INTERFACE SPECIFICATIONS
4th byte
Bit
7
Indicates the
0000: Older series (CD16, CD162)
model number
6
0001: X-CD163 series
using 1 bit.
5
4
3
Spare
2
Spot monitor
1: Spot monitor operating
operation
1
Indicates the
00: 1
number of spot
0
01: 2
monitors using 2
10: 3
bits
11: 4
ALARM STATUS SENSE (D5)
Returns the multiplexer external alarm status (Table 2) using 6
bytes
RXD
D5
TXD
d1
d2
ALARM STATUS SENSE (D5) bit allocation (Table 2)
1st byte
Bit
7
ALARM 8 ON
6
ALARM 7 ON
5
ALARM 6 ON
4
ALARM 5 ON
3
ALARM 4 ON
2
ALARM 3 ON
1
ALARM 2 ON
0
ALARM 1 ON
3rd byte
Bit
7
SENSOR 8 ON
6
SENSOR 7 ON
5
SENSOR 6 ON
4
SENSOR 5 ON
3
SENSOR 4 ON
2
SENSOR 3 ON
1
SENSOR 2 ON
0
SENSOR 1 ON
5th byte
Bit
7
VIDEO LOSS 8 ON
6
VIDEO LOSS 7 ON
5
VIDEO LOSS 6 ON
4
VIDEO LOSS 5 ON
3
VIDEO LOSS 4 ON
2
VIDEO LOSS 3 ON
1
VIDEO LOSS 2 ON
0
VIDEO LOSS 1 ON
*: Command for MPX-CD163 only
Bit details
d3
d4
d5
d6
2nd byte
Bit
7
ALARM 16 ON*
6
ALARM 15 ON*
5
ALARM 14 ON*
4
ALARM 13 ON*
3
ALARM 12 ON*
2
ALARM 11 ON*
1
ALARM 10 ON*
0
ALARM 9 ON*
4th byte
Bit
7
SENSOR 16 ON*
6
SENSOR 15 ON*
5
SENSOR 14 ON*
4
SENSOR 13 ON*
3
SENSOR 12 ON*
2
SENSOR 11 ON*
1
SENSOR 10 ON*
0
SENSOR 9 ON*
6th byte
Bit
7
VIDEO LOSS 16 ON*
6
VIDEO LOSS 15 ON*
5
VIDEO LOSS 14 ON*
4
VIDEO LOSS 13 ON*
3
VIDEO LOSS 12 ON*
2
VIDEO LOSS 11 ON*
1
VIDEO LOSS 10 ON*
0
VIDEO LOSS 9 ON*
Multiplexer commands
ACK (0A)
Returned when the multiplexer receives a command.
NAK (0B)
Returned when the multiplexer does not receive a command.
ALARM (BF)
When there is alarm input, an ALARM command is sent as a
header, and after this the alarm data (Table 3) is sent using 1
byte.
Alarm data (Table 3)
Bit
7
Indicates the type of alarm
using 2 bits
6
5
Spare
4
Spare
3
Indicates the camera
number using 4 bits
2
1
0
*: Command for MPX-CD163 only
– 78 –
Bit details
00: No alarm input
01: External
10: Video loss
11: Motion sensor alarm
0
0
0000: Channel 1
0001: Channel 2
0010: Channel 3
0011: Channel 4
0100: Channel 5
0101: Channel 6
0110: Channel 7
0111: Channel 8
1000: Channel 9
1001: Channel 10*
1010: Channel 11*
1011: Channel 12*
1100: Channel 13*
1101: Channel 14*
1110: Channel 15*
1111: Channel 16*
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