Siemens SIMATIC ET 200S Manual page 284

Power Modules
Diagnostics: No load voltage
You use this parameter to enable a diagnostic message about missing load
voltage.
In the absence of load voltage, only the diagnostic message of the affected power
module is forwarded to the DP master. The SF error LEDs of all the modules in the
affected potential group come on.
Diagnostics: Fuse blown
You use this parameter to enable a diagnostic message about a blown fuse.
In the event of a blown fuse, only the diagnostic message of the affected power
module is forwarded to the DP master. The SF error LEDs of all the modules in the
affected potential group come on.
Voltage type
You use this parameter to select the load voltage connected to the power module:
DC voltage or AC voltage.
The correct diagnosis is thus provided in the event of missing load voltage or a
blown fuse.
11-2
ET 200S Distributed I/O System
EWA-4NEB780602402-09