Hitachi CPX275W Projector User Manual


 
TECHNICAL - 5
TECHNICAL
TT
TT
EE
EE
CC
CC
HH
HH
NN
NN
II
II
CC
CC
AA
AA
LL
LL
((
((
cc
cc
oo
oo
nn
nn
tt
tt
ii
ii
nn
nn
uu
uu
ee
ee
dd
dd
))
))
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.