JVC DLA-RS45U Command Communication Specification for D-ILA Projectors (v1.7 f - Page 33

Source Asking [SourCe]

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4 Command control 4.11 Source Asking [SourCe] Used to refer signal input status of the projector. Command code HEX 0x53 0x43 Table 4-19 SOURCE CMD ASCII 'S' 'C' Function Source asking [SourCe] Operation Reference Parameters Data length: 1 【Data 0】 HEX 0x30 0x31 ASCII '0' '1' Table 4-20 SOURCE CMD DATA Operation No signal or out of range Available signal is input to the projector. When the projector is not powered on and it receives the command, the projector ignores the command and does not respond. 4.11.1 Reference Use the command as shown in the following examples. Purpose: To confirm the current status of the projector. (Current status: No signal or out of range) (1) Transmit the data from the external controller to the projector as follows. 1: External controller → 0x3F 0x89 '?'(Reference) PJ 0x01 Individual : 1 0x53 'S' 0x43 'C' 0x0A End (2) If the projector receives the data (1) above and the command receipt is normal, an ACK is returned from the projector as follows. 2: ← Projector 0x06 0x89 0x01 0x53 0x43 0x0A ACK PJ Individual : 1 'S' 'C' End (3) The projector transmits the status of the input signal to the external controller. 3: ← Projector 0x40 0x89 0x01 0x53 0x43 '@'(Response) PJ Individual : 1 'S' 'C' 0x30 No signal or out of range 0x0A End By the above exchange, it can be confirmed that whether the status of input signal of the projector is no signal or out of range. 33 / 80 PJ03220107B

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4 Command control
33 / 80
PJ03220107B
4.11 Source Asking [SourCe]
Used to refer signal input status of the projector.
Command code
Table 4-19
SOURCE CMD
HEX
ASCII
Function
Operation
Reference
0x53
0x43
'S'
'C'
Source asking [SourCe]
°
Parameters
Data length: 1
【
Data 0
】
Table 4-20
SOURCE CMD DATA
HEX
ASCII
Operation
0x30
'0'
No signal or out of range
0x31
'1'
Available signal is input to the projector.
°
When the projector is not powered on and it receives the command, the projector ignores the command and does not respond.
4.11.1 Reference
Use the command as shown in the following examples.
Purpose: To confirm the current status of the projector. (Current status: No signal or
out of range)
(1)
Transmit the data from the external controller to the projector as follows.
1: External controller →
0x3F
0x89
0x01
0x53
0x43
0x0A
'?'(Reference)
PJ
Individual : 1
'S'
'C'
End
(2)
If the projector receives the data (1) above and the command receipt is normal, an ACK is returned from the projector as follows.
2: ← Projector
0x06
0x89
0x01
0x53
0x43
0x0A
ACK
PJ
Individual : 1
'S'
'C'
End
(3)
The projector transmits the status of the input signal to the external controller.
3: ← Projector
0x40
0x89
0x01
0x53
0x43
0x30
0x0A
'@'(Response)
PJ
Individual : 1
'S'
'C'
No signal or out of range
End
By the above exchange, it can be confirmed that whether the status of input signal of the projector is no signal or out of range.