Siemens SIMATIC ET 200S - Switching off the load voltage on the power module

Brief Instructions on Commissioning ET 200S
2-8
ET 200S Distributed I/O System
EWA-4NEB 780602402-12
Switching off the load voltage on the power module
1. Switch off the load voltage on the PM-E 24 VDC (slot 1).
2. Watch the status LEDs.
IM 151 ST ANDARD:
-- SF: lit
Power module:
-- P W R : o f f ⇒ No load voltage at power module
-- SF: lit ⇒ diagnostic message exists.
I/O modules in the potential group:
-- LEDs: lit
3. Evaluate the diagnosis.
Result:
-- Station status 1 (byte 0): Bit 3 is set ⇒ External diagnostics
-- ID-related diagnostics: Byte 7.0 is set ⇒ slot 1
-- Channel-specific diagnosis:
Byte 35.0 to 35.5: 000000
B
⇒ slot 1
Byte 37.0 to 37.4: 10001
B
⇒ encoder or load voltage missing
4. Switch on the load voltage on the power module again, and evaluate the
diagnosis again.
Result:
-- Status LEDs on the IM151-1 STANDARD:
SF: Off
-- Status LEDs on the power module:
PWR: on
SF: Off
-- Status LEDs on the I/O module:
LEDs: Off
-- The diagnostic message is deleted.