Altera Multiaxis Motor Control Board - Manual (Page 20)

Page 20 Functional Description
Multiaxis Motor Control Board February 2014 Altera Corporation
Encoder RS485
For encoders that use an RS485 interface, configure the data pins for full-duplex
operation with combined TX and RX data or half-duplex operation with separate TX
and RX data. You may configure each channel independently.
Table 11 lists the
jumpers to set for each channel. Table 12 lists the jumper positions for encoder RS485s.
Out means fit no jumper; in means fit a jumper.
Encoder Interface
The Multiaxis Motor Control Board supports RS485, resolver, Hall effect and
quadrature encoders. You can configure each channel independently to support one
of these encoder standards at any one time.
Table 13 lists the jumpers to set for each
channel. Table 14 lists the jumper positions for encoder interface selection.
Table 11. Jumpers for Each Channel for Encoder RS485 Data Configuration
Channel
Jumpers
A B
0 J5, J6 J7, J8
1 J19, J20 J21, J22
2 J33, J34 J35, J36
3 J47, J48 J49, J50
Table 12. Encoder RS485 Data Configuration
Jumper Position
Data Configuration Encoder
A b
Out Out RX only. —
Out In Bidirectional on RX pair. EnDat
In Out Separate RX and TX. —
In In Bidirectional on TX pair. —
Table 13. Jumpers for Each Channel for Encoder Selection
Channel
Jumpers
A B C D E F
0 J10 J11 J12 J13 J14 J15
1 J24 J25 J26 J27 J28 J29
2 J38 J39 J40 J41 J42 J43
3 J52 J53 J54 J55 J56 J57
Table 14. Encoder Interface Selection
Jumper Positions
Encoder Interface
A B C D E F
In In In Out Out Out Resolver.