Emerson Rosemount 700XA Reference Manual page 165

Reference Manual
2-3-9000-744
Change the line drivers
The following table lists the relevant traits of the gas chromatograph's (GC's) serial ports.
Port name
Port 0
Port 1
Port 2
Port 3 (DB9 connector)
Note
You can use Port 3 to connect directly to the personal computer (PC).
WARNING
Explosion
Failure to de-energize the analyzer may cause an explosion and severely injure personnel.
Before opening the analyzer, disconnect all electrical power and ensure that the area is
free of explosive gases.
Keep cover tight while circuits are live.
Use cables or wires suitable for the marked "T" ratings.
Cover joints must be cleaned before replacing the cover.
Conduit runs to the enclosure must have sealing fitting adjacent to enclosure.
WARNING
Burns
Some parts of the analyzer may be heated to 248 °F (120 °C).
To prevent burns, do not touch any of the hot parts. All parts of an analyzer are always hot
unless it has been switched off and allowed to cool down.
Before fitting, removing, or performing any maintenance on the analyzer, make sure
that it has been switched off and allowed to cool for at least two hours.
When handling the analyzer, always use suitable protective gloves.
These precautions are particularly important when working at heights.
If burned, seek medical treatment immediately.
The factory setting for each port is RS232. To change the setting of a serial portL
Rosemount 700XA
Port mode
RS232
RS422, RS485
RS232
RS422, RS485
RS232
RS422, RS485
RS232
Terminal block location on
the backplane
TB1
TB2
TB5
TB6
TB8
TB9
J23 (Laptop-PC)
Operation and maintenance
June 2022
Communication modes
supported
®
Modbus ASCII/RTU
®
Modbus ASCII/RTU
Direct connection through
Rosemount MON2020
165