Appendix A: Stt/Gw-21 Connection; First Case - Siemens Cerberus GW-21 Technical Manual

Siemens Building Technologies
Cerberus Division
9

Appendix A: STT/GW-21 Connection

The STT is a device manufactured and sold by Cerberus Guinard. It can be connected
to the Gateway GW-21 in two different ways, shown in Fig. 17 and Fig. 18.
9.1

First case

Using this configuration the LMS system does not see the STT subsystem: its role is
purely local. The communication line that connects GW-21 to STT works only from the
GW-21 to the STT. Up to 3 CS11 can be connected to the gateway and all three of
them can use the STT.
Fig. 17 STT as synoptic panel driver
STT has to be configured as STT subsystem on the gateway and it must not be config-
ured on LMS. STT used as synoptic panel can be connected to any available UARTs.
GW-21.xx
CS11 STT
23
E1481b
06.2000