ServoMR-J4Verification pending — cross-check with the official manual
MR-J4 AL.84 — Network module initialization error
Trip — immediate stop
CAUSE
Why does it occur?
- - The network module is not connected. - An error occurred at initialization of the network module. Detail No. Detail name Cause Check method Check result Action Target 84.1 Network module undetected error (
- The network module was disconnected. Check if the network module is connected correctly. It is not connected correctly. Connect it correctly. [Other] It is connected correctly. Check (2). (2
REMEDY · Step by step
How to fix it?
Check the network module's connection status and settings, then cycle power.
Do not reset repeatedly before identifying the cause. Repeated resets while ignoring a trip/alarm can cause secondary damage (IGBT failure, motor winding damage, etc.).
SOURCE
Related manual page
Summary based on the official Mitsubishi Electric manual. For accurate and complete information, always consult the official manual.
Open official manual ↗