Figure 5-2 Definition Of Rs485; Figure 5-3 Connect With Rs485 Converter - Honeywell HD-JC-010 User Manual

Honeywell
RS 485 port pins definition：

Figure 5-2 Definition of RS485

PIN1
You can use if you use RS485 connection via converter. See Figure 5-3.

Figure 5-3 Connect with RS485 Converter

485->232 converter
One 485 bus can connect with thirty-two RS485->232 converters，one RS485->232
converter can connect with twelve DVRs.
24
PIN2
PIN3
PIN9
PIN1 ： RS485 A line
PIN2 ：RS485 B line
PIN3 ：RS485 A line
PIN4 ：RS485 B line
PIN5 ：RS485 A line
PIN6 ：RS485 B line
485->232 converter
......
PIN4 PIN5
PIN6
A B
PIN6
485->232 converter
......