4.7 Other I/O
4.7.1 Encoder interfaces - X9, X10, X11, X12, X13
9 
5
6 
1
Location | Connectors X9, X11, X11, X12, X13 | |
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Pin | Name | Description |
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1 | CHA+ | Channel A signal |
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2 | CHB+ | Channel B signal |
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3 | CHZ+ | Index channel signal |
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4 | (NC) | Not connected |
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5 | DGND | Power supply ground |
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6 | CHA- | Channel A signal complement |
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7 | CHB- | Channel B signal complement |
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8 | CHZ- | Index channel signal complement |
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9 | +5V out | Power supply to encoder |
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Description
Five identical encoder inputs, each with complementary A, B and Z channel inputs on a
Up to five incremental encoders may be connected to NextMove BXII. The auxiliary (master) encoder (X13) is labeled Aux Encoder. Each input channel enters an AM26LS32AM differential line receiver with pull up resistors and terminators. Encoders must provide 5V single ended or differential signals, or RS422/RS485 differential signals. The use of individually shielded twisted pair cable is recommended. See section 4.4.1 for details of the encoder power supply.
CHA+ Pin 1
CHA- Pin 6
NextMove BXII | Vcc |
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2k2 |
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22R |
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| AM26LS32 |
120R | Differential |
22R | line receiver |
2k2
to CPU
Figure 7 - Encoder channel input circuit - Channel A shown
MN1904 |
