By TypeOptical Rotary Encoders Magnetic Rotary
Hall Effect Sensors PotentiometersDraw Wire Solutions Inclinometers Electronic Modules SwiftComm Wireless
Encoder Interface
Sensor Support Products
By CertificationATEX and UL Hazardous
Area Certified
PL and SIL Functional
By ModelModel or SeriesEncoder Model
Crossover LibraryCAD Drawings
Online Store Customer Resources Literature Requests About Sensor Technology Incremental vs Absolute Encoder Videos Glossary

Sensor Support Products

  Home >  Electronics > Serial to Parallel Converter
Serial to Parallel Converter Module
Serial to Parallel Converter Specifications
Custom Product Request
Print this Page
Supply Voltage / Output:
Model Number:


Availability: Call the Order Department at 1-800-350-2727 from 7:00AM to 5:00PM PST Monday through Friday to check quantity available.



Serial to Parallel Converter Module
The serial to parallel converter takes serial data from either a SSI or RS-422 source and converts it to a 15 bit parallel output. This replaces the high cost and noise susceptibility of long, parallel cable runs with the simplicity of a low cost twisted pair cable to interface to a parallel-input PLC or controller.

Serial input type is selectable along with clock speed (for SSI) or baud (for RS422). The bright LED indicators give visual status for deserialization, testing and troubleshooting.

This module accepts inputs from 5 to 28 VDC and has output options of Vout=Vin, Vout=5V regulated or Vout = Open Collector. The compact DIN rail package is 105 mm wide, 78 mm deep and only 45 mm high and mounts to standard DIN Rail, EN 50 022, 35 mm x 7.5 mm, included with the module

Typical Application
Replace expensive parallel cable
A company was looking to replace a 12 bit absolute encoder and its cable.
This replacement was something the company have been avoiding since it was such a long cable run. It also had 15 conductors, making it a thick and expensive cable and that doesn't even include the labor costs for replacement.

With the availability of the Serial-to-Parallel Converter, this company was able to switch the encoder from a parallel output to an SSI output. The cable would shrink down to 8 conductors saving both material and installation costs and the signal would become more noise immune since it would be sent as differential pairs.

Instead of having to purchase a new SSI controller, the company purchased BEI's serial- to-parallel converter and keep the same controller. When all was said and done, the company ended up with a brand new axis control system for less cost than just replacing the old, parallel output cable.
Outline Drawing and Pin Out
Serial to parallel converter
Output Side

D14 to D0
Parallel Data Outputs
  For the SSI selection under pin FMT,
data is MSB justified.
For the RS422 selection under pin FMT,
data is LSB justified

Data Valid

  Logic LO = Data Valid
Logic HI = Data not Valid (transitioning)

FMT   Format Select

  Logic HI (N/C) = SSI
Logic LO (0V) = RS422 (Asynchronous)

EN   Output Enable

  Logic HI (N/C) = Output Active
Logic LO (0V) = Inactive (High Impedance)

SPD   Speed Select

  For SSI:
Logic HI (N/C) = 1.25 MHz
Logic LO (0V) = 200kHz

For RS422:
Logic HI (N/C) = 19.2 kBaud
Logic LO (0V) = 115.2 kBaud

0V   Supply Common   Logic LO available for format and speed selections

Input Side


Supply common
  Connect either 0V pin to power supply common. This should be the same supply common as used on the encoder.

0V   Supply common

  Connected internally - see note above

Vs   Supply voltage

  Provide 5 to 28 volts supply

D-   Data minus

  Connect to data - line from encoder

D+   Data plus   Connect to data + line from encoder

CL-   Clock minus   Connect to Clock- line from encoder (SSI only). If using RS422, then N/C

CL+   Clock plus   Connect to Clock+ line from encoder (SSI only). If using RS422, then N/C
DIR   N/C   Leave this disconnected