Siemens SIMATIC ET 200S Operating Instructions Manual page 28

Brief instructions on commissioning ET 200S
2.1 Commissioning on PROFIBUS DP
Switching off load voltage on the power module
1. Switch off the load voltage on the PM-E DC24V (slot 1).
2. Monitor the status LEDs.
3. Evaluate the diagnostics.
4. Switch on the load voltage back on the power module and re-evaluate the diagnostics.
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IM151-1 STANDARD:
– SF: lights up
Power module:
– PWR: off → no load voltage available on the power module
– SF: lights up → there is a diagnostic message.
I/O modules in the voltage group:
– LEDs: light up
Result:
– Station status 1 (byte 0): Bit 3 is set → external diagnostics
– ID-related diagnostics: Byte 7.0 is set → slot 1
– Channel-specific diagnostics:
Bytes 35.0 to 35.5: 000000
Bytes 37.0 to 37.4: 10001
Result:
– Status LED on the IM 151-1 STANDARD:
SF: off
– Status LEDs on power module:
PWR: on
SF: off
– Status LEDs on I/O modules:
LEDs: off
– The diagnostic message is deleted.
→ slot 1
B
→ sensor or load voltage missing
B
Operating Instructions, 08/2008, A5E00515771-06
ET 200S