JVC ProVerite PS-420W Owner's Manual page 34

RS-232C
Prefix code
command
#0
Set CEC 0xCC
Ack Set 0xCC
CEC
Read CEC 0xCC
Ack Read 0xCC
CEC
Controlling the Multiple Product
Header (5 bytes)
Prefix code Set Payload
#1 ID Type
0x33 0
0x55 0
0x33 1
0x55 1
Payload (4 bytes)
# of payload
Command
bytes
4 0xA5
4 0xA5 0xE0 : OK
0xE1 : NG
4 0xA6 reserved
4 0xA6 0xE0 : OK
0xE1 : NG
A4
data #0 data #1 data #2
0 : Off reserved reserved
1 : On (0x00) (0x00)
reserved reserved
(0xFF) (0xFF)
reserved reserved
(0x00) (0x00) (0x00)
0 : Off reserved
1 : On (0xFF)
Checksum
(1byte)
CS #0
Header XOR
Payload
Header XOR
Payload
Header XOR
Payload
Header XOR
Payload