Siemens Cerberus GW-21, Technical Manual, Page: 39 / 44

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Siemens Building Technologies
Cerberus Division
E1481b
06.2000
12.6 Gateway to CMX / CF9003 connection
The cable that links the gateway to the CMX IC-2 communication interface must be as
shown in Fig. 30 and Fig. 31.
UARTs 1 and 2
To terminal no. 3 RS 232 RX
To terminal no. 4 RS 232 TX
To terminal no. 5 RS 232 GND
To IC-2
GW-21
Male co nnect or
Fig. 30 GW-21 to CMX link (UARTs 1 and 2)
To IC-2
RX 2 TX 1 1 32 31
RX 4 4 34 33
GND 2 2 36 35
TX 3
GND 5
Fig. 31 GW-21 to CMX link (screw terminal block)