Emerson Rosemount 700XA Reference Manual page 169

Reference Manual
2-3-9000-744
12. To enable line termination for a serial port, set the appropriate port switch on SW10
13. Replace the Base I/O board in the card cage.
14. Consult
Table 5-2: Port configurations
The first column lists the port number; the first row lists the communications mode. The table cell at which the desired
port and the desired mode intersect contains the appropriate wiring for that configuration.
RS232
Port 0
Port 1
Port 1
Port 2
Rosemount 700XA
Note
Ordinarily SW12 should never be adjusted. It is used by the factory for testing
purposes. If it was somehow set to the top, be sure to return it to its factory-set
position, which is the down position.
to the bottom position.
Table 5-2, which shows the correct termination block wiring for each mode
and port.
RS422 (full duplex/4-wire)
N/A
Operation and maintenance
June 2022
RS485 (half duplex/2-wire)
N/A
169