JPH0228190B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is connected to a host machine (host computer) in a communicable manner, and prior to data input/output, a program stored in the host machine is loaded. A data input/output terminal is a type of data input/output terminal that inputs and outputs data according to a program, and is particularly used for inventory management, loading/unloading management, etc., and is a so-called portable data terminal device (hereinafter referred to as a terminal device). ).

[Prior Art] Conventionally, this type of terminal device has been put into practical use in various industries.

By the way, the conventional terminal device is a special machine that is adapted to each industry, creates a special program suitable for the business practices of the industry, and stores the special program in the ROM area or RAM area. was offered to the market.

Therefore, in the past, dedicated programs had to be created for each type of industry, such as transportation or wholesale, or even for each type of business, such as shipping or receiving, within the same industry. Because terminals can only be used with special programs, different terminals must be prepared for each job even in the same industry, which not only increases the number of terminals, but also poses a risk of misuse, complicating management, and inefficient use. It was hot.

In view of this problem, the present applicant has developed a data input/output terminal that can be configured for each industry and that can communicate with a host machine for data input/output across multiple tasks. A data input/output terminal connected to a host machine, which includes at least a mode setting means for specifying a program setting mode and an execution mode, and a program terminal for storing a program supplied by a host machine.
RAM means, means for creating multiple types of business programs by setting various parameters for the stored program in the program setting mode, parameter RAM means for storing the set parameters in memory, and memory for storing data. A data input/output terminal similar to that of the present application is provided with at least a data RAM means for configuring the program and a business specifying means for specifying one of a plurality of types of business programs in the execution mode. It is proposed in a patent application dated .

[Object of the Invention] The present invention provides that in the data input/output terminal of the above type, parameters used to create a plurality of business programs in the program setting mode are stored in the RAM. If this happens due to some reason such as noise or incorrect operation, the device will malfunction and, in extreme cases, will run out of control.

An object of the present invention is to discover such parameter variations and prevent malfunctions.

[Structure of the Invention] In order to achieve the above object, the present invention provides a data input/output terminal device that is communicably connected to a host machine HM, as shown in the overall update diagram in FIG.
Mode setting means A that is EOST and specifies at least a program setting mode and an execution mode
, a program RAM means B for storing programs supplied by the host machine, and parameter setting for setting parameters necessary for executing a plurality of types of tasks for each of the stored programs in the program setting mode. Means C
, a parameter RAM means D for storing the parameters set by the parameter setting means C, a data RAM means E for storing the data, and a check value RAM means for storing the check code.
When the switch for turning off the power is turned on after setting the parameters by the RAM means F and the parameter setting means C,
A control means G calculates a check code for the parameters stored in the RAM means D, updates the check code stored in the check value RAM means F with the calculated check code, and then turns off the power. and a task specifying means H for specifying one of a plurality of types of tasks in the execution mode.
When a job is specified by the job specifying means H, the program is executed based on the parameters set by the parameter setting means C corresponding to the job, and the data stored in the data RAM means is read. Execution means for processing and performing predetermined tasks, and RAM for the above-mentioned check value when the power is turned on, before the execution means executes the program.
The present invention provides a data input/output terminal characterized in that it is equipped with a determining means J that performs an error check using a check code stored by the means F.

[Effects of the Invention] According to the present invention, since it is possible to check for garbled parameters for setting a plurality of programs before executing the execution mode, it is possible to prevent equipment malfunctions, and to always Correct execution of business programs can be ensured.

[Example] Examples of the present invention will be described in detail below.

<System configuration> Figure 2 shows the system configuration diagram of this device, and Figure 3 shows the system configuration diagram of this device.
The figure shows a front view of the device.

As shown in FIG. 2, this device includes a central processing unit 1 (hereinafter abbreviated as CPU 1) consisting of a one-chip microprocessor, and a read-only memory 2 for initial program loading.
(hereinafter abbreviated as IPL ROM 2), program random access memory 3 (hereinafter abbreviated as program RAM 3), and random access memory 4 for input data and system parameter data (hereinafter abbreviated as program RAM 3). , data RAM4
It is abbreviated as ), a keyboard 5 equipped with various function keys and a numeric keypad used for parameter setting, data entry, etc., which will be described in detail below.
A switch means 10 consisting of a power switch 6, first and second system switches 7, 8, and a mode switch 9, which will be explained below, a liquid crystal display 11 for performing various necessary displays, and various interfaces (I). /F), specifically a serial I/F 12, a parallel I/F 13, a pen I/F 14 for reading barcodes, a buzzer 15 and an earphone connector 16 as standard equipment.

As an option, a program RAM 17 and a barcode pen reader 18 (hereinafter abbreviated as TPR 18) can be provided.

Further, the CPU 1 is connected to a host machine (host computer) 19 or other data terminal device 20 via a serial interface (I/F) 12 or a parallel interface (I/F) 13.

As shown in FIG. 3, the keyboard 5 has a "0"
~ 10 numeric keys for “9” - NK (i) (i = 0 ~
9) and 20 function keys FK (j) (j
= 1 to 20), and the mode switch 9 has mode A and mode B.
It is configured as a slide switch that selects one of the following.

The program RAM 3 and data RAM 4 are backed up by a built-in battery (not shown), and as shown in FIG.
are arranged as switches that can be switched in three positions A, B, and C in the battery storage section 21, respectively. These first and second system switches 7 and 8, as described below, are selection switches used in combination with the mode switch 9 to specify various modes, etc., and are operated by the user. There's no need.

<Operation Flow (Overall)> FIGS. 5 and 6 show the operation flow executed by the CPU 1.

As shown in FIG. 5, when the power switch 6 is turned on, first a check is made to see if the program exists and whether it is normal in order to execute the program, and then a battery check is performed. If not, a mode determination is made.

As mentioned above, the settings for this mode are as follows:
This is done by a combination of second system switches 7, 8 and mode switch 9.

The modes that can be set are roughly divided into the following five types.

(a) Sum check mode A mode in which the checksum code of the program section and parameter section of the RAM area is calculated and set in a predetermined memory area.

(b) Diagnosis mode Run the ROM area diagnostic program and
A mode for testing hardware such as ROM, RAM, LCD display, keys, buzzer, etc.

(c) Application mode This mode is further divided into parameter setting mode and execution mode.

(c)-1 Parameter setting mode Various business specifications such as data entry business (up to 7 types), data output business (1 type), master data input business (1 type), data collector business (1 type...optional), etc. can be set as parameters. Mode set by settings.

(c)-2 Execution mode A mode in which various tasks are executed by each operation of initial setting, initial registration, and task selection (data entry task classification, data output task, etc.).

(d) Program load mode A mode for loading the program area and parameter setting area.

This mode is further divided into a mode in which the program is loaded from the host machine and a mode in which the program is loaded from another data terminal.

(e) Program unload mode A mode for unloading the contents of the program area and parameter setting area (outputting the contents in order to transfer them to another terminal).

Table 1 shows the designation methods for various modes.

<Program setting mode> This mode is the most distinctive feature of this device, and various business programs are created by setting the following parameters. In other words, in conventional data terminals of this type, a single type of business program was pre-installed as a unique program for each industry, but this device can be used for each industry according to the industry. This is a general-purpose machine that can set the optimal business program while taking into account the user's requests.

(1) Key arrangement in setting mode Figure 7 shows the key arrangement in setting mode. This key arrangement is fixed.

(2) Setting operation in setting mode All settings are performed using the key sequence shown in FIG.

In Figure 8, NK1 is the job number JOB
# (for example, 4 digits), NK2 indicates the item number item # (for example, 2 digits), and NK3 indicates a key operation for specifying parameter setting data (various depending on the parameter to be set).

When the function key FK1 is pressed for the first time, the operation shifts to NK2, and when it is pressed for the second time, the setting contents of the corresponding JOB# are displayed. Each time the function key FK2 is pressed, it is automatically updated to the next item # or the next JOB #. Function key FK3 displays the setting contents of the next JOB# when pressed. When checking settings, press and hold FK3 one after another.

(3) Data format of data registration memory FIG. 9 shows the format of the data registration memory during data entry in execution mode.

The initial registration record and business classification record are fixed for each delivery system. The heading, date, and footing records are fixed for each job of each data entry selected for the job. Initial registration, business classification, heading, and footing records may not exist.

Each record other than business classification is composed of a plurality of items as shown in FIG.

(4) Parameter settings for each record of hetting, date ailment, and footing Hetting is the storage of data such as the total of each quantity in terms of quantities, the total of amounts in terms of amounts, or the year, month, day, hour, and minute of input or output. This section is for setting parameters.
For example, it can be performed for JOB #0101 to 0114 and items #10 to 14.

Table 2 shows the setting method.

Further, the date information is a part that shows details such as, for example, the unit price and quantity of each product. The setting method is shown in Table 3-1 and Table 3-2.

The footing record is a record located next to the last date record, and is used for closing purposes, such as storing the total amount of money in the date record. The setting method is shown in Table 4.

Hereinafter, specific setting methods will be explained according to Tables 2 to 4.

[Item #10] Specifying various information for items (a) Item length Specify the required length (digit length) for each item. However, it includes C/D check code, symbols such as decimal point ".", sign "±", and item classification code. The digit length specified here is allocated to the data registration memory.

(b) Display area Specify the number of lines, digits, and digit length for the area where the input contents are displayed when monitoring the numeric keypad input or when inputting the barcode reader TPR.

(c) Item delimiter code When storing each input item in the data registration memory, specify whether or not to store a code representing the delimiter of each item. When storing, specify the code (1 digit). Note that the code specifications are different for 4BIT and 8BIT.

(d) Input end key When inputting using the numeric keypad, specify the key that indicates the end of inputting an item using a key code. When the key specified here is input, it is assumed that the input of the corresponding item is completed.

(e) Calendar function The system has two calendar functions: writing (initial registration items only) and reading (heading and date-ail items only). “Yes” or “No” can be specified for these functions.

If "Yes" is specified, specify only one of the following contents: "Year, Month, Day", "Hour, Minute", "Year, Month, Day, Day of the Week, Hour, Minute".

(f) Specify whether TPR input is possible. Since numeric keypad input is always possible for any item, multiple input with the numeric keypad is required for items designated as allowing TPR input.

[Item #11] Specification of various check methods (a) Month/day check, etc. For checking "month/day", "hour/minute", "month/Sunday/hour/minute", for example, 00≦hour≦2300≦minute≦59, etc. Perform a check.

(b) Range check This range check, for example, checks whether the input amount is within the range from the lower limit to the upper limit.For example, 10 range tables are available for combinations of the upper and lower limits. It can be specified from (01 to 10). For one item, if there is no other check specification (for example, month/day check, etc.), multiple types and up to 5 types of checks can be performed for one item. In that case, it is performed by "OR" for each type. . Check only significant figures, sign,
Ignore the decimal point.

Table 5 shows the above range table.

(c) Check digit [C/D] check This is a C/D check for input items. C/D checks can be performed by adding other items to the beginning of input items.

FIG. 11 shows a weight assignment method when n ₁ , n ₂ , n ₃ , n ₄ , and n ₅ are specified as weights.

Furthermore, up to six types of C/D check contents can be specified from the C/D table shown in Table 6.

The parameters to be set include the number of the C/D table, whether or not to add other items, and, if added, the item number.

(d) Comparison check with initial setting memory The input data is compared with the data stored in the initial setting memory.

As a result of the comparison, if a match is found, the input data is processed, and if it is not a match, an error occurs.

(e) Total check This is an equality check between the input data values of the heading and date items and the totalizer (for addition) [explained later] provided in the system. An example of this is shown in FIG. 12.

This summation check can be used for heading and date records. Here, specify one of the system totalizer numbers (01 to 04).

The system totalizer value (total value) that was calculated is cleared when this check is completed. The system totalizer will be described in detail in the section "(c) Use of the system totalizer" below.

(f) Master data search check This check is possible for heading and date-ail input items, and the processing when this check is specified in the input item is as follows.

Note that FIG. 13 shows the configuration of the master aisle.

(f-1) Specifications when searching and checking master data include specifying key data in the input data and specifying the format of the master registration memory.

(f-2) Search from the beginning of the date record group in the master registration memory using the specified input data key.

(b) It is possible to specify whether to cause an error or to ignore the data when it is not in the master registration memory.

●When an error occurs, a high-pitched long buzzer sounds. The long buzzer will be turned off by pressing the CE key among the function keys, and this item will be entered again.

●When ignored After processing the input data, move on to input the next item.

(b) When it is in the master registration memory MAX10 of each item of master data
The items are displayed on the liquid crystal display 11.
The displayed contents are referred to when inputting date items.

●Specifying the display area for each item of master data (performed for each data entry) Specify the line, column, and column length to be displayed for each item. When the line specification is set to "0", that item is not displayed.

The position and length of each item of master data and the edit type for display are specified as follows:
They are shown in Tables 9 and 10, respectively.

In Table 10, the edit specifications for display are as follows.

"0"...No editing → Display the image in memory as is.

“1”…Suppress leading zeros and display only the significant numbers in memory.

"2"...Display with leading zeros suppressed to the first decimal place.

“3”……Display with leading zeros suppressed to the second decimal place.

Note that the contents of the displayed master data are deleted when the input of the final item of the heading and date record is completed.

For this master data search check,
This section will be explained again later in <Master File Function>.

(g) Data registered check This check is possible only for date input items, and the processing when this check is specified in an input item is as follows.

Similar to the memory search function of the date record, edit the input data (positive integer) in the same way as the memory format, and use this as a key to search from the beginning of the same date record group that is currently being input in the data registration memory. search for.

(b) When the information has already been entered: Displays the contents of the searched date record and sounds a high-pitched buzzer. The display is the same as the date email input screen currently being entered.
Editing during display is performed as follows.

* Fixed digit items are displayed as images in memory.

* Variable digit items are displayed with leading zeros suppressed. (If there is a decimal part, "." is also displayed.) The subsequent processing is as follows.

* When the key to delete is entered, the buzzer and displayed contents are erased, and the entire searched date record in the data registration memory is filled with the specified special code (same as the memory clear code when deleting memory search). , This item will be entered again.

* When a key not to be deleted is entered, the buzzer and displayed content will be turned off and the item will be entered again. It is possible to specify a key for deleting or not deleting the searched date record on the data registration memory.

(b) When the input data has not been completed After processing the input data, move on to input the next item.

[Item #12] Memory editing method, etc. The specification method for memory editing methods differs depending on the type of heading, date-ailing, and footing, but here we will mainly explain the memory editing method for date-ail records shown in Table 3. .

(a) Memory editing method (1) “00” to “02” Decimal point reference and number of decimal digits Specify the position of the decimal point in the memory (0 to 2 digits; if “0” is specified, there is no decimal point). With this specification, input data is edited based on the specified decimal point position. In this case, the overflow is cut and the shortfall is filled with zeros. If there is no decimal point, edit with the right end as the decimal point. Whether or not to memorize the decimal point position is
Depends on system parameter settings.

(2) Delete the last digit of “10” Delete the last digit (C/D value) of the input data and store it right-aligned. Cut the overflow and fill in the shortage with zero.

(3) “2n” C/D addition Add the C/D value after the last digit of the input data and store it right-aligned. That is, "n" designates the item number of the C/D table (n: 1 to 6). In this case as well, the overflow is cut and the shortage is filled with zeros.

(b) Addition of other items (data synthesis) Addition of other items is a type of data synthesis, and includes other items (heading or date ailment).
Synthesize with the input data of

In this case, specify the other item addition code "30" in the memory editing method of (a), and then specify the item number of the other item to be added in (b).

(c) System - Use of totalizers This system provides a total of four totalizers (14 digits for the integer part and 2 digits for the decimal part), which can be used in the following ways.

* Save input data.

* Add input data.

* Read the system totalizer data.

* Check the input data and system totalizer value for equality.

* Check the values of system totalizers for equality.

By combining these usage methods with input items, settings can be made, for example, as shown in Table 11 below.

Usable range (1) Use in heading or date record As shown in Figure 16a, the total is a numeric key input item, and the input value is the sum of items 1 to n. An equality check is performed between the input value and the total value (added to the system totalizer when inputting items 1 to n) (see the section on total check). In addition,
At this time, it is not possible to input total items from the system totalizer without inputting them using the numeric keys.

(2) Use in date record and footing record As shown in Figure 16b, when inputting the total of the input items of the date record in the footing record item, the total numeric key input value and The total value (added to the system totalizer when inputting item n) is checked for equality. It is also possible to input the total from the system totalizer without using the numeric keypad.

(3) Use in heading records, date-ail records, and footing records As shown in Figure 16c, enter the total value of the date-ail record input items in the heading record input items. (Save it in the system totalizer when inputting the total n),
When entering the footing record, perform an equality check with the total value of the input items of the date record (when inputting item n, add it to a system totalizer separate from the one for saving) and the input value of heading. .

[Item #13] Designation of key input method For date record, four types of key input methods can be set. There is only one type of hedging and footing.

(a) Specifying the total number of digits However, the total number of digits here is the number of significant figures,
Does not include the decimal point “.” or sign.

(b) Number of decimal places Maximum of 2 digits, if there is no decimal part, specify “00”.

(c) Input mode "0"...The number of digits is fixed and only positive integers can be entered.

“-” and “.” cannot be entered.

"1"...Positive integers with various numbers of digits can be entered.

“-” and “.” cannot be entered.

“2” You can input positive and negative integers with various numbers of digits, but you cannot input numbers with a decimal point “.”.

"3"...Positive real numbers of various numbers of digits can be input, but "-" cannot be input.

"4"...Positive and negative real numbers of various numbers of digits can be input.

(d) Omission of number on the numeric keypad Whether or not the number on the numeric keypad can be omitted, and if it can be omitted, whether it is considered to be an input of “0”.
Specify whether to consider it as an input of “1”. If omitting the number is specified, only the end key can be input (described in detail later).

(e) Input editing (a) Right-justify input data “00” Align the input data to the right, and fill in the missing number of input digits with zeros in front.

(b) Left-justification of input data The input data is left-justified, and the missing part is later filled in with filler code (HEX) (“0” to “9”).
Fill in one digit).

(c) Replacement start digit during data synthesis First, data synthesis will be explained. When composing the data described above, specify the replacement start digit. Figure 14 shows an example of data compositing for input item 2. As shown in Figure 14, in input item 2, the classification code is entered in the top three digits and the product code is entered in the bottom five digits.
If a 5-digit number corresponding to a product code is input, this product code is combined with the previous classification code. In this case, the first digit P to be replaced with the current data (product code) is specified in the key input method of [Item #11] described below.

The data (classification code and product code) synthesized in this way is input to input item "2" of the current record.

Such data composition has the effect of making it possible to extremely simplify input operations for data that have some common data.

FIG. 15 shows a data synthesis flow during data entry in execution mode.

When data entry for one record is started using the numeric keypad or TPR, the input data is displayed on the display, and in step 101 it is determined whether or not to combine it with the previous input data. , and other edits specified in step 102 are performed. If "YES", synthesis and editing with the previous input data is performed in step 103. This synthesis method is as described above.

Then, the data after input editing is sent to step 104.
is displayed, allowing you to check the composite data.

Further, as described below, various checks are performed at step 105, and if the checks are cleared, memory editing is performed at step 106, and the data is saved in the write buffer. This operation is repeated until it is determined in step 107 that data entry up to the last item has been made. After inputting one record, the input data is set in the data memory in step 108, and data entry for the next record is performed. Transition.

Note that when the above (b) or (c) is specified, the edited data is displayed again in the monitoring area after the input using the numeric keypad is completed.

In addition, various checks regarding input data can be done by
Perform this on the data after editing the input data.

[Item #14, 15] Specify TPR method If you want to complete the input with one scan, specify the input method in item #14. If you want to complete the input with multiple scans, specify the input method in item #15.

The specification is basically made by specifying the number (JOB#) in the TPR input table (Table 12) below.

Specifically, with reference to Table 12, the number of digits to be read, the starting digit position of valid data, the effective data length, the presence or absence of a classification code, the classification code if it is present, and the type of barcode (NW-7, JAN (8.13 digits), 2out
of5, iNTERLEAVED2out of5), check digit table number, decimal value of "-", "+", ".", etc.

For multiple scans, specify the input end condition.

The input end conditions are: * TPR other than the specified number of read digits and classification
When an input is received or a key is input.

*0 to 9, when a TPR input other than "." is received ("-" is regarded as negative data, others are regarded as positive data).

<C/D calculation method for data including symbols such as decimal points> To prevent barcode reading errors,
A check digit (C/D) check is performed on the read data. Similarly, when inputting data using the numeric keypad, a C/D check is performed to prevent numeric input errors. However, C/D
Normally, calculations can only handle integers. However, if the decimal point in the data includes + or - symbols, C/D calculation cannot be performed as is. Therefore, in advance, for the decimal point and + and - signs, 0 to 99
When performing C/D calculation after setting the number of
This allows calculations to be made using the set numbers instead of symbols. By doing this,
It is possible to calculate C/D for data including symbols other than numbers.

The designation method in this case is shown in item #“03” on the TPR input table shown in Table 12.

In this item # “03”, in addition to specifying the barcode type and C/D type mentioned above, the “-” symbol,
Assign any two-digit value from 00 to 99 to the "+" symbol and the decimal point symbol ".". In other words,
Convert these symbols to appropriate numerical values. By doing this, for all real numbers including plus and minus signed integers and decimal points,
A C/D check can now be executed.

A detailed description will now be given of the C/D check operation flow shown in FIG.

In step 101, from TPR, for example, “-
1234.67” is input, step 1 determines whether or not to perform a C/D check for this input item.
If it is determined in step 02 and a C/D check is to be performed, in step 103, set "-" and "." to the specified decimal value, such as "11" and "31".
Replace with

Therefore, the C/D calculation in step 104 is performed for "1112343167", and the calculation result and the C/D equal check are performed in step 10.
It will be held in 6. If they are not equal, an error will be displayed.

In the above example, “+”, “-” and decimal point “.”
Although a case has been described in which the symbols include "¥", for example, the above concept can be extended to other symbols such as "¥" representing Japanese yen.

<Setting data error check> In order to execute multiple types of business programs from one program, that is, multiple types of application specifications, this device sets various parameters and operates the program according to the set parameters. Its basic feature is that it allows Therefore, if the set parameters change due to some reason such as noise or malfunction, malfunction will naturally occur, and in extreme cases, the device will go out of control.
Therefore, the parameters are required to have the same reliability as the program.

By the way, in the past, a check such as a sum check has been performed on the program section, but no check has been performed on the parameter section.

From this point of view, the present invention prevents equipment malfunctions by checking the parameter section in the same way as the program section.

This checking method of the parameter section is characteristically shown in FIG.

In the program routine, various parameters are set in sequence, and when the settings are completed, the power switch is normally turned off, assuming that the program setting mode has been completed.

This power switch OFF operation (you may also turn on the parameter setting end key) will trigger the
P-OFF routine POR is executed.

In this POR, a check code such as a check sum code is calculated for the parameter section in which the set parameters are stored, and is set in a predetermined memory area.

When the power switch is turned on to execute the business program set by the parameter settings, as shown in Figure 5, it is first determined whether the program is loaded or not, and then the next step is started. A thumb check is held.

In this thumb check, a thumb check is performed for both the program and the aforementioned parameters. Therefore, if not only the program but also the parameter section is corrupted for some reason, a thumb check error will be displayed and the execution of the program will be stopped. In this case, in the parameter setting mode,
Regarding the setting parameters, necessary checks can be performed, for example, the stored setting parameters can be sequentially displayed and compared with the setting data table.

In this way, it is possible to check not only the program section but also the parameter section, so that garbled setting parameters can be discovered before they occur, making it possible to always execute the correct business program.

[Brief explanation of drawings]

FIG. 1 is a configuration explanatory diagram of the present invention, FIG. 2 is a system configuration diagram of a data terminal machine according to an embodiment of the present invention, and FIG. 3 is a front view of the data terminal machine.
FIG. 4 is a perspective view of the main parts of the system switch, FIGS. 5 and 6 are flowcharts showing the overall flow of the system, FIG. 7 is an explanatory diagram showing the key arrangement in program setting mode, and FIG. 8 is a diagram showing a key sequence when setting parameters, FIG. 9 is a diagram explaining the structure of entry data, FIG. 10 is a diagram explaining the structure of a record, and FIG. 11 is a diagram explaining a method of assigning check weights. Fig. 12 is an explanatory diagram showing the equal check method by the system totalizer, Fig. 13 is an explanatory diagram showing the configuration of the master file, Fig. 14 is an explanatory diagram showing the data synthesis method, and Fig. 15 is an explanatory diagram of the data synthesis method. Flowchart showing the operation flow of the method, No. 16
Figures a, b, and c are explanatory diagrams showing how the system totalizer is used, respectively, and Fig. 17 is a flowchart showing the C/D check method including symbols. HM...Host machine, EOST...Data input/output terminal, A...Mode setting means, B...RAM means for program, C...Parameter setting means, D...RAM means for parameters, E...Data RAM means for F... Check value RAM means,
G: Control means, H: Business specification means, I: Execution means, J: Judgment means.

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Claims (1)

[Scope of Claims] 1. A data input/output terminal communicably connected to a host machine, which comprises mode setting means for specifying at least a program setting mode and an execution mode, and is supplied by the host machine. a program RAM means for storing a program; a parameter setting means for setting parameters necessary for executing each of the plurality of tasks for the stored program in the program setting mode; RAM means for parameters to memorize the parameters set, RAM means for data to memorize the data, and check value RAM means to memorize the check code.
RAM means; When a switch for turning off the power is turned on after setting parameters by the parameter setting means, a check code of the parameter stored by the parameter RAM means is calculated, control means for turning off the power after updating the check code stored in the check value RAM means with the check code; a job specifying means for specifying one of a plurality of types of jobs in the execution mode; When a task is specified by the means, the program is executed based on the parameters set by the parameter setting means corresponding to the task, and the data stored in the data RAM means is processed to perform a predetermined process. The present invention is characterized by comprising an execution means for carrying out a task, and a judgment means for performing an error check using a check code stored in the check value RAM means when the power is turned on and before the execution means executes the program. Terminal for data input/output.