36
Normal Application Data Packet
Packet Length: 18 bytes (Including two Checksum bytes)
Byte
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
SOM
LEN
DEV
SN
OPC TNI
TST
WP
VCO
BAT
TEMP
CHK
DEC
NOTES
SOM = START OF MESSAGE
64
LEN = LENGTH OF MESSAGE 18
DEV = DEVICE TYPE
19,20
A-1519 = 19 DEC
SN= SERIAL NUMBER
00001TO 65535
OPC=OPERATIONAL STATUS CODE 0,3
0=UNCALIBRATED, 3=CALIBRATED
TNI=TARGET NETWORK ID
1 TO 99
FROM EXTERNAL DIP SWITCHES
TST=TARGET STATUS
0 TO 255
(See TST Information, Page 38)
VP = VERTICAL POSITION, COUNTS -32768 TO 32767
1µm = 2 COUNTS (A-1519)
‘’
1µm = 4 COUNTS (A-1520)
VCO= SENSOR CENTER OFFSET
-4000 TO 4000
1µm = 2 COUNTS (A-1519)
‘’
1µm = 4 COUNTS (A-1520)
BAT=BATTERY VOLTAGE 0 TO 5000
MILLIVOLTS
TEMP=INTERNAL TEMPERATURE (COUNTS) -160 TO 800
1 COUNT=1/16ºC
CHK=PACKET CHECKSUM
Notes:
Two byte (integer) values (for example, SN, CHK) are in least significant byte, most significant byte
order. For example, Byte 4 = 57 (39 HEX), Byte 5 = 48 (30 HEX), then SN = 12345 (3039 HEX).
VCO = Mechanical offset between the sensor’s electrical center and the target’s mechanical center. For
factory use only.
CHK (Checksum) = Two’s complement (negation) of the sum of bytes 1 to 16