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Mitsubishi Electric MELSEC iQ-RJ71EN71 User Manual page 223

Melsec iq-r series cc-link ie field network
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Module communication test
The module communication test checks the hardware of the master/local module. When the communication using the master/
local module is unstable, whether an hardware failure occurs or not can be checked.
The following lists the tests performed.
Test item
Internal self-loopback test
External self-loopback test
■Procedure (except for a redundant system)
1.
Set the module operation mode to module communication test mode in the following item.
[Navigation window]  [Parameter]  [Module Information]  Target module  [Application Settings]  [Module
Operation Mode]
2.
Connect the P1 and P2 of the master/local module with an Ethernet cable.
3.
Write the module parameters to the CPU module.
4.
Reset or power off and on the CPU module to start the module communication test.
• Do not perform a module communication test while connected to another station. The operation of another
station may failed.
• For the RJ71EN71 or RnENCPU, when "Port 1 Network Type" is set to "Ethernet" and "Port 2 Network
Type" is set to "CC-Link IE Field", set both of the P1 and P2 to the module communication test mode.
■Procedure (for a redundant system)
To perform a module communication test in a redundant system, set the operation mode to separate mode. Before execution,
perform system switching in advance so that the module communication test target station operates as the standby system.
The following describes the procedure for executing a module communication test when both systems are in online mode for
the system B RJ71GF11-T2.
1.
Set the module operation mode of system A to online mode in the following item.
[Navigation window]  [Parameter]  [Module Information]  Target module  [Application Settings]  [Module
Operation Mode]
2.
Set the module operation mode of system B to module communication test mode in the following item.
[Navigation window]  [Parameter]  [Module Information]  Target module  [Application Settings]  [Redundant
System Settings]  [Module Operation Mode (System B)]
3.
Connect the P1 and P2 of the system B RJ71GF11-T2 with an Ethernet cable.
4.
Set the system B CPU module to the STOP state.
5.
Write the module parameters to the system B CPU module.
6.
Reset or power off and on the system B CPU module to start the module communication test.
• To perform a module communication test on system A, set the module operation mode of system A to
module communication test mode and the module operation mode of system B to online mode.
• When returning the module to a normal operation state after the test, reconnect the Ethernet cable as
before the test, and then execute the Process CPU (redundant mode) memory copy to transfer the
parameters of the control system to the standby system. ( MELSEC iQ-R CPU Module User's Manual
(Application))
• Do not perform a module communication test while connected to another station. The operation of another
station may failed.
Description
Checks whether the communication function of the module can be performed
normally.
Checks whether the communication can be performed normally with the cable
connected between two connectors.
4.2 Checking the Module Status
4 TROUBLESHOOTING
221
4
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