Cables And Connections; Connection To Gw-20; Connection To Gw-21 - Siemens Cerban Splitter CBS-3 Technical Manual

Siemens Building Technologies
Cerberus Division
5

Cables and connections

5.1

Connection to GW-20

The figure below shows how to connect the Cerban Splitter CBS-3 to the Gat eway GW-
20, to transmit messages to the CMS/LMS monitoring system.
Only UARTs 3 and 4 can be connected to the Gateway.
CBS-3
18
17
16
15
14
13
12
GND
11
UART4 Rx4
10
Tx4
9
GND
8
UART3 Rx3
7
Tx3
6
GND
5
UART2 Rx2
4
Tx2
3
GND
UART1 2
Rx1
1
Tx1
Fig. 6 GW-21/GW-20 connection (screw terminal block)
5.2

Connection to GW-21

The figure below shows how to connect the Cerban Splitter CBS-3 to the GW-21 asyn-
chronous port.
CBS-3
18
17
16
15
14
13
12
GND
UART4 11
Rx4
10
Tx4
9
GND
8
UART3 Rx3
7
Tx3
6
GND
5
UART2 Rx2
4
Tx2
3
GND
UART1 2
Rx1
1
Tx1
Fig. 7 Connection to GW-21
Male connector
Net-M Pad in GW-20
GW-21
18
GND
17 UART6
Rx6
16
Tx6
15
GND
14
Rx5 UART5
13
Tx5
12
GND
11 UART4
Rx4
10
Tx4
9
GND
8
Rx3 UART3
7
Tx3
6
GND
5
Rx2 UART2
4
Tx2
3
GND
2 UART1
Rx1
1
Tx1
e1148c
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