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GE L60 Instruction Manual Page 155

Line phase comparison system, ur series.
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5 SETTINGS
d) MODBUS PROTOCOL
PATH: SETTINGS
PRODUCT SETUP
 MODBUS PROTOCOL
MESSAGE
The serial communication ports utilize the Modbus protocol, unless the port is configured for DNP or IEC 60870-5-104
operation. This allows the EnerVista UR Setup software to be used on the port. The UR operates as a Modbus slave device
only.
When using Modbus protocol on the RS232 port, the L60 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
L60 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.
e) DNP PROTOCOL
PATH: SETTINGS
PRODUCT SETUP
 DNP PROTOCOL
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
GE Multilin


COMMUNICATIONS
MODBUS PROTOCOL
MODBUS SLAVE
ADDRESS: 254
MODBUS TCP PORT
NUMBER:
502
MODBUS SLAVE ADDRESS
MODBUS TCP PORT NUMBER


COMMUNICATIONS
DNP PROTOCOL
 DNP CHANNELS
DNP ADDRESS:
65519
 DNP NETWORK
 CLIENT ADDRESSES
DNP TCP/UDP PORT
NUMBER: 20000
DNP UNSOL RESPONSE
FUNCTION: Disabled
DNP UNSOL RESPONSE
TIMEOUT: 5 s
DNP UNSOL RESPONSE
MAX RETRIES: 10
DNP UNSOL RESPONSE
DEST ADDRESS: 1
L60 Line Phase Comparison System
Range: 1 to 254 in steps of 1
Range: 1 to 65535 in steps of 1
MODBUS SLAVE ADDRESS
MODBUS SLAVE ADDRESS
value in the Unit Identifier field. See Appendix B for
is set to any other port. The
MODBUS TCP PORT NUMBER
setting take effect when the
MODBUS TCP PORT NUMBER
Range: see sub-menu below
Range: 0 to 65519 in steps of 1
Range: see sub-menu below
Range: 1 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
5.2 PRODUCT SETUP
pro-
is set
MODBUS TCP
5
of 0 disables Modbus
5-17

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