Operating instructions

Interfaces, Displays and Operator Controls
Industrial Ethernet OSM/ESM
C79000-Z8976-C068-04
47
Signaling Contact
The following is signaled via a floating signaling contact (relay contact) when contact
is broken:
The failure of a monitored power supply. Which power supply is monitored is
specified in the fault mask (see Section 4.2.3).
The incorrect link status of a monitored port (in other words, the port is not correctly
attached or there are no link test pulses coming from the partner device). The ports
to be monitored are selected using the fault mask.
When at least one port is segmented.
In the RM Mode (additional)
The incorrect link status of port 7 or port 8 depending on the status of the fault
mask.
When a second OSM is switched to the RM mode in the same ring.
OSM/ESM in Normal Mode and ITP XP Standard Cable 9/9 Plugged into the Standby
Sync Port:
Short-circuited ITP XP Standard Cable 9/9
Bad standby configuration: The partner device connected via the ITP XP Standard
Cable 9/9 is not switched to standby.
If there is an incorrect link status on a standby port.
OSM/ESM in the Standby Mode:
ITP XP Standard Cable 9/9 not plugged in, short-circuited or broken
Bad standby configuration: The partner device connected via the ITP XP Standard
Cable 9/9 is switched to standby.
If there is an incorrect link status on a standby port.