EncoderWorks can configure OCD-DPC1B-1216-B08S-H3P as a custom compatible replacement solution for absolute multiturn Profibus DP feedback where node address, bus termination, 28-bit position structure, Class 2 parameter mapping, and Ø8 mm blind-hollow fit must remain aligned with the installed PLC project. The failure boundary is not an analog voltage range, but bus-in / bus-out polarity, configuration-file compatibility, preset behavior, counting direction, terminal-resistor logic, and connection-cap wiring. Typical production lead time: 15 working days.
This model is used where the control system reads absolute multiturn position over a Profibus DP network. A compatible replacement must preserve the 16-bit singleturn and 12-bit multiturn position structure, Binary position handling inside the bus device, node number, termination logic, configuration-file compatibility, radial 3-gland wiring layout, and Ø8 mm blind-hollow mechanical interface.
System Limits
The first system boundary is the Profibus DP network configuration. OCD-DPC1B-1216-B08S-H3P uses a Profibus DP interface with Class 2 functions, so the PLC project must see the same device behavior, node address, resolution parameter, gearing factor, counting direction, preset function, velocity scaling, limit-switch behavior, diagnostic response, and process-data expectation. If the replacement is installed with a wrong node number, incompatible configuration file, different parameter length, wrong preset behavior, or mismatched direction setting, the network may still detect a device but the axis can report wrong position, wrong direction, incorrect multiturn value, missing diagnostics, or unstable commissioning status.
The second boundary is the Profibus physical layer and removable connection cap. Bus line A/B, bus-in / bus-out continuity, supply reference, GND, shield handling, terminal resistor status, and outgoing-bus behavior must match the existing topology. A correct encoder can still fail if the terminal resistor is enabled at the wrong point, the outgoing bus is unintentionally cut, A/B is reversed, shield continuity is poor, or the cable-gland arrangement creates intermittent grounding or routing stress.
Wiring & Installation
Before replacement, confirm the full installed model code, Profibus DP node address, transmission-rate setting, configuration-file requirement, Class 2 parameter use, preset requirement, counting direction, velocity scaling, diagnostic mapping, limit-switch use, and terminal resistor position. Do not treat this as an Analog Voltage, CANopen, Profinet, EtherNet/IP, Bit Parallel, or incremental replacement, because the controller is reading a configured multiturn Profibus device rather than a voltage value, network object, discrete data word, or A/B/Z pulse train.
The blind-hollow installation must also be checked carefully. The Ø8 mm hollow shaft, 30 mm insertion depth, clamp condition, torque restraint, radial connection-cap clearance, static and dynamic misalignment, cable-gland preload, and grounding continuity can affect long-term stability. Poor clamping, excessive shaft offset, loose cable glands, shield discontinuity, or incorrect mounting preload can cause bus dropouts, mechanical drift, intermittent diagnostics, or early bearing wear.
Custom Compatible Solution
- Match Profibus DP device behavior, 16-bit singleturn plus 12-bit multiturn feedback, node address range, and Class 2 parameter expectations
- Preserve bus-in / bus-out A/B wiring, terminal resistor logic, GND reference, shield continuity, and supply wiring
- Adapt the Ø8 mm blind-hollow shaft, 30 mm depth, 58 mm B-flange class, radial 3-gland connection cap, and mechanical mounting boundary
- Review configuration-file compatibility, preset direction, velocity scaling, diagnostics, terminal-resistor position, cable-gland routing, and shaft misalignment before shipment
Key Data
| Item | Data |
|---|---|
| Model | OCD-DPC1B-1216-B08S-H3P |
| Encoder type | Absolute multiturn rotary encoder |
| Interface | Profibus DP |
| Profile / class | DPV0, DPV1, DPV2 Class 2 |
| Supply voltage | 10–30 VDC |
| Output driver | Profibus data interface, galvanically isolated via opto-couplers |
| Sensor technology | Optical |
| Singleturn resolution | 16 bit |
| Multiturn resolution | 12 bit |
| Total position structure | 28-bit absolute multiturn data |
| Code | Binary |
| Multiturn technology | Mechanical gearing, no battery |
| Transmission rate | Up to 12 Mbaud class boundary |
| Manual functions | Address selector 0–99 and terminal resistor via connection cap |
| Programming functions | Resolution, gearing factor, velocity scaling and filter, preset, counting direction, limit switches, node number, teach-in, diagnosis |
| Connection | 3 × cable gland connection cap |
| Connection orientation | Radial |
| Shaft / flange | Blind hollow, Ø8 mm shaft, 30 mm depth, 58 mm B flange class |
| Protection class | IP66 / IP67 boundary requires confirmation against installed version |
| Key replacement checks | Node address, bus termination, configuration file, bus A/B mapping, Class 2 parameters, preset, direction, 28-bit position structure, Ø8 mm blind-hollow fit |
