• Specifications

    Compact, rugged, industrial data entry and display tables.

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    Slide 1
  • Accessories

    No power supply required.

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    Slide 2
  • Downloads

    View and download a manual and selection guide.

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The CTM150 and CTM170 are compact, rugged, industrial data entry and display terminals. They are intended for use as operator panels and as service/setup panels in microprocessor based equipment. The only difference between the two units is that the CTM150 has an RS-232 communications interface, while the CTM170 has an RS-422 communications interface and 6 digital outputs.

These units offer a large, 16-character liquid crystal display. The sealed keyboard consists of 24 keys, including a numeric keypad and six function keys.

The CTM150 and CTM170 offers two operating modes: character mode and block mode. In character mode, characters are transmitted as a key is depressed. In block mode, output messages are transmitted as a whole when the Enter key is pressed. Multidrop operation, in which a number of terminals are connected to the same RS-422 communications line, is possible with the CTM170 in block mode. Each terminal has a unique address for multidrop operation. Operating parameters, which can be selected, are mode, turnaround delay, baud rate, data format, handshaking, local echo, terminators, key repeat, and cursor type. These selections are made during SETUP through the keyboard. Most can be controlled by downline host commands as well.



  • Liquid Crystal 5×7 Dot Matrix with Cursor
  • 16 character display
  • Character-height: 9.66mm (0.380")
  • 80 character display buffer
  • Display can flash and blink
  • Font supports underscore and block


  • Silicon rubber elastomer
  • 24 keys
  • Can withstand a million operations
  • 6 programmable function keys, 4 characters per key

Communications Interface

  • CTM150: RS-232 (TTL level)
  • CTM170: RS-422
  • Code: ASCII
  • Baud rate: 300, 120, or 9600 user selectable
  • Protocol: character mode (XON/XOFF), block mode, and multiple block mode
  • Max block length: 800 characters (input), 16 characters (output)
  • Max multidrop: 32 units/line
  • Connector type: 26-pin ribbon cable connector (3M #3593-6002) mates with 26-pin ribbon cable socket (3M #3399-6600)

CTM150 RS-232 (TTL Level)

  • Distance: 50 feet
  • Receive logic levels
    • Logic 1 +0.8V to -15V
    • Logic 0 +2V to +15V
  • Transmit logic levels
    • Logic 1 < 0.5V with 3KΩ load
    • Logic 0 > +2.6V with 3KΩ load

CTM170 RS-422

  • Distance: 4000 feet
  • Receiver:
    • Differential input voltage (open circuit): 0.2V < ΔV in < 6V
    • Input impedance: 12000Ω min.
    • Logic Levels
      • Logic 1: A'-low, B'-high
      • Logic 0: A'-high, B'-low
  • Transmitter:
    • Differential output voltage (open circuit): 5V max
    • Differential output voltage (full load, RL=100Ω): 2V min
    • Output current (active, RL=100Ω): 20mA
    • Output current (inactive): +-100μA
    • Logic levels
      • Logic 1: A-low, B-high
      • Logic 0: A-high, B-low

Power Requirements

  • Voltage: +5Vdc+-5% or (+7.5Vdc to +12Vdc)
  • Current – CTM150: 50mA max
  • Current – CTM170: 100mA max


  • Size: 104.2mm x 180.4mm x 26.9mm (4.102″ x 7.102″ x 1.060″)
  • Weight: 266g (10.5oz)
  • Case material: ABP Plastic


  • Operating temperature: 0° to +50°
  • Storage temperature: 20° to +70°
  • Relative humidity: 5% to 95% (Non-condensing)
  • Sealing resists dust, liquid




Mounting brackets



Cable, DB9F to DB9M for tight clearances (scanners/serial ports)



26-pin ribbon to DB9 converter



Ribbon to DB25 converter



Biometric fingerprint reader, externally mounted, serial COM connect


Microterminal Selection Guide

Wondering which operator interface model is right for you? Here is a handy tool for comparing connectivity and features of all of our 'microterminal' products.

CTM150/CTM170 User Manual

User manual for the CTM150 and CTM170 Terminals.