GE UR Series L90 Instruction Manual page 167

5 SETTINGS
The serial communication ports utilize the Modbus protocol, unless configured for DNP operation (see descriptions below).
This allows the EnerVista UR Setup software to be used. The UR operates as a Modbus slave device only. When using
Modbus protocol on the RS232 port, the L90 responds regardless of the
RS485 port, each L90 must have a unique address from 1 to 254. Address 0 is the broadcast address which all Modbus
slave devices listen to. Addresses do not have to be sequential, but no two devices can have the same address or conflicts
resulting in errors will occur. Generally, each device added to the link should use the next higher address starting at 1. See
Appendix B for more information on the Modbus protocol.
A value of 0 closes the port. When the Modbus port is set to 0, communicate with the relay using the front panel or serial
port.
When a 0 value is involved in a change, the changes to the MODBUS TCP PORT NUMBER setting take effect
when the L90 is restarted.
NOTE
h) DNP PROTOCOL

PATH: SETTINGS PRODUCT SETUP
 DNP PROTOCOL

MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
GE Multilin
 
COMMUNICATIONS DNP PROTOCOL
 DNP CHANNELS

DNP ADDRESS:
1
 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
DNP CURRENT SCALE
FACTOR: 1
DNP VOLTAGE SCALE
FACTOR: 1
DNP POWER SCALE
FACTOR: 1
DNP ENERGY SCALE
FACTOR: 1
DNP PF SCALE
FACTOR: 1
DNP OTHER SCALE
FACTOR: 1
DNP CURRENT DEFAULT
DEADBAND: 30000
DNP VOLTAGE DEFAULT
DEADBAND: 30000
L90 Line Current Differential System
5.2 PRODUCT SETUP
programmed. For the
MODBUS SLAVE ADDRESS
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
Range: 0.001, 0.01. 0.1, 1, 10, 100, 1000, 10000,
100000
Range: 0 to 100000000 in steps of 1
Range: 0 to 100000000 in steps of 1
5
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