Operating Instructions

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Siemens TX-I/O™ Module system – Functions and operation CM110561en_08
Building Technologies Digital output functions 2018-10-25
• The I/O status LED is ON when the relay is active, i.e. when the N/O contact is
closed and the N/C contact is open.
• In the event of an error, the I/O status LED and the module status LED flash.
• The meaning of the I/O status LED can be parameterized (TXM1.6R-M only):
Normal = green (default) / Alarm = Red / Service = Yellow.
For details, especially in relation to flashing pattern and errors: refer to the section "Dis-
play, operation and diagnostics" in the TX-I/O™ Engineering and installation guide [6].
Display