Send Mc-4 Ir Command Example - Lexicon MC-4 V1.00 - SERIAL PROTOCOL DEFINITIONS REV 1-6 Manual

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6.6.2 Send MC-4 IR Command Example

SOP DLL DC CMD
F1 04 39
This example shows how to transmit the IR command for "
the CD input for the Main Zone. The bytes are transmitted from left to right and they are defined as:
Byte 0: Start of Packet (F1 hex)
Byte 1: Data Link Layer (DLL) Data Count (DC); for an IR command this would be 4 bytes to follow
Byte 2: The Application Layer Command, in this case it is 39 hex indicating this is an IR command
packet.
Byte 3: The Application Layer Data Count (DC); for this packet it is 1 data byte to follow.
Byte 4: The Application Command Data: This IR Command Packet is transmitting Key Code
" "(23 hex). To transmit other IR Key Codes the user would replace this byte with other
MAIN_CD
IR key codes as found in
Byte 5: End of Packet (F2 hex)
AppDC DATA0
IR Key Code
01 23
Appendix C: MC-4 IR
MC-4 Serial Communications Protocol
EOP
F2
". This example command will select
MAIN_CD
Codes.
42