Mitsubishi OSE104 Serial Encoders
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Overview
Proprietary serial encoders made by Mitsubishi meant to work with their MELDAS CNC controllers. It uses 2.5 Mbaud RS-422 to communicate with the controller. The protocol has been partially reverse engineered, and is supported by Rene Hopf's STMBL servo drive.
Specifications
Page 195 (III-58 in the PDF) of the BNP-C3000C(ENG) manual details the specifications for different variants.
Wiring Diagram
| Wire Color | Circular Pin | Mini-D Pin | Function |
|---|---|---|---|
| green | N | (shield) | (case GND) |
| gray | L | 17 | RQ- |
| orange | K | 7 | RQ+ |
| yellow | J | 16 | SD- |
| red | E | 9 | (battery) |
| blue | H | 6 | SD+ |
| black | R | 1,11 | 0V |
| white | S | 10,19,20 | +5V |
Bill of Materials
MC34051 RS-422 transceiver chip.
Online Resources
Mitsubishi MELDAS MDS-C1 Series AC Servo/Spindle Specifications Manual