Hitachi CP-WX1100 Technical Manual page 18

Daisy Chain Communication
Get the number of connected projectors
(1) Send the following request code from the PC to the projector.
Header + Command data ('02H' + '00H' + '00H' + '00H' + connection ID (2 bytes))
(2) The projector returns the response code to the PC.
'9EH' + '04H' + connection ID (2 bytes) + number of projectors (2 bytes) + group (1
byte) + ID (1 byte)
When the projector cannot understand the received command, the error code is
sent back to the PC.
'96H' + '04H' + connection ID (2 bytes) + '00H' + '00H' + '00H' + '00H'
When the projector cannot execute the received command, the error code is sent
back to the PC.
'9FH' + '06H' + connection ID (2 bytes) + position number of projector having an
error* (2 bytes) + group (1 byte) + ID (1 byte) + error code (2 bytes)
*The position number is counted from the projector connected to PC directly,
which has No.1 as position number. Then, the next one is No.2 and so on.
Error Code
Error Code
0 The command was not accepted, since the projector connected to PC was
busy.
1 Communication error is happened between projectors.
Set the communication Group identification and
Communication ID
(1) Send the following setting code from the PC to the projector.
Header + Command data ('01H' + '00H' + target number (2 bytes) + connection ID
(2 bytes))
(2) The projector changes the group and ID setting based on the above setting
code.
(3) Projector does not send out the response data.
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