Siemens SIMATIC S5 Manual page 202
Distributed i/o system
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5. Set the mode selector switches of the IM 308-C from OFF or ST to RN.
6. Switch on the power supply of the hosts.
7. Use the FB IM308C to check the diagnostic messages (FCT = MD).
8. Restart the CPU.
9. Via the AS 511 interface of the programmable controller, you can execute
Warning
!
If you use the STATUS/CONTROL function to address consistent data areas,
communication on the SINEC L2 DP bus may be interrupted (outputs of DP
slaves without response monitoring may be frozen).
Remedy: Switch the power supply of the IM 308-C off and then on again.
To avoid this difficulty, do not use the STATUS/CONTROL function to
address consistent data areas.
ET 200 Distributed I/O System
EWA 4NEB 780 6000-02a
Result: The IM 308-C powers up (BF (Bus Fault) LED flashes) and loads
the slave parameters entered in COM ET 200 Windows to the DP slaves.
After loading the slaves, the IM 308-C compares the configuration
parameterized with COM ET 200 Windows with the actual configuration.
The "BF" LED on each of the DP slaves connected to the bus must go
out. When data is exchanged between all the parameterized DP slaves and
the IM 308-C, the "BF" LED on the IM 308-C goes out as well.
These messages will tell you whether or not data exchange with the DP
slaves is functioning correctly.
the status/control function for all DP slaves the addresses of which are
contained in the process image.
To run this function, you must know which addresses in the STEP 5
application program are assigned to the inputs and outputs of the DP
slaves.
IM 308-C – starting ET 200
11-3
11
- Quick Links:
- IM 308-C Master Interface
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