Siemens SENTRON VL Series System Manual page 35

● The unassigned user input can be connected via a contact element to the 24 V DC
voltage from Pin1 to transmit the status of the contact element.
● Free operator output on COM15 (from Version 0907 or 0905; firmware version V1.13.0).
From this version, the COM module offers an alternative function with which the status of
the tripped signaling switch S45 of the BSS module is output at the operator output. A
high level at the output means the circuit breaker has tripped.
Switchover from the Modbus "operator output" to the Modbus "tripped signal" takes place
via data point 19 (data set 93, byte 11), with bit 4 (bit 4 to 1). Switchover to "operator
output" takes place automatically by setting or resetting the operator output (byte 11.0 or
byte 11.1 in data set 93).
Connection of the COM15
The figure below shows how COM15 must be wired with the auxiliary current plug-in
contacts to allow switching on/off via PROFIBUS. This figure only applies for contacts with
24 V DC!
Figure 3-4
3WL/3VL circuit breakers with communication capability - PROFIBUS
System Manual, 03/2011, A5E01051353-02
Wiring of the COM15 at 24 V DC
3WL air circuit breakers
3.2 COM15 module and BSS module
35