Hitachi CP-X1200 user manual RS-232CCommunication, Connecting The Cable, Communications Setting

RS-232CCommunication

Connecting The Cable

1	Turn off the projector and the computer power supplies.
	Connect the CONTROL port of the projector with a RS-232C port of the computer by
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	a RS-232C cable. Use the cable that fulfills the specification shown in the previous
	page.
	Turn on the computer power supply and after the computer has started up, turn on
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	the projector power supply.

Communications Setting

19200bps, 8N1

1. Protocol

Consist of header (7 bytes) + command data (6 bytes).

2. Header

BE + EF + 03 + 06 + 00 + CRC_low + CRC_high

CRC_low : Lower byte of CRC flag for command data

CRC_high : Upper byte of CRC flag for command data

3.Command data

Command Data Chart

byte_0	byte_1	byte_2		byte_3	byte_4	byte_5
Action			Type		Setting code
low	high	low		high	low	high

Action (byte_0 - 1)

Action	Classification	Content
1	SET	Change setting to desired value.
2	GET	Read projector internal setup value.
4	INCREMENT	Increment setup value by 1.
5	DECREMENT	Decrement setup value by 1.
6	EXECUTE	Run a command.

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