CIRCUTOR QNA-P Series - Manual (Page 33)

Page no. 32
C. Appendix: Communications via TCP-IP converter.
The QNA may also be connected to a PC via an ETHERNET system.
In order to configure this, CIRCUTOR S.A. has a TCP-IP / RS 232-485
converter that allows any piece of equipment with RS-232 or RS-485 communication
to be connected to a PC via an ETHERNET system.
To set the converter so that it converts the signal to RS-485, use the switch on
the converter itself. Check that the cable joining the QNA-412 with the TCP/IP
converter respects the Tx/Rx connection.
TCP/IP
QNA-412 TCP/IP Converter
3 A (+)
2 B (-)
6 S (GND)
TCP/IP CONVERTER