GE M60

CHAPTER 5: SETTINGS PRODUCT SETUP
M60 MOTOR PROTECTION SYSTEM – INSTRUCTION MANUAL 5-41
5
5.3.5.2 Serial ports
The M60 is equipped with up to two independent serial communication ports. The faceplate RS232 port is for local use and
is fixed at 19200 baud and no parity. The rear COM2 port is used for either RS485 or RRTD communications.
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 port can 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 distributed control system (DCS), power line carrier (PLC), or a computer 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 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 setting is “RRTD,” 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, 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 COM2 USAGE is selected as “RRTD.”
For changes to the
COM2 USAGE setting to take effect, cycle power to the M60.

 IEC 61850 PROTOCOL

Access in EnerVista
See page 5-55

 WEB SERVER
 HTTP PROTOCOL
See page 5-99

 TFTP PROTOCOL

See page 5-100

 IEC 60870-5-104
 PROTOCOL
See page 5-100

 EGD PROTOCOL

See page 5-102

 IEC103
 PROTOCOL
See page 5-103

 USB 2.0 PORT

See page 5-108
 SERIAL PORTS


COM2 USAGE:
RS485
Range: RS485, RRTD

RRTD SLAVE ADDRESS:
254
Range: 1 to 254 in steps of 1. Shown only if the COM2
USAGE setting is “RRTD.”

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.”

RRTD BAUD RATE:
19200
Range: 1200, 2400, 4800, 9600, 19200. Shown only if
the COM2 USAGE is setting is “RRTD.”

RS485 COM2 PARITY:
None
Range: None, Odd, Even

RS485 COM2 RESPONSE
MIN TIME: 0 ms
Range: 0 to 1000 ms in steps of 10