ADS Environmental Services ADS TRITON+ QR 775027 A3 - Manual (Page 314)

Modbus 9-9
Note: Refer to the manufacturer’s documentation for the
device to which you are connecting the ExPAC to
determine the appropriate pin-out for the RS-232 input
connector on the device end of the cable (similar to the
table above).
Note: If the DTR input is not available/supported on the
device, connect the RTS output to pin 7 and pin 4 as well
to ensure the ExPAC DTR input is activated and
communications are enabled. The TRITON+ monitor
connected to the ExPAC will not operate if the DTR or the
DCD lines are not activated.
Setting Up a Wireless Connection
Establishing a wireless Modbus connection enables the TRITON+
to provide the updated Modbus registers to the SCADA or process
control system.
Consider the following when using a wireless connection:
• While not required, ADS strongly recommends powering the
TRITON+ for any continuous Modbus communications
through an external source using an ExPAC or XBUS.
• Establishing wireless TCP/IP communication may take several
minutes. Therefore, consider this initial delay in
communication when setting up the host program.
• Verify that the monitor has been configured for Modbus output
through Qstart with a wireless connection type and the proper
IP address for the monitor.
• Verify that the process control system has the proper Modbus
slave ID, is configured for wireless TCP communication, and
has the correct IP address for the TRITON+.
• Once both systems are configured and activated, verify that the
process control system is receiving the appropriate Modbus
register values.