GE t60 Instruction Manual page 146

5.2 PRODUCT SETUP
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 setting is "RRTD", then the COM2 port is used to monitor the RTDs on a remote RTD unit. The remote
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
When using more than one Ethernet port, configure each to belong to a different network or subnet using the IP addresses
and mask.
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)
5
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 belongs to the same network of
10.x.x.x.
5-22
COM2 USAGE
COM2 USAGE
T60 Transformer Protection System
is selected as "RRTD".
setting to take effect.
5 SETTINGS
GE Multilin