GE L60 Instruction Manual page 151

5 SETTINGS
b) SERIAL PORTS
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PATH: SETTINGS PRODUCT SETUP
 SERIAL PORTS

MESSAGE
MESSAGE
The L60 is equipped with two independent serial communication ports. The faceplate RS232 port is intended for local use
and is fixed at 19200 baud and no parity. The rear COM2 port is RS485. The RS485 port has settings for baud rate and par-
ity. It is important that these parameters agree with the settings used on the computer or other equipment that is connected
to these ports. Any of these ports can be connected to a computer running EnerVista UR Setup. This software can down-
load and upload setting 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 computer using the RS485 ports.
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
c) ETHERNET NETWORK TOPOLOGY
The three independent UR ports do not have routing capability and work only on local subnets for the switched network
topology. End nodes can communicate with each other using all supported protocols of the UR family on a local network. In
a routed network, it is recommended to upgrade the UR device used to 7.1x or higher where routing capability through
static route settings has been introduced.
When using more than one Ethernet port, configure each to belong to a different network or subnet using the IP addresses
and mask, else 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)
Example 3 — Incorrect
IP1/Mask1: 10.1.1.2/255.0.0.0
IP2/Mask2: 10.2.1.2/255.0.0.0
IP3/Mask3: 10.3.1.2/255.0.0.0
This example is incorrect because the mask of 255.0.0.0 used for the three IP addresses makes them belong to the same
network of 10.x.x.x.
GE Multilin
 
COMMUNICATIONS SERIAL PORTS
RS485 COM2 BAUD
RATE: 19200
RS485 COM2 PARITY:
None
RS485 COM2 RESPONSE
MIN TIME: 0 ms
L60 Line Phase Comparison System
5.2 PRODUCT SETUP
Range: 300, 1200, 2400, 4800, 9600, 14400, 19200,
28800, 33600, 38400, 57600, 115200
Range: None, Odd, Even
Range: 0 to 1000 ms in steps of 10
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