A, B and Z have different information roles; the receiving logic determines how edges are counted.
Identify the signals and decoder
Dynapar distinguishes quadrature channel phasing from the controller's x4 interpretation. The receiver convention must accompany the encoder specification. Primary reference: Dynapar encoder FAQ.
Record the identified A and B signal relationship, available index signal and receiver configuration. An index observation has a defined encoder relationship; it is not automatically the complete machine's home reference. Keep pulse and count terminology explicit rather than letting an unexplained resolution figure answer both.
A hypothetical count reconciliation
Assume a fictional encoder supplies 1,000 defined A-channel pulse periods per revolution. A stated x4 receiver interpretation counts the relevant A/B edges, giving 4,000 counts per revolution under that basis. The physical specification and receiver count are different entries; the larger count number should not be read as a newly manufactured encoder resolution.
Make columns for encoder pulse definition, decoding convention, resulting count definition, direction logic and index use. The numbers are invented, not an HM feedback specification. The arithmetic supplies no position accuracy or permissible input frequency.
Keep interface meaning through replacement
When an encoder or receiving configuration changes, verify that the stored scaling still uses the accepted definitions. A mechanically compatible spare can leave an information mismatch if pulse and count bases differ.
Retain the actual signal and receiver references with the interface record. This guide helps a buyer reconcile specifications and controller interpretation without supplying pin assignments, programming a decoder or treating one index pulse as proof of every downstream mechanism's coordinate. Those functions need their own actual design and verified relationship.
Customer Questions
Does quadrature itself mean x4 counting?
No. Preserve the receiver's decoding convention.
Is an index automatically the machine home?
No. Its physical reference relationship must be defined.
Do more decoded counts prove greater position accuracy?
No. Accuracy requires its own evidence.
Primary References
These references support the technical principles discussed in this guide. The worked examples and review questions are educational.
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