Siemens SIMATIC ET 200M

Getting Started
2-12
Distributed I/O Device ET 200M
EWA-4NEB780600602-06
SM 322: Short Circuit to L+
1. Open the front door of the DO module and use a wire to short-circuit the digital
output 0 (terminal 3) to L+ (terminal 1).
2. Watch the status LEDs.
IM 153-2:
– SF: comes on
SM 322; DO 8 x 24 V DC/0.52 A:
– SF: comes on ⇒ Diagnostic message has been issued
– F0: comes on ⇒ Channel error
– 0: Off ⇒ Output is not active
3. Evaluate the diagnostic message.
Result:
– Station status 1: Byte x.3 is set ⇒ External
diagnostics
– Module diagnosis Byte (x+7).4 is set ⇒ Slot 5
– Channel-specific diagnosis:
Byte (x+16).0 to (x+16).5: 000100
B
⇒ Slot 5
Byte (x+17).0 to (x+17).5: 000000
B
⇒ Channel 0
Byte (x+18).0 to (x+18).4: 00001
B
⇒ Short circuit
4. Remove the wire between terminal 3 and terminal 1.
Evaluate the diagnostic LEDs again.
IM 153-2:
– SF: Off
SM 322; DO 8 x 24 V DC/0.52 A:
– SF: Off
– F0: Off
– 0: On
The diagnostic message is erased.
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