Manual Hitachi CPX320W (page 31 of 38) (Dutch)

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TECHNICAL - 6

TTEECCHHNNIICCAALL

((ccoonnttiinnuueedd))

RS-232C communication

(1) Turn off the projector and computer power supplies and connect with the RS-232C cable.

(2) Turn on the computer power supply and, after the computer has started up, turn on the projector

power supply.

Control jack

D-sub 15-pin shrink jack

RS-232C jack

D-sub 9-pin

Projector Computer

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

byte_0 byte_1 byte_2 byte_3 byte_4 byte_5

Action Type Setting code

low high low high low high

Command data chart

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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Hitachi CPX320W Manual

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