Ethernet Network Topology - GE T60 Instruction Manual

5.2 PRODUCT SETUP
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PATH: SETTINGS
 SERIAL PORTS
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5
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 set-
ting files, view measured parameters, and upgrade the relay firmware. A maximum of 32 relays can be daisy-chained and
connected to a DCS, PLC or PC 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 which hold the RS485 transmitter active for some time after each transmission.
NOTE
If the
COM2 USAGE
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
Power must be cycled to the T60 for changes to the
NOTE
c) ETHERNET NETWORK TOPOLOGY
The T60 has three Ethernet ports. Each Ethernet port must belong to a different network or subnetwork. Configure the IP
address and subnet to ensure that each port meets this requirement. Two subnets are different when the bitwise AND oper-
ation performed between their respective IP address and mask produces a different result. Communication becomes
unpredictable when more than one port is configured to the same subnet.
Example 1
IP1/Mask1: 10.1.1.2/255.255.255.0 (where LAN 1 is 10.1.1.x/255.255.255.0)
IP2/Mask2: 10.2.1.2/255.255.255.0 (where LAN2 is 10.2.1.x/255.255.255.0)
IP3/Mask3: 10.3.1.2/255.255.255.0 (where LAN3 is 10.3.1.x/255.255.255.0)
Example 2
IP1/Mask1: 10.1.1.2/255.0.0.0 (where LAN1 is 10.x.x.x/255.0.0.0)
IP2/Mask2: 11.1.1.2/255.0.0.0 (where LAN2 is 11.x.x.x/255.0.0.0)
IP3/Mask3: 12.1.1.2/255.0.0.0 (where LAN3 is 12.x.x.x/255.0.0.0)
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PRODUCT SETUP COMMUNICATIONS
COM2 USAGE:
RS485
RRTD SLAVE ADDRESS:
MESSAGE
254
RS485 COM2 BAUD
MESSAGE
RATE: 19200
RRTD BAUD RATE:
MESSAGE
19200
RS485 COM2 PARITY:
MESSAGE
None
RS485 COM2 RESPONSE
MESSAGE
MIN TIME:
setting is "RRTD", then the COM2 port is used to monitor the RTDs on a remote RTD unit. The remote
T60 Transformer Protection System
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SERIAL PORTS
Range: RS485, RRTD
Range: 1 to 254 in steps of 1. Shown only if the COM2
USAGE setting is "RRTD".
Range: 300, 1200, 2400, 4800, 9600, 14400, 19200,
28800, 33600, 38400, 57600, 115200. Shown
only if the COM2 USAGE is setting is "RS485".
Range: 1200, 2400, 4800, 9600, 19200. Shown only if
the COM2 USAGE is setting is "RRTD".
Range: None, Odd, Even.
Range: 0 to 1000 ms in steps of 10.
0 ms
is selected as "RRTD".
COM2 USAGE
setting to take effect.
COM2 USAGE
5 SETTINGS
GE Multilin