Mitsubishi Electric QJ71C24N User Manual

Q Corresponding Serial Communication Module
User's Manual (Basic)
-QJ71C24N
-QJ71C24N-R2
-QJ71C24N-R4
-QJ71C24
-QJ71C24-R2
-GX Configurator-SC (SW2D5C-QSCU-E)

Mitsubishi Electric QJ71C24N Specifications

General

Brand	Mitsubishi Electric
Model	QJ71C24N
Category	Controller
Language	English

Summary

SAFETY PRECAUTIONS

CONDITIONS OF USE FOR THE PRODUCT

2 SYSTEM CONFIGURATION AND AVAILABLE FUNCTIONS

2.2 Combinations of Programmable Controller CPU and External Device, and Available Functions

3 SPECIFICATIONS

3.1 Performance Specifications

Details performance specifications, including transmission specifications for modem function.

3.2 RS-232 Interface Specification

Details the RS-232 interface specifications, including connector pin assignments and control signals.

3.3 RS-422/485 Interface Specifications

Details the RS-422/485 interface specifications, including terminal block and cable details.

4 SETTINGS AND PROCEDURES PRIOR TO OPERATION

4.1 Handling Precautions

Provides essential safety and handling guidelines to prevent module damage or malfunction.

4.2 Settings and Procedures Prior to Operation

Outlines the overall procedure for system setup and operation before starting the Q series C24.

4.4 External Wiring

Explains the external wiring procedures and precautions for connecting the Q series C24 to external devices.

4.5 Settings for GX Developer

Details the necessary settings within GX Developer for data communication with external devices.

4.6 Settings with the Utility Package (GX Configurator-SC)

Describes settings using GX Configurator-SC for Q series C24 operations.

4.7 Individual Station Test

Describes how to perform individual station tests to verify switch settings and operation of the Q series C24.

4.8 Loopback Test

Explains how to perform a loopback test to check connections and communication functions.

4.9 Maintenance and Inspection

5 DATA COMMUNICATION USING THE MELSEC COMMUNICATION PROTOCOL

5.1 Data Communication Functions

Provides an overview of the MELSEC communication protocol (MC protocol) and its data communication functions.

6 DATA COMMUNICATION USING THE NON PROCEDURE PROTOCOL

6.1 Data Reception from the External Device

Explains data reception methods using the non procedure protocol, including receiving by complete code or data count.

6.2 Sending Data to the External Device

6.3 Data Communications Precautions

Lists precautions to be taken during non procedure protocol data communications.

7 DATA COMMUNICATION USING THE BIDIRECTIONAL PROTOCOL

7.1 Data Reception from the External Device

7.2 Sending Data to the External Device

7.4 Data Communications Precautions

Lists precautionary notes for data communications using the bidirectional protocol.

8 DATA COMMUNICATION USING THE PRE-DEFINED PROTOCOL

8.1 Function of the Pre-Defined Protocol

Describes the function of the pre-defined protocol for data transfer with external devices.

9 UTILITY PACKAGE (GX Configurator-SC)

9.1 Functions Available with Utility Package

Lists the functions available with the utility package, indicating protocol validity and reference sections.

9.2 Installing and Uninstalling the Utility Package

9.3 Utility Package Operation

9.4 System Registration to Flash ROM

Explains the menu screen and procedures for registering system settings in the Q series C24's buffer memory.

9.6 Monitor/Test

Describes operations for monitoring status, setting values, and testing output signals of the Q series C24.

10 DEDICATED INSTRUCTIONS

10.1 Dedicated Instruction List and Available Devices

10.2 G(P).ONDEMAND

10.3 G(P).OUTPUT

10.4 G.INPUT

10.5 G(P).BIDOUT

10.6 G(P).BIDIN

10.7 G(P).CPRTCL

10.8 G(P).SPBUSY

10.9 ZP.CSET (Receive data clear)

11 TROUBLESHOOTING

11.1 Checking the Status of the Serial Communication Module

Explains how to check module status, communication errors, and switch settings for troubleshooting.

11.2 Error Code Tables

Lists error codes, their contents, and corrective actions for communication errors.

11.3 Troubleshooting by Symptom

Provides troubleshooting steps based on common symptoms like LED status or communication errors.

Appendix 1.3 Precautions when replacing the QJ71C24(-R2) with the QJ71C24N(-R2/R4)

Appendix 7 Communication Support Tool (MX Component)

Appendix 7.1 Overview of MX Component

Appendix 7.2 Usage procedure of MX Component

Appendix 8 Example of Clear Process Program for Receive Data

Appendix 9 Program Examples for Using Q Series C24 at MELSECNET/H Remote I/O Station

Appendix 9.1 System configuration and program conditions

Appendix 9.2 When accessing buffer memory using sequence program

Appendix 9.3 When sending on-demand data

Appendix 9.4 When receiving data using nonprocedural or bidirectional protocol

Appendix 9.5 When sending data using nonprocedural or bidirectional protocol

Appendix 9.6 When clearing received data

Appendix 9.7 When sending data using user frames

Appendix 9.8 When performing initial setting

Appendix 9.9 When deleting user frame

Appendix 9.10 When reading user frame

(2) Program example

Appendix 9.11 When deleting user frame

Appendix 9.12 When changing the communication protocol and transmission setting

(1) Program conditions

(2) Program examples