GE C70 Instruction Manual page 159

5 SETTINGS
The tables outline the information displayed when the two submenus are selected.
Table 5–4: ROUTING TABLE INFORMATION
FIELD DESCRIPTION
Destination The IP address of the remote network to which this route points
Mask The network mask for the destination
Gateway The IP address of the next router to the remote network
Interface Interface through which the specified network can be reached
Table 5–5: IP ARP INFORMATION
FIELD DESCRIPTION
IP Address The network address that corresponds to Hardware Address
Age (min) Age, in minutes, of the cache entry. A hyphen (-) means the address is local.
Hardware Address LAN hardware address, a MAC address that corresponds to network address
Type Dynamic or Static
Interface Interface to which this address mapping has been assigned
h) 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 60870-5-103
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 C70 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
C70 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) PROTOCOL
The Protocol menu setting allows selection of one of the following protocols: DNP 3.0, IEC60870-104, or IEC60870-103.
For any change to take effect, restart the unit.
GE Multilin
 
COMMUNICATIONS MODBUS PROTOCOL
MODBUS SLAVE
ADDRESS: 254
MODBUS TCP PORT
NUMBER: 502
MODBUS SLAVE ADDRESS
MODBUS TCP PORT NUMBER
C70 Capacitor Bank Protection and Control System
Range: 0 to 254 in steps of 1
Range: 0 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
5.2 PRODUCT SETUP
5
pro-
is set
MODBUS TCP
of 0 disables Modbus
5-35