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RS232C CONTROL
INFORMATION GATHERING COMMANDS
STATUS SENSE(D7)
When this command is sent from the computer, this unit will
send a 5-byte response (see Table 1).
RXD
D7
TXD
d1
STATUS SENSE(D7) byte assignment (Table 1)
The third, fourth and fifth bytes are reserved.
First byte
Bit
Bit state information
7
LIVE/VCR indication
0: LIVE picture mode
1: VCR playback mode
6
3-bit indication of the
000:
display mode
5
001:
4
010:
3
4-bit indication of the
(Full screen mode)
channels and quad
2
0000: Channel 1
screen displayed
1
0001: Channel 2
0
0010: Channel 3
0011: Channel 4
0100: Channel 5
0101: Channel 6
0110: Channel 7
0111: Channel 8
(Quad screen)
0000: Quad screen A (1, 2, 3, 4)
0001: Quad screen B (5, 6, 7, 8)
(Menu display)
0000: Menu 1 (LANGUAGE/LANG./IDIO.)
0001: Menu 2 (CLOCK SET)
0010: Menu 3 (TITLE SET)
0011: Menu 4 (ALARM SET)
0100: Menu 5 (VIDEO SENSOR SET)
0101: Menu 6 (TIMER SET)
0110: Menu 7 (DISPLAY SET)
0111: Menu 8 (VCR SET)
1111: Menu 9 (ALARM DATA)
Second byte
Bit
Bit state information
7
EXT/ALARM
EXTERNAL ALARM is ON
indication
6
VIDEO LOSS
VIDEO LOSS is ON
indication
5
SENSOR indication
SENSOR is ON
4
Reserved
0
3
4-bit indication of the
0000: Normal display mode
display mode
2
0001: Sequential display mode
1
0010: Zoomed in mode
0
0011: Still image mode
0100: Frozen zoomed in image
0101: Zoomed in still image
0110: Zoom range setting mode
0111: Zoomed in still image range setting
English
d2
d3
d4
d5
Full screen
Quad screen
Menu display
mode
ALARM STATUS SENSE(D5)
The external, video loss and video sensor alarm states are
indicated by a 6-byte response (see Table 2).
RXD
D5
TXD
d1
ALARM STATUS SENSE(D5) byte assignment
(Table 2)
First byte
Bit
7
ALARM ON 8
6
ALARM ON 7
5
ALARM ON 6
4
ALARM ON 5
3
ALARM ON 4
2
ALARM ON 3
1
ALARM ON 2
0
ALARM ON 1
Third byte
Bit
7
SENSOR 8
6
SENSOR 7
5
SENSOR 6
4
SENSOR 5
3
SENSOR 4
2
SENSOR 3
1
SENSOR 2
0
SENSOR 1
Fifth byte
Bit
7
VIDEO LOSS 8
6
VIDEO LOSS 7
5
VIDEO LOSS 6
4
VIDEO LOSS 5
3
VIDEO LOSS 4
2
VIDEO LOSS 3
1
VIDEO LOSS 2
0
VIDEO LOSS 1
29
d2
d3
d4
d5
d6
Second byte
Bit
7
0
6
0
5
0
4
0
3
0
2
0
1
0
0
0
Fourth byte
Bit
7
0
6
0
5
0
4
0
3
0
2
0
1
0
0
0
Sixth byte
Bit
7
0
6
0
5
0
4
0
3
0
2
0
1
0
0
0
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