Diagnostics; Preliminary Checks - Mitsubishi Electric FX2N-64DP-M Hardware Manual

FX2N-64DP-M Profibus-DP Master Block
5.

Diagnostics

If the 64DP-M does not see to operate normally, check the following items.
5.1

Preliminary Checks

1) Check "POWER LED"
If "POWER LED" is OFF, check the wiring of the 24V DC power supply, and check whether
the 24V DC voltage source capacity is sufficient.
2) Check "RUN LED"
If "RUN LED" is OFF, check status of the Exchange Start Request (BFM #2 Bit0). If this bit is
OFF, turns this bit to ON.
3) Check "FAULT LED"
If "FAULT LED" is OFF, check the diagnostic information in the Communication Trouble
Area (BFM #2140 ~ #2179). For diagnostic information, refer to section 4.12.
4) Check the wiring and connection for the Profibus-DP
If the wiring and connection for the Profibus-DP is incorrect, correct wiring and connection.
5) Check the system configuration and parameter of the 64DP-M for the Profibus-DP
If the system configuration of Profibus-DP is not corresponding to parameter of the
64DP-M, match them.
6) Check the error of the PLC.
If the FROM/TO instruction error occurs at this instruction for the 64DP-M in the PLC,
operate correctly this instruction.
Diagnostics 5
5-1