Comtrol DeviceMaster LT User Manual page 123

DeviceMaster LT User Guide: 2000586 Rev. B
5. Right-click the OPPOSITE window and click Send.
The Status line shows Sending or Receiving. In this case, COM40 is sending
data and COM41 is receiving the data which is visually confirmed by the data
scrolling across the COM41 window.
Note: If you do not see the data being received it MAY be necessary to also
disable the RTS and DTR options from the right-click pop-up menu in
each COM port.
6. Right-click and remove the check mark on the Sending COM port.
7. Right-click and remove the check mark on the Receiving COM port.
Neither COM port is sending or receiving data but shows Ready on the Status
bar.
8. Reverse the sending/receiving windows one at a time. Set the Receive option
first, then in the opposite window, select the Send option.
The Status line shows Sending or Receiving in the reverse windows.
Data is now scrolling in the COM40 window. COM41 is static as it is not receiving
data but transmitting data.
Sending and Receiving Data (RS-485: 2-Wire)
Troubleshooting and Technical Support - 123