Optical Scientific Inc
OFS 2000CW User’s Guide
P/N 1910-905
Rev. 03/28/13
43
5.2 "C" Poll (Long Data String) Format
Format:
W
,
w
w
w
w
w
,
u
u
u
,
A
,
a
a
a
a
,
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Byte:
1
2
3
4
5
6
7
8
9
10 11 12 13 14 15 16
17
18
19
Format:
B
,
b
b
b
b
,
S
,
s
s
s
s
,
R
,
r
r
r
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Byte:
20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35
36
37
38
Format:
,
I
,
i
i
i
i
,
V
,
v
v
v
v
v
,
T
,
t
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Byte:
39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54
55
56
57
Format:
t
t
,
P
,
p
p
p
p
,
K
,
k
k
k
k
k
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Byte:
58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73
74
5.2.1
“C” Poll Response Bytes
Byte
Description
Field
Symbol
Details
1
Wind Indicator
W
Fixed Field
– Velocity
2
,
Comma delimiter
3-7
Wind Data
wwwww
Represents air velocity expressed in units of measure
selected by customer
8
,
Comma delimiter
9-11
Unit of Measure
uuu
User selected units of measure such as m/s or fps
12
,
Comma delimiter
13
Detector “A”
A
Fixed Field
– Detector A Signal Strength
14
,
Comma delimiter
15-18
Carrier Level
aaaa
Represents detector “A” carrier strength in volts from
0.10 to 9.99 volts
19
,
Comma delimiter
20
Detector “B”
B
Fixed Field
– Detector B Signal Strength
21
,
Comma delimiter
22-25
Carrier Level
bbbb
Represents detector “B” carrier strength in volts from
0.10 to 9.99 volts
26
,
Comma delimiter
27
System Status
S
Fixed Field
– Status Codes
28
,
Comma delimiter
29-32
Status Indicator
ssss
OFS status indicators (as described in section below)
33
,
Comma delimiter
34
Correlation
R
Fixed Field - A & B Signal Correlation
35
,
Comma delimiter
36-38
rrr
Signal correlation, >30 typical
39
,
Comma delimiter
40
I
Fixed Field - Signal Index
41
,
Comma delimiter
42-45
iiii
0 to 9999
46
,
Comma delimiter
47
Volumetric Flow
V
Fixed Field - Volumetric Flow
48
,
Comma delimiter
49-53
vvvvv
k SCFM or k SCMH (SI unit or Imperial unit)
54
,
Comma delimiter
55
Temperature
T
Fixed Field - Temperature
56
,
Comma delimiter
57-59
ttt
Temp in °C or °F ( - 40 to +500 C or -40 to 932 F)
60
,
Comma delimiter
