Panasonic RS-232C - Manual (Page 2)

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Using the Serial Terminal
1. Basic Format
Transmission from the computer begins with STX, then the command, parameter and ETX are sent in this
order.
Add parameters according to the details of control.
Basic control command (without parameter)
Start (STX) Command End (ETX)
1 byte 3 bytes 1 byte
Basic control command (with parameters)
Start (STX) Command Separator
(colon)
Parameters End (ETX)
1 byte 3 bytes 1 byte Undefined length 1 byte
Response (Callback) of the basic control command
In the period when the command can be accepted
Differs according to each command.
In the period when commands cannot be accepted or the command does not exist
Hexadecimal 02h 45h 52h 34h 30h 31h 03h
Character E R 4 0 1
In case of the parameter error
Hexadecimal 02h 45h 52h 34h 30h 32h 03h
Character E R 4 0 2
Notes:
• When sending several commands, be sure to wait for a response from the projector, and send the next
command after 0.5 seconds or more pass.
• It might take time by the time the response returns because the command is processed in the
projector. Set the time-out to 10 seconds or longer.