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122 - ENGLISH
Chapter 6 Appendix — Technical information
Sync. method Asynchronous
Baud rate 9 600 bps
Parity None
Character length 8 bit
Stop bit 1 bit
X parameter None
S parameter None
Basic format
Transmission from the computer starts with STX, then the ID, command, parameter, and ETX are sent in this order. Add parameters according
to the details of control.
(2 bytes)
ID2 characters
(2 bytes)
Semi-colon
(1 byte)
Colon (1 byte)
Command 3 characters
(3 bytes)
Parameter
(undefined length)
End (1 byte)
Start (1 byte)
ZZ, 01 – 64 and 0A – 0Z
ID setting area
Attention
rf
If a command is transmitted after the lamp starts illuminating, there may be a delay in response or the command may not be executed. Try
sending or receiving any command after 60 seconds.
rf
When transmitting multiple commands, be sure to wait until 0.5 seconds has elapsed after receiving the response from the projector before
sending the next command. When transmitting a command which does not need a parameter, a colon (:) is not necessary.
Note
rf
If a command cannot be executed, an “ER401” response is sent from the projector to the computer.
rf
If an invalid parameter is sent, an “ER402” response is sent from the projector to the computer.
rf
ID transmission in RS-232C supports ZZ (ALL) and 01 to 64, as well as 0A to 0Z groups.
rf
If a command is sent with a specied ID, a response will be sent to the computer only in the following cases.
rg
It matches the projector ID
rg
ID setting is set to ALL and [RESPONSE(ID ALL)] is [ON]
rg
ID setting is set to GROUP and [RESPONSE(ID GROUP)] is [ON]
rf
STX and ETX are character codes. STX shown in hexadecimal is 02, and ETX shown in hexadecimal is 03.
When multiple projectors are controlled
When multiple projectors are all controlled
When controlling multiple projectors together via RS-232C, perform the following settings.
1)
Set a different ID for each projector.
2)
Set [RESPONSE(ID ALL)] to [ON] in only one
projector.
3)
Set [RESPONSE(ID ALL)] to [OFF] for all other
projectors set in Step 2).
When multiple projectors are all controlled by group unit
When controlling multiple projectors by group unit via RS-232C, perform the following settings.
1)
Set a different ID for each projector.
2)
Set [RESPONSE(ID GROUP)] to [ON] in only
one projector.
3)
Set [RESPONSE(ID GROUP)] to [OFF] for all
other projectors set in Step 2).
Note
rf
There will be no response if 2 or more projectors have [RESPONSE(ID ALL)] set to [ON].
rf
There will be no response if 2 or more projectors of the same group have [RESPONSE(ID GROUP)] set to [ON].
rf
When setting multiple groups, set [RESPONSE(ID ALL)] to [ON] in only one projector in each group.