Delta AH500 Manual page 607

The high byte of the state register is used for monitoring whether the CPU module is in RUN or
STOP state and the low byte is for monitoring whether the work state of AH10PFBS-5A is normal.
See the indication of the state register values in the following table.
Content
Byte
value
0
High byte
80
0
Low byte
F0~F6
13.8.4 Diagnosis via ISPSoft
While ISPSoft is being used to read the system log of PLC, the meanings of error codes occurring
in the PROFIBUS network are shown below.
When ISPSoft is in state of monitoring, please select menu "PLC">"System Log" option to find the
system log as below.
Ch a pt er 1 3 P RO F IB U S Slave M o du l e A H1 0 PF B S
Indication
The CPU module is in RUN state.
The CPU module is in STOP state
AH10PFBS-5A is in normal state.
AH10PFBS-5A can not work
normally.
How to correct
--
Turn the RUN/STOP switch of the
CPU module to RUN.
--
See digital displayer in Section 8.2
on how to deal with problems
indicated by F0~F6.
13-13