Siemens SIMATIC S7-400 Operating Instructions Manual page 26

LEDs and connectors
2.1 LEDs
Table 2- 2 Operating statuses, errors/faults, OPC configuration, firmware update
INTF EXTF BUSF
(red) (red) (red)
Operating status
Error/fault states
-
-
OPC UA configuration
- - -
- - -
- - -
- - -
26
SERVER CLIENT RUN
(green) (green) (green
)
- -
- -
- -
- -
- -
- - -
- -
- -
- -
- -
- -
- -
STOP Meaning
(yel-
low)
Loading the firmware after power ON
Starting up (STOP->RUN)
Running (RUN)
Stopping (RUN->STOP)
Stopped (STOP)
In STOP mode, configuring and performing diagnostics
on the CP remain possible.
STOP with internal error or memory reset.
(for example IP duplicate addressing detected during
startup of the CP in network)
If the CP has a valid IP address, the following applies in
this status:
The CPU or intelligent modules in the rack remain
•
accessible using PG functions (over MPI or the ISO
protocol).
Access using SNMP or HTTPS is not possible.
•
- Duplicate IP address detected during CP operation.
RUN with external error. One or more partner devices are
not obtainable.
A duplicate IP address was detected after the CP was
•
in the RUN status.
or
Difference in the transmission medium or the network
•
settings between the configuration and the actual sys-
tem
Module fault / system error
- OPC server enabled in the configuration
- OPC server disabled in the configuration
- OPC client enabled in the configuration
- OPC client disabled in the configuration
Operating Instructions, 01/2017, C79000-G8976-C427-02
CP 443-1 OPC UA