Mitsubishi-electric QJ71C24N Manuel d'utilisateur télécharger pdf (Page 304)

App. - 10 App. - 10

MELSEC-Q

APPENDIX

Appendix 2.3 Using Programs Designed for the Computer Link Module and Installing the Q

Series C24 into Existing Systems

This section describes how to use programs created for A series computer link

modules and installing the Q series C24 into an existing system.

POINT

When using the Q series C24, make sure to set the operation mode, station

number, and transmission specifications with the following parameter setting

screen of GX Developer.

• "Intelligent function module switch setting" screen

The Q series C24 does not have the setting switches to set the operation mode,

station number, and transmission specification that are available in the computer

link module for A series.

Appendix 2.3.1 Using programs designed for the computer link module

The data communication between the PLC CPU and external device as well as other

PLC CPU that has been performed by A series computer link modules (hereinafter

abbreviated as UC24/C24-S8) can also be performed using the Q series C24.

However, UC24/C24-S8 and the Q series C24 have major differences in the following

points.

For PLC CPU side, create a new program according to the explanation in the section

of the function used.

(Differences between UC24/C24-S8 and the Q series C24)

• Initial setting items and the setting method of addresses and special application

areas of the buffer memory

• Input/output signals for handshake

• Dedicated instructions of the PLC CPU

(1) Initial settings for special application area in buffer memory

1) In the Q series C24 the addresses for special application areas in the buffer

memory are different from those of UC24/C24-S8. The Q series C24 has

more initial setting items.

The setting method is different such that the settings are performed using the

utility package (GX Configurator-SC).

2) Register necessary initial setting values according to Chapter 8.

3) The default value for the CD terminal check setting is changed to "No check".

(2) Data communication using the MC protocol (identical to the

communication functions of the dedicated protocol of UC24/C24-S8)

(a) Communication protocol setting

Data communication is performed using an A compatible 1C frame by

setting the communication protocol setting of the Q series C24 specified by

GX Developer to the same form as set in the mode setting switch of

UC24/C24-S8.

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Mitsubishi-electric QJ71C24N Manuel d'utilisateur Page 304

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Mitsubishi-electric QJ71C24N Manuel d'utilisateur Page 304

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