JPH03166603A - Programmable controller - Google Patents

Abstract

PURPOSE:To prevent an end code from being printed in the case a printer is connected as an external apparatus by selecting freely whether the end code given to the end of serial data is outputted or not by a control signal inputted to a data output part from a control part. CONSTITUTION:When printing data Dp comes, a data output part 2 inputs the printing contents 'A' to 'I' to the end code 'CR'. Subsequently, whether a control signal Vc comes or not is checked, and in the case the control signal Vc does not come, the printing data Dp to which the end code 'CR' is given is outputted as it is. On the other hand, in the case the control signal Vc comes, printing data Dp' having no end code 'CR' is outputted. In such a way, when the printing data Dp' having no end code 'CR' is outputted from the data output part 2 by the control signal Vc, even in the case a printer 3 in which all the data that are sent are printing objects is connected, it does not occur that the end code 'CR' is printed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a programmable controller that sequentially controls a plurality of loads based on a preset sequence program.

[Prior Art] Conventionally, this type of programmable controller that sequentially controls a plurality of loads based on a preset sequence program has a control section that sequentially controls a plurality of loads based on a sequence program, and a control section that sequentially controls a plurality of loads based on a sequence program. Some devices are equipped with a data output unit that outputs the output serial data to an external device including a printer. For example, there is a device that sends print data output from the control unit 1 to the printer via the data output unit 2 and prints it. I was supposed to do it. [Problems to be Solved by the Invention] However, in the above-mentioned conventional example, the serial data output from the control unit 1 via the data output unit 2 is
The format is as shown in Figure 2, and an end code "CR" is given at the end of each data, so there was a problem that this end code "CR" would be printed. In other words, in the serial transmission of one-meter data, an end code rCR is assigned, and since the printer is designed to print all the data sent, the end code "CR" is assigned. ” was also included in the printout, which caused the problem that unnecessary printing was performed. The present invention has been made in view of the above points, and its purpose is to provide a programmable controller that can prevent end codes from being printed when a printer is connected as an external device. It is in.

[Means for Solving the Problems] The programmable controller of the present invention includes a control section that sequentially controls a plurality of loads based on a preset sequence program, and an external device including a printer that transmits serial data output from the control section. In a programmable controller equipped with a data output section that outputs data to
The control signal input from the control section to the data output section causes
It is possible to freely select whether or not to output the end code given at the end of serial data. [Function] The present invention is configured as described above, and in a programmable controller that sequentially controls a plurality of loads based on a preset sequence program, a control signal input from the control section to the data output section, This allows you to freely select whether or not to output the end code given at the end of the serial data.If you connect a printer as an external device and do not output the end code, the end code will be printed. Never.

[Embodiment] Fig. 1 shows an embodiment of the present invention, which includes a control section 1 consisting of a CPU that sequentially controls a plurality of loads based on a preset sequence program, and a serial number output from the control section 1. In a programmable controller equipped with a data output section 2 that outputs data Dp to an external device including a printer 3, from the control section 1 to the data output section 2
Serial data DP
of! It is possible to freely select whether or not to output the end code rcRJ given after &.

The operation of the embodiment will be described below. Figure 3 shows print data D consisting of serial data output from the control unit 1.
This is a flowchart showing the operation when outputting p to the printer 3 via the data output unit 2. Now, in the data output unit 2, as shown in FIG.
It is constantly checked whether print data Dp consisting of serial data to which cRJ has been added has arrived, and when print data DP has arrived, the print contents r A J to rlJ up to end code rcFLJ are taken in. Next, the control signal V
If the control signal Vc is not received, the print data Dp with the end code "CR" is output as is. On the other hand, the control signal V
If c has arrived, print data DP' without end code rCRJ is output. Therefore, the control signal Vc
Print data DP' without end code "CR"
If this is outputted from the data output section 2, the end code rcRJ will not be printed even if a printer 3 that prints all the sent data is connected.

〔Effect of the invention〕

The present invention is configured as described above, and in a programmable controller that sequentially controls a plurality of loads based on a preset sequence program, the end of serial data is This allows you to freely select whether or not to output the end code assigned to the printer.If you connect a printer as an external device, if you do not output the end code, the end code will not be printed. There is an effect.

[Brief explanation of the drawing]

FIG. 1 is a block circuit diagram of an embodiment of the present invention, and FIGS. 2 and 3 are diagrams illustrating the operation of the same. 1 is a control unit, 2 is a data output unit, and 3 is a printer.

Claims (1)

[Claims] (1) In a programmable controller equipped with a control unit that sequentially controls multiple loads based on a preset sequence program and a data output unit that outputs serial data output from the control unit to external equipment including a printer. A programmable controller characterized in that it is possible to freely select whether or not to output an end code given at the end of serial data by a control signal input from a control section to a data output section.