Operating instructions

VPL Series PROTOCOL MANUAL

REQUEST(1) ITEM NO(2)

DATA LENGTH(1)

4. COMMAND Field

There are 2 types of COMMAND ﬁ eld, which are REQUEST and RESPONSE. REQUEST command is

sent to the PROJECTOR from CONTROLLER. On the other hand, RESPONSE command is sent by

PROJECTOR as a response to the REQUEST command.

(1) REQUEST Command

COMMAND ﬁ led for REQUEST has 3 sub ﬁ elds shown as follows.

Fig. 4-7 COMMAND Filed for REQUEST

1) REQUEST sub ﬁ eld

There are only two types of request. One is the GET request to acquire the projector information and

status. The other is the SET request to modify the projector setup.

SET (00h) Used to control turning the power on/off and to control the input selector, and to change

the various setups.

GET (01h) Used to acquire the installation information, equipment status and various setup values.

2) ITEM NO sub ﬁ eld

Refer to 6. of the section 4-3-2.

3) DATA LENGTH sub ﬁ eld

This sub ﬁ eld shows the length in byte of the DATA ﬁ eld in the SDCP packet. The maximum data

length is 128 bytes. If there is no data to be sent, its value should be 0h.