The signaling contact or relay contact is a floating switch with which error/fault states can be
signaled by breaking the contact.
The following errors/faults can be signaled by the signaling contact:
● The loss and the establishment of a link on a monitored port.
● The failure of one of the two redundant power supplies.
Note: Devices of the IRT PRO version do not have a redundant power supply
● The loss of the connection to the controller in PROFINET IO mode.
● The redundancy manager signals an error
● An incompatible C-PLUG was inserted.
The connection or disconnection of a communication node on an unmonitored port does not
lead to an error message.
The signaling contact remains activated until the error/fault is eliminated or until the current
status is applied as the new desired status using the SET button.
When the IE Switch X-200 is turned off, the signaling contact is always activated, i.e.
opened.
The signaling contact is connected to a 2-pin plug-in terminal block.
The following table shows the pin assignment:
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