25-Pin Port And Switch Box Connection; Figure 8-2 Make Rs485 Line - Honeywell HD-JC-010 User Manual

Figure 8-2 Make RS485 Line

RS485 port of keyboard
（Green alarm socket）

25-pin Port and Switch Box Connection

Connect switch 25-pin box RS232 port with DVR RS232 port. (25-pin outlet supports
maximum twelve RS232 ports. Switch is just for sending not for receiving. So you can use
two cables: GND and TXD)
Please refer to the following sheet if you are connecting 485 switch box to DVR See Figure
8-3.
PIN1 ： RS485 A line
PIN2 ：RS485 B line
PIN3 ：RS485 A line
PIN4 ：RS485 B line
PIN5 ：RS485 A line
PIN6 ：RS485 B line
RS485 switch box port
（6-pin crystal ）
Honeywell
43