The sensor will continue to draw power from the existing source. When installed, the existing
communication path is disconnected and communication using the flying lead is forced to
RS-232, 38400 baud with a sensor ID of 0. When the maintenance cable is removed and replaced
with the cable previously used the baud rate and ID will return to those previously set.
Figure 4-5. Maintenance cable
4.7 Storage information
The CS140 should be stored between –40 to 85 °C in a dry place. The optics should be protected
from possible accidental damage.
5. Message structure
Table 5-1: Basic format
STX
Message
ID
Sensor
ID
System
Status
Luminance
Units
Checksum
(CCITT)
ETX
Carriage
return
Line
feed
0x02
0
0
3
35833.7
1
4E7C
0x03
0x0D
0x0A
Example basic format output:
0 0 3 35833.7 1 4E7C
CS140 Background Luminance Sensor
10
