FOR-A MV-1600, Operation Manual

Page: 70 / 88

14
3-4. Alarm Data Request Command
This is used to request the current alarm and video loss data.
Channel numbers are given in hexadecimal.
An [AA] alarm status message is returned after normal reception and processing.
［
AR
］
Request comman
Byte Parameter Command Description
1 A
2
Command code
R
3 CR
4
End code
LF
［
AA
］
Response message
Byte Parameter Message Description
1 A
2
Message code
A
3-6 Alarm information 0000–FFFF
Bit no.0-15
Bit value 0: No alarm
Bit value 1: Alarm received
7-10 Video loss information 0000–000F
Bit no.0
～
3
Bit value 0: No video loss
Bit value 1: Video loss occurring
11 CR
12
End code
LF
Example 1: When alarm inputs are received at CH1, CH11 and CH16, bytes 3–6 are "8401".
Channel no.
CH
16
CH
15
CH
14
CH
13
CH
12
CH
11
CH
10
CH
9
CH
8
CH
7
CH
6
CH
5
CH
4
CH
3
CH
2
CH
1
Bit no. 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Bit value 1 0 0 0 0 1 0 0 0 0 0 0 0 0 0 1
Byte value 8 4 0 1