Rs232 Protocol - AMC OCTO User Manual

RS232 protocol

Example:
RS232 command to unmute three outputs from input 5 till input 8
Lead
Code Section Operation
A5 AB 03 32
Check sum HEX ∑ 03 32 05 08 00 = 42
RS232 command: A5 AB 03 32 05 08 00 42
RS232 command to unmute output 1
Lead
Code Section Operation
A5 AB 03 32
Check sum HEX ∑ 03 32 01 01 00 = 37
RS232 command: A5 AB 03 32 01 01 00 37
Operation - to increase input volume by step
Lead
Code Section Operation
A5 AB 02 33
43 USER MANUAL OCTO Digital signal processor
First Last Reserved
output output Byte
05 08 00
First Last Reserved
output output Byte
01 01 00
First Last Step
input input Size
XX XX XX
First input - first input for which volume volume will be increased by RS232
command. Value range 01... 08
Last input - last input for which volume volume will be increased by RS232
Check
command. Value range 01... 08 First and last inputs must be the same in order
Sum
to adjust volume juts for one input.
42
Step size - This is a step in dB how much volume will effected. Recommended
value 1... 12
Check sum - HEX sum of section, operation, first input, last input and reserved
byte.
Example:
RS232 command to increase all inputs volume in 1 dB step
Check
Lead
Sum
Code Section Operation
37
A5 AB 02
Check sum HEX ∑ 02 33 01 08 01 = 3F
RS232 command: A5 AB 02 33 01 08 01 3F
Check
Sum
XX
First Last Step
input input Size
33 01 08 01
Check
Sum
3F