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Modbus Plus Expansion Board Catalog No. EXB015A01
D4
D3
D2
DB9
Connector
Pin
Description
1
Chassis Ground
2
TxA
3
TxB
D1 Modbus Plus Status LED
4-2 Hardware Setup
Figure 4-1 Board Configuration
D5 Power LED
PB1 Reset switch (Processor only)
To reset the board, turn control off then on
(cycle power).
D2 Error LED
D3 Status LED
D4 Status LED
All switches shown in ON (Down) position.
ON
1 2 3 4 5 6 7 8
Circuit Board
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