Emerson PACSystems RX3i - Serial Cable Lengths and Shielding; Serial Port Baud Rates

PACSystems™ RX3i and RSTi-EP CPU Reference Manual Section 5
GFK-2222AK October 2019
Communications 131
5.2.5 Serial Cable Lengths and Shielding
The connection from a CPU serial port to the serial port on a computer or other serial
device requires a serial cable. Maximum cable lengths (the total distance from the CPU to
the last device attached to the serial cable) are:
Port
Maximum Cable
Length
Cable Type
COM1 (RS-232)
15 m (50 ft.)
Shielded cable required for RX3i
Note: For details on conformance to radiated emissions standards, refer to Appendix A in
the following manuals:
PACSystems RX3i System Manual, GFK-2314
5.2.6 Serial Port Baud Rates
Protocol
COM1
(RS-232)
COM2
(RS-485)
Station Manager -
COM3 (RS-232)
RTU Slave
1200, 2400, 4800,
9600, 19.2K, 38.4K,
57.6K, 115.2K
1200, 2400, 4800,
9600, 19.2K,
38.4K, 57.6K,
115.2K
not supported
Firmware
Upgrade via
WinLoader
1200, 2400, 4800,
9600, 19.2K, 38.4K,
57.6K, 115.2K
Not supported
not supported
Message Mode
1200, 2400, 4800,
9600, 19.2K, 38.4K,
57.6K, 115.2K
1200, 2400, 4800,
9600, 19.2K,
38.4K, 57.6K,
115.2K
not supported
SNP Slave
1200, 2400, 4800,
9600, 19.2K, 38.4K,
57.6K, 115.2K
1200, 2400, 4800,
9600, 19.2K,
38.4K, 57.6K,
115.2K
not supported
Serial I/O
1200, 2400, 4800,
9600, 19.2K, 38.4K,
57.6K, 115.2K
1200, 2400, 4800,
9600, 19.2K,
38.4K, 57.6K,
115.2K
not supported