User Manual

Modbus 9-9

Note: Refer to the manufacturer’s documentation for the

device to which you a re connecting the ExPAC to

determine the appr opriate 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 ExP AC D TR 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 no t a c tivated.

Setting Up a Wire less Connect ion

Establishing a wireless Mo dbus connection enables the TRITON+

to provide the updated Modbus registers to the SC ADA or process

control system.

Consider the following when using a wireless co nnectio n:

• While not required , ADS stro ngly recommends p owering the

TRITON+ for any continuous Modbus communications

thro ugh an exter nal source using an ExPAC or XBUS.

• Establishing wireles s TCP/IP communication may take several

minute s. Therefore, consider this initial delay in

communication when setting up the host pro gram.

• Verify that the monitor has been configured for Modbus output

through Qstart with a wireless co nnection type and the proper

IP address for the monitor.

• Verify that the process control system ha s the proper Modbus

slave ID, is configured for wireless TCP communication, and

has the correct IP address for the TRITON+.

• Once b o th systems are configured and activated, verify that the

process control system is receiving the appropriate Modbus