RS232 Protocol

2
Meta Encoding
The start byte for all command and response strings is FE. To keep the device
from encountering the start byte FE in any position other than as the start byte, any
occurrence of the byes FD or FE in a command string must be converted to either FD 00
(for FD), or FD 01 (for FE). This will allow the string to pass while masking any
occurrence of the byte FE except as the start byte.
Commands that have Meta Encoding applied will be highlighted in red.
Press & Release Keys
Certain commands require a starting “Key Pressed” command and will
automatically repeat the command until a “Key Released” command is received.
The key pressed command is the standard Type 10 command, while key released
commands use the same command Key but with Type 11.
Commands requiring press & release are highlighted in orange.
Section 1: Control Command List
Table 1 – Type 10 Primary Commands 3
Table 2 – Type 14 Main Zone Commands 5
Table 3 – Type 15 Record Source Commands 6
Table 4 – Type 16 Zone 2 Commands 6
Table 5 – Type 17 Zone 3 Commands 7
Table 6 – Type 18 Zone 4 Commands 7
Table 7 – Type 30 Volume Direct Commands 8
Table 8 – Type 32 Zone 2 Volume Direct Commands 9
Table 9 – Type 32 Zone 3 Volume Direct Commands 9
Table 10 – Type 32 Zone 4 Volume Direct Commands 9
Table 11 – Type 40 12V Trigger Direct Commands 10