GE G60 Instruction Manual page 256

PRODUCT SETUP
5.3.5.2 Serial ports
SETTINGS  PRODUCT SETUP  COMMUNICATIONS  SERIAL PORTS
 SERIAL PORTS

5
The G60 is equipped with up to two independent serial communication ports. The faceplate RS232 port is intended for local
use and is fixed at 19200 baud and no parity. The rear COM2 port be used for either RS485 or RRTD communications.
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 port can be connected to a computer running the EnerVista UR Setup software. This software can be used to
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 distributed control system (DCS), power line carrier (PLC), or computer using the
RS485 port.
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
For the RS485 port, the minimum time before the port transmits after receiving data from a host can be set. This
feature allows operation with hosts that hold the RS485 transmitter active for some time after each transmission.
If the
COM2 USAGE
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 1200, 2400, 4800, 9600, 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
connected in the daisy-chain for any other purpose. The port is strictly dedicated to RRTD or GPM-F usage when
is selected as "RRTD only," "GPM-F only," or "RRTD & GPM-F."
USAGE
5-42
 WEB SERVER

 HTTP PROTOCOL
 TFTP PROTOCOL


 IEC 60870-5-104

 PROTOCOL
 EGD PROTOCOL


 IEC103

 PROTOCOL
 USB 2.0 PORT


COM2 USAGE:

RS485
RRTD SLAVE ADDRESS:

254
RS485 COM2 BAUD

RATE: 19200
RRTD BAUD RATE:

19200
RS485 COM2 PARITY:

None
RS485 COM2 RESPONSE

MIN TIME: 0 ms
is fixed at 19200 bps.
setting is "RRTD only", then the COM2 port is used to monitor the RTDs on a remote RTD unit. The remote
See page 5-100
See page 5-101
See page 5-101
See page 5-103
See page 5-104
See page 5-109
Range: RS485, RRTD only, GPM-F only,
RRTD & GPM-F
Range: 1 to 254 in steps of 1. Shown only if the COM2
USAGE setting is "RRTD only" or "RRTD & GPM-F".
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 setting is "RRTD".
Range: None, Odd, Even.
Range: 0 to 1000 ms in steps of 10
G60 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL
CHAPTER 5: SETTINGS
COM2