Mitsubishi Electric MELSEC iQ-R Series Migration Manual page 44

Servo system controller motion controller

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2. DETAILS OF MIGRATION FROM Q17nCPUN(-T) TO RnMTCPU

When the RnMTCPU detects an error, the error is displayed on the Motion CPU LED display,

and the error code is stored in the relevant device. Use the relevant device in which the error

code is stored in the program to enable a machine control interlock.

The following shows the methods for checking and cancelling errors.

(a) Check methods when an error occurs

1) LED display

2) Special relays/special register

3) MELSOFT GX Works3 module diagnostics (error information list)

4) MELSOFT MT Works2 Motion CPU error batch monitor (Motion error history)

5) Axis status signals, and axis monitor devices (Error details detected for each axis)

• The ERROR LED is ON (or flickers).

• The dot matrix LED displays ""AL" (flickers 3 times) → "Error code" (4 digits shown 2

at a time)".

[Special relays]

• Latest self-diagnostics error (SM0)

• Latest self-diagnostics error (SM1)

• Warning detection (SM4)

• Detailed information 1: flag in use (SM80)

• Detailed information 2: flag in use (SM112)

[Special registers]

• Latest self-diagnostics error code (SD0)

• Clock time for latest self-diagnostic error occurrence (SD1 to SD7)

• Self-diagnostic error code (SD10 to SD25)

• Detailed information 1 information category (SD80)

• Detailed information 1 (SD81 to SD111)

• Detailed information 2 information category (SD112)

• Detailed information 2 (SD113 to SD143)

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