JPH0256603A - Program controller - Google Patents

Abstract

PURPOSE:To obtain the generality corresponding to more manufacturing processes by providing a process name code registering part being conscious of an actual manufacturing process, and a digital converting part of a process name code outputted from said registering part, and outputting the process name code by a BCD code or binary data. CONSTITUTION:According to a conventional program controller, ON or OFF of a time signal is designated and a digital signal for operating directly a sequencer or an external apparatus is outputted, but in case of this program controller, a process name code is registered in a registering part 8 and a name code by a BCD code or binary data is outputted from a digital output part 2 through a converting part 9. In such a way, in the inside of the program controller, the process name code being unconscious of the sequence can be registered, and also, by bringing the process name code to digital output by the BCD code or the binary data, a synchronizing signal with the sequencer can be increased more than before by a space of the same digital part as before, and it is possible to correspond to more manufacturing processes.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a program controller that synchronizes with a sequencer in sequence control in product manufacturing.

[Conventional technology]

Conventionally, a synchronization method using a time signal is known as a method for synchronizing a program controller with a sequencer.

An example of this is shown in FIGS. 3 and 4. The manufacturing process that is controlled in advance by a sequencer is set as a program pattern 11 in the program pattern storage section 1 (the case shown is for temperature control of a furnace or other parts). , After making the program pattern 11 correspond to the time signals 1 to 8, ON or OFF is registered for each segment 12 to 15 of the program pattern 11 for controlling the temperature controller for each time signal. . 7 in FIG. 3 is a time signal registration section for performing this registration. The number of time signals is determined by the size of the temperature controller, and the ON/OFF status of each time signal corresponds to the ON/OFF status of the output terminal on the temperature controller side.

The program controller side has an individual digital output section 2 for each time signal, and outputs a synchronization signal to the sequencer from the digital output section 2 according to the time signal registered in the time signal registration section 7, Performs process control (sequence control).

In the figure, 3 is a measured value input section, 4 is an input processing section, and 5 is a PID
In the control calculation section, 6 is a control output.

[Problem to be solved by the invention]

However, in the conventional system shown in FIGS. 3 and 4, the number of digital output sections, that is, the number of time signals, is limited by the space (number of output terminals) of the digital output section 2.

In addition, in the case of time signals, the ON or OFF signal that directly operates the sequencer or external equipment is specified as is, so there is a drawback that the operator must be aware of the correspondence between the time signal and the manufacturing process in advance.

An object of the present invention is to eliminate the disadvantages of the conventional example, to increase the number of synchronizing signal points for the sequencer in the same digital output section space as the conventional example, and as a result, to provide a program controller that can accommodate more manufacturing processes. It is about providing.

[Means for Solving the Problems] In order to achieve the above object, the present invention includes a process name code registration section that takes into account the actual manufacturing process, and a digital conversion section for the process name code output from this registration section. , the gist is to output the process name code as a BCD code or binary data.

[Effect]

According to the present invention, by incorporating a process name code that takes into account the actual manufacturing process into the synchronization signal designation method for the sequencer inside the program controller, it is possible to eliminate the need to be aware of the sequence inside the program controller, and furthermore, digital output By making the synchronization signal output from the section a BCD code or a process name code output using binary data, it becomes possible to output synchronization signals corresponding to more manufacturing processes than before in the same digital output section space as before. Moreover, the synchronization signal output can also be performed as a data transmission output.

〔Example〕

Embodiments of the present invention will be described in detail below with reference to the drawings.

Fig. 1 is a block circuit diagram showing one embodiment of the program adjustment needle of the present invention, and Fig. 2 is a diagram related to the program pattern synchronization signal of the above, which has the same components as Figs. 3 and 4 showing the conventional example. are given the same reference numerals.

The program controller of the present invention replaces the time signal registration section 7 of the conventional program controller with a process name code registration section 8 and a process name code digital conversion section 9. The process name code registration section 8 is for registering process codes corresponding to various manufacturing processes for each segment 12 to 15 of the program pattern 11, as shown in FIG. Also,
The digital converter 9 outputs the process name code as a BCD code or binary data.

In this way, the present invention converts a conventional programmable controller that outputs a digital signal that can directly operate a sequencer or an external device by specifying ON or OFF of a time signal to a process name code in the registration section 8. The name code is registered and is output from the digital output section 2 via the conversion section 9 as a BCD code or a name code in binary data.

As a result, it is now possible to register a process name code inside the program controller without being aware of the sequence.Furthermore, by digitally outputting the process name code as a BCD code or binary data, it can be used with a sequencer in the same digital space as before. The advantage is that the number of synchronization signals can be increased compared to the conventional method.

Furthermore, data transmission output l from the process name code registration section 8
By obtaining O, it is also possible to transmit a synchronization signal output.

〔Effect of the invention〕

As described above, the program controller of the present invention can increase the number of synchronization signal points for the sequencer with the same digital output section space as the conventional one, making it highly versatile and compatible with more manufacturing processes. It is something that can be done.

[Brief explanation of the drawing]

FIG. 1 shows an embodiment of the program controller of the present invention.
FIG. 2 is a block circuit diagram related to the program pattern synchronization signal as described above, FIG. 3 is a block circuit diagram showing a conventional example, and FIG. 4 is a diagram related to the program pattern synchronization signal as described above. l...Program pattern storage section 2...Digital output section 3...Measurement value input section 4...Input processing section 5...P ■D control calculation section 6...Control output section... Time signal registration section Fig. 8... Process name code registration section 9... Process name code digital conversion section 10... Data transmission output 11... Program patterns 12 to 15... Segment

Claims (1)

[Claims] It is characterized by providing a process name code registration section that takes into consideration the actual manufacturing process and a digital conversion section for the process name code output from this registration section, and outputting the process name code as a BCD code or binary data. Program controller.