Eiki LC-WNB3000N, Руководство по обслуживанию

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2.
RS232 Command
-RS232 Control
-Communication Protocol
Items Specification
Standard Baud rate 9600 bps
Data length 8 bits
Parity None
Stop bit 1 bit
Flow Control None
-RS232 Cable Define
PC side Projector side with D-sub pin
RX 2 RX 3
TX 3 TX 2
GND 5 GND 5
-
Communication
1. The Projector command is defined one command/one line that starts “ C” and ends carriage
return CR .
2. There are two types of command, functional execution commands and status read commands
3. Response for status read command after accepting has different characters.
Example:
A. Functional execution command:
Power ON command is sent to the projector with “C00” CR, the projector returns a *ACK CR
or NAK CR code
PC Projector “C” “0” “0” CR
Projector PC processing command ACK (or NAK) CR
B. Status read command:
Power Status command is sent to the projector with “CR0” CR, the projector returns a
power status plus CR or NAK CR code
PC Projector “C” “R” “0” CR
Projector PC processing command “0” “0” “0” (or NAK) CR