5-16 G60 Generator Protection System GE Multilin
5.2 PRODUCT SETUP 5 SETTINGS
5
PATH: SETTINGS PRODUCT SETUP COMMUNICATIONS SERIAL PORTS
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. If COM2 is used for both a field ground module (GPM-F) and remote RTD
unit (RRTD), then the
RS482 COM2 BAUD RATE is fixed at 19200 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
each transmission.
If the COM2 USAGE setting is “RRTD only”, then the COM2 port is used to monitor the RTDs on a remote RTD unit. The
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, GPM-F, or RRTD and GPM-F, then there must not be any other devices con-
nected in the daisy-chain for any other purpose. The port is strictly dedicated to RRTD or GPM-F usage when
COM2 USAGE
is selected as “RRTD only”, “GPM-F only”, or “RRTD & GPM-F”.
The field ground module (GPM-F) has a fixed slave address of 1. Therefore, the RRTD SLAVE ADDRESS setting is appli-
cable only to the RRTD unit and has a setting rage of 2 to 254 if the
COM2 USAGE is set as “RRTD & GPM-F”.
Power must be cycled to the G60 for changes to the
COM2 USAGE setting to take effect.
SERIAL PORTS
RS485 COM1 BAUD
RATE: 19200
Range: 300, 1200, 2400, 4800, 9600, 14400, 19200,
28800, 33600, 38400, 57600, 115200. Only
active if CPU Type E is ordered.
MESSAGE
RS485 COM1 PARITY:
None
Range: None, Odd, Even
Only active if CPU Type E is ordered
MESSAGE
RS485 COM1 RESPONSE
MIN TIME: 0 ms
Range: 0 to 1000 ms in steps of 10
Only active if CPU Type E is ordered
MESSAGE
COM2 USAGE:
RS485
Range: RS485, RRTD only, GPM-F only,
RRTD & GPM-F
MESSAGE
RRTD SLAVE ADDRESS:
254
Range: 1 to 254 in steps of 1. Shown only if the COM2
USAGE is “RRTD only” or “RRTD & GPM-F”.
MESSAGE
RS485 COM2 BAUD
RATE: 19200
Range: 300, 1200, 2400, 4800, 9600, 14400, 19200,
28800, 33600, 38400, 57600, 115200. Shown
only if the COM2 USAGE is setting is “RS485”.
MESSAGE
RRTD BAUD RATE:
19200
Range: 1200, 2400, 4800, 9600, 19200. Shown only if
the COM2 USAGE is setting is “RRTD”.
MESSAGE
RS485 COM2 PARITY:
None
Range: None, Odd, Even.
MESSAGE
RS485 COM2 RESPONSE
MIN TIME: 0 ms
Range: 0 to 1000 ms in steps of 10
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