Table 27 Pin-Out for 17-Pin M23 Connector
Pin
Description
RS-232
RS-422
RS-485
SDI-12
1
Operating Power Supply
2
Analog output AOUT2, Wind Direction
3
COM2
RS232Rx
Rx–
Rx–
-
4
RS232Tx
Tx–
Tx–
Data
5
Heater Power Supply
6
Heater Power Supply
7
Heater Power Supply Ground
8
Heater Power Supply Ground
9
COM1 (Service
Port)
RS-485-
10
COM1 and COM2 Communication Ports Ground
11
Operating Power Supply Ground
12
Analog Output Ground
13
Analog Output AOUT1, Wind Speed
14
COM2
-
Tx+
Tx+
-
15
-
Rx+
Rx+
-
16
COM1 (Service
port)
RS-485+
17
Reference Input for AOUT2 (simulated potentiometer)
Shield
Enclosure Ground
4.10 Powering
WMT700 has separate power supply inputs for operating and heating power. The inputs are
usually connected to the same 24 VDC power supply unit, but special applications such as
battery operation or battery back-up may require separate supplies.
The operating power has one supply terminal and one ground terminal, while the heating
power has two supply terminals and two ground terminals allowing a higher supply current.
All supply ground terminals are internally connected to each other.
In a system setup with two separate power supplies, avoid ground potential differences
between the supplies. Connect the negative terminals together if necessary.
WMT700 User Guide
M211095EN-H
76
Summary of Contents for WINDCAP WMT700 Series
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