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23
English
Appendix: RS485 Commands
VI
For housings that come with IR illuminators, wiper, and washer, commands can be
delivered via the RS485 protocol. The RS485 connection uses the Pelco D protocol.
Conguration parameters:
Baud rate 2400
Data bits 8
Parity None
Stop bit 1
Command format:
Byte1 Byte2 Byte3 Byte4 Byte5 Byte6 Byte7
Sync Addr CMND1 CMND2 DATA1 DATA2 CKSM
Addr range: 0x00 ~ 0xFE. CKSM: check sum is the last 8 bits of the sum of Byte2 through
Byte6.
Command Group 1:
Command Description Command (hexadecimal, "ox" is
ommited)
Note
VaIR Lens Stop FF 01 00 00 00 00 01 Pelco D - Zoom Stop
VAIR Lens Wide FF 01 00 40 00 00 41 Pelco D - Zoom Wide
VaIR Lens Tele FF 01 00 20 00 00 21 Pelco D - Zoom Tele
Wiper On FF 01 00 09 00 01 0B Pelco D – Aux 1 On
Wiper Off FF 01 00 0B 00 01 0D Pelco D – Aux 1 Off
Wiper and Washer On FF 01 00 09 00 02 0C Pelco D – Aux 2 On
Wiper and Washer Off FF 01 00 0B 00 02 0E Pelco D – Aux 2 Off
IR Led Force On FF 01 00 09 00 03 0D Pelco D – Aux 3 On
IR Led Force Off FF 01 00 0B 00 03 0F Pelco D – Aux 3 Off
Command Group 2:
Command Name Command (hexadecimal, ox
is ommited)
Note
Addr conguration FF 01 00 18 01 dd CKSM dd: 0x00 ~ 0xFE; for example, when addr
is 2, the command looks like FF 01 00 18
01 02 1C
IRMode FF 01 00 18 02 mm CKSM mm: IR mode
mm=0x02: Light Sensor Auto (Default)
mm=0x03: DI Trigger
mm=0x04: via RS485 Command
(When receiving IR Led Force On / IR Led
Force Off command, will switch to using
the IR Mode -RS485 Command)
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