GE G60 Instruction Manual page 196

5.2 PRODUCT SETUP
When using Modbus protocol on the RS232 port, the G60 responds regardless of the
grammed. For the RS485 port, each device on the serial bus must have a unique slave address from 1 to 254. Address 0
and addresses from 248 and up are reserved by the Modbus protocol specification, and so their use here is not recom-
mended. Address 0 is the broadcast address that all Modbus slave devices listen to. When
to 0, the UR accepts broadcast messages, but in compliance with protocol specifications for broadcast messages, never
replies. Addresses do not have to be sequential, but no two devices can have the same address or conflicts resulting in
errors occur. Generally, each device added to the link should use the next higher address starting at 1. When using Modbus
TCP/IP, the client must use the programmed
more information on the Modbus protocol.
Modbus over TCP/IP can also be used on any of the Ethernet ports. The listening TCP port 502 is reserved for Modbus
communications, and only in exceptional cases when
setting sets the TCP port used by Modbus on Ethernet. A
PORT NUMBER
over TCP/IP, meaning closes the Modbus TCP port. When it is set to 0, use the front panel or serial port to communicate
with the relay.
When a 0 value is involved in a change, the changes to the
G60 is restarted.
NOTE
Do not set more than one protocol to the same TCP/UDP port number, as this results in unreliable operation of
those protocols.
i) DNP PROTOCOL

PATH: SETTINGS PRODUCT SETUP
 DNP PROTOCOL

5
5-36
MODBUS SLAVE ADDRESS

COMMUNICATIONS
 DNP CHANNELS

DNP ADDRESS:
MESSAGE
1
 DNP NETWORK
MESSAGE
 CLIENT ADDRESSES
DNP TCP/UDP PORT
MESSAGE
NUMBER: 20000
DNP UNSOL RESPONSE
MESSAGE
FUNCTION: Disabled
DNP UNSOL RESPONSE
MESSAGE
TIMEOUT: 5 s
DNP UNSOL RESPONSE
MESSAGE
MAX RETRIES: 10
DNP UNSOL RESPONSE
MESSAGE
DEST ADDRESS: 1
DNP CURRENT SCALE
MESSAGE
FACTOR: 1
DNP VOLTAGE SCALE
MESSAGE
FACTOR: 1
DNP POWER SCALE
MESSAGE
FACTOR: 1
DNP ENERGY SCALE
MESSAGE
FACTOR: 1
DNP PF SCALE
MESSAGE
FACTOR: 1
G60 Generator Protection System
value in the Unit Identifier field. See Appendix B for
is set to any other port. The
MODBUS TCP PORT NUMBER
MODBUS TCP PORT NUMBER
MODBUS TCP PORT NUMBER

DNP PROTOCOL
Range: see sub-menu below
Range: 0 to 65519 in steps of 1
Range: see sub-menu below
Range: 0 to 65535 in steps of 1
Range: Enabled, Disabled
Range: 0 to 60 s in steps of 1
Range: 1 to 255 in steps of 1
Range: 0 to 65519 in steps of 1
Range: 0.001, 0.01. 0.1, 1, 10, 100, 1000, 10000,
100000
Range: 0.001, 0.01. 0.1, 1, 10, 100, 1000, 10000,
100000
Range: 0.001, 0.01. 0.1, 1, 10, 100, 1000, 10000,
100000
Range: 0.001, 0.01. 0.1, 1, 10, 100, 1000, 10000,
100000
Range: 0.001, 0.01. 0.1, 1, 10, 100, 1000, 10000,
100000
5 SETTINGS
pro-
MODBUS SLAVE ADDRESS
is set
MODBUS SLAVE ADDRESS
MODBUS TCP
of 0 disables Modbus
setting take effect when the
GE Multilin