Honeywell 900CS10-00 Installation Manual page 12

RS232 Communications
If using RS232 communications to have the station communicate with other Honeywell or Modbus-
compatible equipment, create a communications cable as follows.
Terminal no.
Page 12 of 14
RJ12 connector
6
1
Signal
1 CTS
2 RX
3 Ground
4 Ground
5 TX
6 RTS
Connector of slave device
5
9
4
8
3
7
2
6
1
Terminal no. Signal
7 RTS
3 TXD
5 Ground
1 DCD
2 RXD
8 CTS
51-52-33-157 Rev. 6