The WMT900 is a device designed to transport Modbus RTUcommunication data over short to extended ranges using the 900
MHz frequency (902-928). The WMT900 is designed to be plug-and-play, requiring no special programming
simple software tool (provided) radios can be addressed to one another in the field. See below for installation instructions and
configuration.
Antenna
RPSMA Connector
PWR
Power LED
Link
Link between Server/Client
RX
Receive Indicator
TX
Transmit indicator
Dip Switch WMT900 settings (see installation instructions)
Channel
Channel Indicator
Signal Str.
Signal Quality Indicator—Red to Green (0-100%)
Modbus in Three wire Modbus RTU termination
PWR
12-24VAC/DC * see Warning
GND
12-24VAC/DC * see Warning
INSTALLATION INSTRUCTIONS:
1. Connect Modbus RTU bus as labeled in the above diagram.
2. Connect 12-24 VAC/DC power as labeled in the above diagram.
3. Red power Led should light up.
4. Adjust dip switch for desired operation.
5. Perform a local download on the remote Modbus RTU site.
6. Verify the Rf network communication with the Signal Strength, TX, RX, and Link led indicators.
7. Lastly, perform a commission at the base station site to establish the link with the remote location.
Note: As with any Rf network, plan ahead for antenna location and placement. It is the intention of AIC Wireless to provide a
reliable wireless communication device for existing Modbus RTU networks. However, in some conditions, reliability is deter-
mined largely by correct antenna placement, which is the responsibility of the installer. Using good judgment in antenna place-
ment will help decrease service related issues and increase reliability. This product is NOT TO BE USED in situations where life
safety issues may arise. AIC Wireless makes no claims, expressed or implied, of the products usefulness with regard to spe-
cific applications. Determination of the product's suitability for an application is the sole responsibility of the purchasing par-
ties. In any installation application, ensure devices are properly protected from the elements by installing in appropriate enclo-
sure. Additional surge protection devices may be necessary to protect from lightning/power surges.
Designed and Engineered by AIC, LLC/AIC Wireless
Sylvester, Georgia 31791
US Patent Pending #60/834,471
No reproduction without expressed written consent of AIC, LLC
WMT900
RJ45 Conn.
Modbus
Ant. Conn.
PWR Link
RX
TX
Operating Voltage: 12-24 VAC/DC (not polarity sensitive)
Power Consumption at Max Power: 1.2A @ 12VAC/DC
* WARNING: If using AC power option, 24 VAC isolation transformer must
be used! Ensure neither of the two secondaries are bonded.
tools.
Dip Switches
PWR 12-24 VAC/DC
Channel No.
Signal Strength
Using a
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