MITSUBISHI ELECTRIC FX2N - Manual (Page 47)

Diagnostics 8
8-1
8. Diagnostics
8.1 Preliminary Checks
1) Check “POWER LED”. If this is OFF, please see section 8.2.
2) Check power supply for special function blocks and extension I/O units/blocks.
If this can not be supplied, 32DP-IF will not operate correctly.
3) Check that the slave addresses are the same at the 32DP-IF and in the DP-master configu-
ration. If the slave addresses are not the same in the 32DP-IF and in the DP-master,
change these addresses to match in both modules.
4) Check that the parameters of 32DP-IF are set correctly in the DP-master.
If the parameters of the 32DP-IF are not set correctly in the DP-master, communication over
the Profibus-DP network may be affected.
5) Check whether the network wiring and/or the cables for the extension blocks/units are prop-
erly connected to the 32DP-IF.
6) Check that the system configuration rules have not been exceeded, i.e. the number of spe-
cial function blocks does not exceed 8 and control I/O of 32DP-IF is 256 or less.
7) Put RUN/STOP switch on the 32DP-IF into RUN.
FX2N-32DP-IF Profibus-DP Interface Unit