Siemens ESM - Manual (Page 52)

Interfaces, Displays and Operator Controls
Industrial Ethernet OSM/ESM
48 C79000-Z8976-C068-10
4.1.5 Standby-Sync Port
A 9-pin female connector is used on the OSMs/ESMs with 8 ports to connect the
ITP XP standard cable 9/9 for the redundant standby coupling. The casing of the
connector is electrically connected to the casing of the OSM/ESM.
The OSM TP22 and ESM TP40 do not have a standby-sync port.
A screw locking mechanism holds the connectors firmly in place.
Stby_In + Pin 1
Stby_Out + Pin 5
Pin 6 Stby_In -
Pin 7 n.c.
Pin 8 n.c.
Pin 9 Stby_Out -
n.c. Pin 2
n.c. Pin 3
n.c. Pin 4
Figure 22: Pinout