Description
Compumotor 2100-1 Indexer Code P 2100 Series IEEE-488 RS232C For Parts
The Compumotor 2100-1 is a standalone stepper motor indexer from Compumotor Corporation's 2100 Series, designed to provide programmable motion control for stepper motor-driven positioning systems. It accepts velocity, acceleration, and preset position parameters via front-panel thumbwheel switches and communicates with host systems and drives through a full complement of rear-panel interfaces. This unit is being sold for parts or repair — the power LED activates briefly upon switch-on but then immediately shuts off; the unit does not remain powered.
Specifications & What's Included
- Manufacturer: Compumotor Corporation, Petaluma, CA
- Model: 2100-1
- Series: 2100 Series Indexer
- Code: P
- Power Input: 117 VAC, 0.2A (IEC inlet, rear panel)
- Front Panel: Preset Position thumbwheel display, Accel thumbwheel, Velocity thumbwheel
- Front Panel Buttons: Power, ALT, Preset, Cont, Start, Stop
- Front Panel Indicators: Accelerate (yellow), Constant V (green), Decelerate (yellow) LEDs; On-Line LED
- Rear Connectors: Position Sensor (DB-25), Display (DB-25), IEEE-488, Auxiliary (DB-25), Joystick (DB-25), Driver (DB-25), RS232C (DB-25)
- Form Factor: Benchtop / Desktop enclosure
- Country of Manufacture: USA
- Sold as unit only — no cables, motor, drive, or accessories included
Applications
The Compumotor 2100 Series Indexer is a standalone motion controller from the 1980s designed to sequence and control stepper motors used in precision positioning applications — including laboratory automation, semiconductor handling, CNC-adjacent positioning stages, and industrial pick-and-place systems. It interfaces directly with Compumotor stepper drives via the rear Driver port and accepts remote commands over IEEE-488 (GPIB) or RS-232C, allowing integration into automated test and measurement systems or host computer-controlled environments. The front-panel thumbwheels allow standalone manual entry of position, acceleration, and velocity parameters without a host computer. Units like this were common in university research labs, semiconductor fabrication support equipment, and precision motion rigs of the era. Replacement or repair parts, boards, and power supply components from working or parted-out 2100 Series units remain sought after by facilities still running this platform.
This Compumotor 2100-1 Series Indexer (Code P) does not power on properly — the power LED illuminates briefly then immediately shuts off. It is being sold AS-IS for parts or repair and is not guaranteed to be functional. The enclosure is in good cosmetic shape with light surface marks consistent with normal bench use. All panels, thumbwheel displays, front-panel buttons, and rear connectors appear physically intact. Please review all photos carefully and contact us with any questions before purchasing.
Warranty Information
Additional Information
Brand: |
Compumotor |
Model: |
2100-1 |
MPN: |
2100-1 |
Type: |
Stepper Motor Indexer / Motion Controller |
SKU: |
47819 |
Code: |
P |
Series: |
2100 Series |
Seller Notes: |
Unit only — no cables, motor, or accessories included. |
Country/Region of Manufacture: |
United States |
Power Requirements: |
117 VAC, 0.2A |
Interface Type: |
IEEE-488, RS232C, Driver, Joystick, Auxiliary |
Connectors: |
DB-25 (multiple), IEC power inlet, IEEE-488 |
Front Panel Controls: |
Preset Position, Accel, Velocity thumbwheels; Power, Start, Stop, ALT, Preset, Cont switches |
Indicators: |
Accelerate, Constant V, Decelerate LEDs; On-Line LED; Power LED |
Form Factor: |
Benchtop / Desktop |
Compatible With: |
Compumotor stepper motor drives and systems |
Position Sensor Port: |
Yes — DB-25 connector on rear panel |
Display Port: |
Yes — DB-25 connector on rear panel |
Condition Notes: |
Compumotor 2100-1 Indexer Code P does not power on — power LED comes on then immediately shuts off. Sold AS-IS for parts or repair. Not guaranteed functional. Cosmetically intact. Contact us with questions. |
California Prop 65 Warning: |
WARNING: This product can expose you to chemicals including lead and lead compounds, and DEHP (a phthalate), which are known to the State of California to cause cancer and birth defects or other reproductive harm. Go to P65Warnings.ca.gov |
