GE t60 Instruction Manual page 148

5.2 PRODUCT SETUP
PATH: SETTINGS PRODUCT SETUP
SERIAL PORTS
5
It is important that the baud rate and parity settings agree with the settings used on the computer or other equipment that is
connected to these ports.
The RS485 ports may be connected to a computer running EnerVista UR Setup. This software can download and upload
setting files, view measured parameters, and upgrade the relay firmware. A maximum of 32 relays can be daisy-chained
and connected to a DCS, PLC or PC using the RS485 ports.
The baud rate for standard RS485 communications can be selected as 300, 1200, 2400, 4800, 9600, 14400, 19200,
28800, 33600, 38400, 57600, or 115200 bps.
For each RS485 port, the minimum time before the port will transmit after receiving data from a host can be
set. This feature allows operation with hosts which hold the RS485 transmitter active for some time after
NOTE
each transmission.
If the
RS485 COM2 USAGE
remote RTD unit uses the Modbus RTU protocol over RS485. The RRTD device must have a unique address from 1 to
254. The baud rate for RRTD communications can be selected as 300, 1200, 2400, 4800, 9600, 14400, or 19200 bps.
If the RS485 COM2 port is used for an RRTD, then there must not be any other devices connected in the daisy-chain for
any other purpose. The port is strictly dedicated to RRTD usage when
Power must be cycled to the T60 for changes to the
NOTE
5-16
COMMUNICATIONS
RS485 COM1 BAUD
RATE: 19200
RS485 COM1 PARITY:
MESSAGE
None
RS485 COM1 RESPONSE
MESSAGE
MIN TIME:
COM2 USAGE:
MESSAGE
RS485
RRTD SLAVE ADDRESS:
MESSAGE
254
RS485 COM2 BAUD
MESSAGE
RATE: 19200
RRTD BAUD RATE:
MESSAGE
19200
RS485 COM2 PARITY:
MESSAGE
None
RS485 COM2 RESPONSE
MESSAGE
MIN TIME:
setting is "RRTD", then the COM2 port is used to monitor the RTDs on a remote RTD unit. The
T60 Transformer Protection System
SERIAL PORTS
Range: 300, 1200, 2400, 4800, 9600, 14400, 19200,
28800, 33600, 38400, 57600, 115200. Only
active if CPU Type E is ordered.
Range: None, Odd, Even
Only active if CPU Type E is ordered
Range: 0 to 1000 ms in steps of 10
Only active if CPU Type E is ordered
0 ms
Range: RS485, RRTD
Range: 1 to 254 in steps of 1. Shown only if the COM2
USAGE setting is "RRTD".
Range: 300, 1200, 2400, 4800, 9600, 14400, 19200,
28800, 33600, 38400, 57600, 115200. Shown
only if the COM2 USAGE is setting is "RS485".
Range: 1200, 2400, 4800, 9600, 19200. Shown only if
the COM2 USAGE is setting is "RRTD".
Range: None, Odd, Even.
Range: 0 to 1000 ms in steps of 10.
0 ms
RS485 COM2 USAGE
setting to take effect.
RS485 COM2 USAGE
5 SETTINGS
is selected as "RRTD".
GE Multilin