Performing Hardware Diagnostics; Hardware Diagnostics Timing; Diagnostics Types - Mitsubishi Electric MELSEC iQ-R Series User Manual

6.2

Performing Hardware Diagnostics

Diagnose the hardware of a C Controller module.

Hardware diagnostics timing

Use the hardware diagnostics in the following cases.
• First operation
• Troubleshooting
Do not turn the power OFF, or reset the C Controller module during the hardware diagnostics. Doing so may
cause abnormal startup of the C Controller module. If it does not start normally, perform the initialization.

Diagnostics types

The modes of hardware diagnostics are shown below.
Mode Dot matrix LED
0 M-00
1 M-01
2 M-02
3 M-03
4 M-04
5 M-05
6 M-06
7 M-07
6 PROCEDURE BEFORE OPERATION
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6.2 Performing Hardware Diagnostics
Diagnostic item
Diagnostic test for Mode 1 to Mode 6
Program memory, data memory
diagnostic test
Device/label memory diagnostic test
Ethernet diagnostic test
SD memory card interface diagnostic
test
RS-232 diagnostic test
USB diagnostic test
Bus diagnostic test
Dot matrix LED test
Description
To perform diagnostic test in the order from Mode 1 to Mode 6.
To read data in the program memory and data memory, and
perform error detection.
To write/read test data to/from the device/label memory, and
check by verifying the data.
To diagnose the Ethernet port (CH1 and CH2) status.
To diagnose the SD memory card slot status.
To perform a self-loopback test for an RS-232 connector. The
wiring for self-loopback is required.
To diagnose the USB connector status.
To write/read/verify the memory of the internal bus and register.
To show the dot matrix LED test display.