Gill WindObserver 65 - Appendix D - Networking

47
gillinstruments.com
Issue: 8 (Applies to firmware 2387 6.09 onwards)
Document number: 1390-PS-0039
Ultrasonic Anemometer
Appendix D - Networking
Before coupling units into a network:
• Each device must be configured with a unique Unit Identifier (letter A to Z) however in multi drop systems
it could be advised to avoid using letters A-F, KMN and P as they could appear in the data string.
• Unit must be set for half duplex mode (E2 setting) see Half Duplex Operation (page 48 ).
• I
t must be configured to a tri-state polled mode M3 or M4.
See also Appendix F - Configuring
WindObserver 65
Converter, PC, or
Logger
Signal
Names
19 Way
Connector
Cable Gland
RS485 2 wire
Pin No.
Pair No
Colour
Signal Names
TXB (+)
P
1
Green
RXB (+)
U
2
White
T/RXB (+)
TXA (-)
C
1
Black
T/RXA (-)
RXA (-)
V
2
Black
Digital 0v
M
4
Blue
Signal Ground
Connected Internally
Ground Earth
Sensor +
R
3
Red
+ve Sensor
Sensor -
D
3
Black
-ve PSU *
Heater +
A
5
Yellow
+ Heater
Heater -
B
5
Black
- PSU *
*
For Power Supply Information see Appendix A.
Each unit in the network will require its own power supplies.
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