JPS64741B2 - - Google Patents

Description

Detailed Description of the Invention Technical Field of the Invention The present invention provides a parallel interface for applying read data as parallel data to a processing device such as a numerical control device, and a serial interface for applying read data as serial data to a processing device. The present invention relates to a tape reader equipped with a tape reader.

Prior Art and Problems Some processing devices such as numerical control devices read data recorded on a tape using a tape reader and perform various processes based on the read data. For example, in the case of a numerical control device, processes such as pulse distribution and tool diameter correction are performed based on data read by a tape reader.

By the way, in processing devices such as numerical control devices, parallel type processing devices cannot process unless the data added from the tape reader is parallel data, and conversely, they cannot process unless the data added from the tape reader is serial data. Since there are serial type processing devices that cannot perform processing, for example, if you want to change the parallel type processing device you are currently using to a serial type processing device, you will also need to change the tape reader from a parallel type to a serial type. need to be replaced,
It was uneconomical.

In order to improve these drawbacks, a tape reader has been proposed that includes a serial interface that outputs read data as serial data and a parallel interface that outputs read data as parallel data. In this way, if one tape reader is provided with a serial interface and a parallel interface, there is no need to replace the tape reader even when using other types of processing equipment. , economical.
However, in the conventional device described above, the operator operates a changeover switch to switch between the serial interface and the parallel interface, so if the operator makes a mistake in operating the changeover switch, the processing unit may malfunction. However, there was a risk that a failure would occur in the processing equipment.

OBJECTS OF THE INVENTION The present invention has been made to improve the above-mentioned drawbacks, and its purpose is to make it possible to select an interface to be used without error. Examples will be described in detail below.

Embodiment of the Invention FIG. 1 is a block diagram of an embodiment of the present invention, in which 1 is a tape reader, 2 is a processing device such as a numerical control device, 3 is a microprocessor, 4 is a memory,
5 is an input section, 6 is an output section, 8 is a tape, 9 is a capstan motor, 10 is a capstan roller, 1
1 is a pinch roller, 12 is a feed magnet,
13 is a brake system, 14 is a brake magnet, 15 is a light emitting section, 16 is a light receiving section, 17 is a parallel-to-serial converter, 18 and 19 are brake magnets when the output signals b and c of the output section 6 are "1", respectively. 1
4. Excitation circuit that excites the feed magnet 12, A1 to A8 are AND gates, IN is an inhibit gate, PIN1 and PIN2 are parallel interface connectors provided on the tape reader 1 side and the processing device 2 side, respectively. , SIN1 is a serial interface connector provided on the tape reader 1 side, l1 to l11 are interface lines connecting parallel interface connectors PIN1 and PIN2, and R is a resistor. Although not shown, male connectors are connected to both ends of the interface wires l1 to l11 if the connectors PIN1 and PIN2 are female connectors.
By inserting it into PIN1 and PIN2, the tape reader 1 and the processing device 2 can be connected. Further, FIG. 2 is a flowchart showing an example of the processing contents of the microprocessor 3, and the operation of FIG. 1 will be explained below with reference to the same figure.

Now, assuming that the processing device 2 is of a parallel type as shown in the figure, when in use, the connector PIN
1 and PIN2 are connected by the interface lines l1 to l11, and the signal d applied to the input section 5 becomes "0". On the other hand, if the processing device 2 is of a serial type, during use, the connector SIN1 and the serial interface connector (not shown) provided on the processing device 2 side are connected to the interface line. Connector for parallel interface
Since PIN1 and PIN2 are not connected,
The signal d applied to the input section 5 is the voltage of the power supply +V,
In other words, it becomes "1".

As shown in the flowchart of FIG. 2, the microprocessor 3 determines whether the signal d is "0" during its processing flow (step S).
1) If the signal d is "0", it is determined that the processing device 2 used is of a parallel type, and a control signal is applied to the output section 6, making the output signal a "1". (Step S2). As a result, the AND gates A1 to A8 are turned on and the inhibit gate IN is turned off, and the perforation information on the tape 8 read by the light receiving section 16 is processed as parallel data via the AND gates A1 to A8 and the connectors PIN1 and PIN2. It will be added to device 2. Next, the microprocessor 3 validates the signals e, f of the signals e, f, g applied to the input section 5,
The signal g is invalidated (step S3), and the process then proceeds to another control step S4. Now, for example, if signal e is a start signal that instructs to feed the tape 8, and signal f is a stop signal that instructs to stop feeding the tape 8, the microprocessor 3 determines that the start signal e is "1".
When it is detected that this has occurred, a control signal is applied to the output section 6, and the output c is set to "1". This results in
The excitation circuit 19 excites the feed magnet 12, and the capstan roller 10 and the pinch roller 11
are pressed together via the tape 8, and the tape 8 is fed. Further, when detecting that the stop signal e becomes "1", the microprocessor 3 applies a control signal to the output section 6 and sets the output signal b to "1". As a result, the excitation circuit 18 excites the brake magnet 14 and the brake shoe 1
3 and the brake magnet 14 come into pressure contact with each other via the tape 8, and the feeding of the tape 8 is stopped.

Also, if the judgment result in step S1 is NO,
That is, connector PIN1 for parallel interface,
If it is determined that PIN2 is not connected and the serial interface connector SIN1 is connected to the serial interface connector (not shown) provided on the processing device 2 side, the microprocessor The setter 3 applies a control signal to the output section 6 and sets the output signal a to "1" (step S
5). As a result, the inhibit gate IN is turned on, the AND gates A1 to A8 are turned off, and the parallel data read by the light receiving section 16 is converted to serial data by the parallel to serial converter 17, and the inhibit gate IN, connectors SIN1 and Interface line (not shown) connecting with the processing device 2
is added to the processing device via. The microprocessor 3 then receives the signals e,
Signals e and f of f and g are made invalid and signal g is made valid (step S6), and the process moves to another control step S4.

That is, the microprocessor 3 determines whether to use the parallel interface or the serial interface depending on whether the parallel interface connectors PIN1 and PIN2 are connected by the interface lines l1 to l11. (step S1), and selects the interface to be used based on the determination result (steps S2, 3, 5, 6).

Effects of the Invention As explained above, the present invention provides a determination means (in the embodiment) for determining whether or not the parallel interface connector provided in the tape reader is connected to the connector on the processing device side. Power +
V, microprocessor 3, etc.) and selection means (in the embodiment, AND gates A1 to A8, inhibit gate IN, etc.), and instead of switching between the parallel interface and the serial interface by the operator operating a changeover switch like in conventional equipment, the tape reader Since it automatically selects whether to use a serial interface or a parallel interface depending on whether the parallel interface connector of the processing device is connected or not, it is possible to use the wrong interface. The advantage is that you can choose without having to worry about it.

[Brief explanation of drawings]

FIG. 1 is a block diagram of an embodiment of the present invention, and FIG.
The figure is a flowchart showing an example of the processing contents of the microprocessor 3. 1 is a tape reader, 2 is a processing device, 3 is a microprocessor, 4 is a memory, 5 is an input section, 6 is an output section, 8 is a tape, 9 is a capstan motor, 1
0 is the capstan roller, 11 is the pinch roller,
12 is a feed magnet, 13 is a brake shoe, 14 is a brake magnet, 15 is a light emitting part,
16 is a light receiving section, 17 is a parallel-to-serial converter, 18, 1
9 is an excitation circuit, A1 to A8 are AND gates, IN
is an inhibit gate, PIN1 and PIN2 are parallel interface connectors, SIN1 is a serial interface connector, and l1 to l11 are interface lines connecting the parallel interface connectors PIN1 and PIN2.

Claims (1)

[Claims] 1. In a tape reader equipped with a parallel interface that transfers perforation information of a read tape to a processing device as parallel data and a serial interface that transfers perforation information of a read tape to a processing device as serial data, the parallel determining means for determining whether or not an interface connector and the processing device are connected; and selecting and using either the parallel interface or the serial interface based on the determination result of the determining means. A tape reader characterized in that it is equipped with a selection means for selecting.