ABB REF615 F - Page 868

Table 678: 2-wire EIA-485 jumper connectors for COM2
Group Jumper connection Description
X13 1-2
2-3
A+ bias enabled
A+ bias disabled
X14 1-2
2-3
B- bias enabled
B- bias disabled
X15 1-2
2-3
Bus termination enabled
Bus termination disabled
Table 679: 4-wire EIA-485 jumper connectors for COM2
Group Jumper connection Description Notes
X13 1-2
2-3
A+ bias enabled
A+ bias disabled
COM2
4-wire TX channel
X14 1-2
2-3
B- bias enabled
B- bias disabled
X15 1-2
2-3
Bus termination
enabled
Bus termination
disabled
X16 1-2
2-3
Bus termination
enabled
Bus termination
disabled
4-wire RX channel
X17 1-2
2-3
A+ bias enabled
A+ bias disabled
X18 1-2
2-3
B- bias enabled
B- bias disabled
Table 680: X12 Optical ST connection
Group
Jumper connection Description
X3 1-2
2-3
Star topology
Loop topology
X24 1-2
2-3
Idle state = Light on
Idle state = Light off
Table 681: EIA-232 connections for COM0023 (X6)
Pin
EIA-232
1 DCD
2 RxD
3 TxD
4 DTR
5 AGND
6 -
7 RTS
8 CTS
Section 13 1YHT530004D05 D
IED physical connections
862 615 series
Technical Manual