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V01.0| 2016/04
Programmable Gateways BLxx-PG-EN-V3
4.2.2 I/O diagnostics
The diagnostics of the local I/O modules are available as process data in the modules' I/O mapping
in CODESYS.
Undervoltage U
sys
„xUndervoltageUsys“
The load or system voltage are out
of the permissible range.
Check the system power supply at the
gateway.
Undervoltage at U
L
„xUndervoltageFieldSupply_Ul“
Overload
sys
„xOverloadIsys“
Overload at the system supply.
Fig. 24: I/O-module diagnostics in the process image.
Diagnostics Meaning
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