Infrared Link Modul (ILM)6ZB5530–3AC30–0BA1
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Copyright by Siemens
6.4 Operation with Signaling Contact
The signaling contact is used to monitor the PROFIBUS ILM via a digital input on a PLC or as part of a current
loop. If problems occur the contact opens, in other words a connected current loop is then interrupted. By
setting four switches, the user decides which events trigger the signaling contact. If more than one problem is
configured to trigger the signaling contact, the problem cannot be localized using the signaling contact alone. In
this case, the LED displays can also provide information and step-by-step disabling of the switches that
activate the signaling contact can narrow down the problem.
Note
Remember that if you want to activate the signaling contact when the acknowledgment pulse is absent, the
“monitor link with acknowledgment pulse” configuration must be activated.
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