User Guide M211095en-h



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Power Supply
Wire Colors
Pin
Operating Power Supply
White
1
Operating Power Supply Ground
Gray-Pink
11
Heater Power Supply
Gray, Green, Pink, Heater Power Supply Ground
Blue, Black, Red, Yellow, Enclosure Ground
Shield
Shield
COM2
RS -
Brown
3,4
RS485 +
Red-Blue
14, Communications Ground
Violet
10 4.9.5 Connector Signals
The following figure and table show the pin-out of the pin M connector. The serial output type of COM depends on the sensor configuration. Analog outputs are always available from the connector.
Figure 31 Pins for Pin M Connector
Chapter 4 – Installation
75

Table 27 Pin-Out for Pin M 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 COM 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 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 backup 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

Some DC power supplies are based on a chopper circuit that operates at a 100 kHz frequency. Avoid using such power supplies with WMT700. The measurement can be distorted by the ripple in the DC output Operating Power
WMT700 can use any 9 ... 36 V (nominal voltage 24 V) minimum 2 W DC power supply that meets applicable safety regulations. Connect heating supply wires to the ground in case heating is not used. The typical current and power consumptions vs. operating voltage are shown in the following figures. Note that the selected heating option affects the needed operation voltage when separate powering for operation and heating is used.
Do not use a DC power supply based on a chopper circuit that operates at 100 kHz. The ripple in the DC output can distort the measurement.
Table 28 Operating Power Supply Voltage Requirements


Document code
Testsetup according to
More information
Optiontemperature range
Optionheating
Optionhardware interface
Optionunit used
Optionoutput configuration
Selectionoutput configuration
Optionadapter type
Optionaccessories
Order codedescription
Aout1 selected option
Output signal
Swnddiroffset,(angle)
Parameterdefinition
Power supplywire colors
Used heating option
Heating option
Wire type/cable length
Descriptionspare part item
Wmt700connector pin
Open commandto activate the command, press enter
Commanddescription
Wind_getfetches wind calibration information.more information
S command. power must be on for at least 5 seconds after the s
Startcommand.more information
Itemdescription
Bitdescription
G command to fetch the current wmt700 parameters. disable error messages with the command s messages,0
Errors. if all values are valid, wmt700 sends the following response:0,0,0,0you can also use the g
Data message number
Ws425 and sdi messages
Parametername
Parameterdefault
Start command.to stop measurement, use the stop
Wb,wfirmware
Wf output:wff6785672109876.5432.1k99xx5.21.2 ws425 f/g asos data messagewmt700 responds to the wa
Bytedescription
Parameterdefault value
Id character
Wx command with a character fixed-length data message.character
Start command. to stop measurement, use thestop
Problemprobable cause
Error/eventcode
Parameter name
Propertydescription/value
Analog outputs for wind direction
Itemorder code
Configuration mode / measurement
Settingparameter
Start command. you can stop the measurement with the stop
Example of the command and response:
Baud........................................................................ 105clearerr
S............................................................................... 103sleep
Gget message. get parameter.........................................................104h
Jjunction box...............................................................28l



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