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  Top » Catalog » FAQ » - Questions on Specs
- Questions on Specs

QUESTIONS ON SPECS

  1. What are the operating environment specs on TRi PLCs?

  2. Do TRi PLCs have  UL or CE approval?

  3. Can I do floating point computation on my PLC?

  4. How do I select the right TRi PLC to meet my need for I/Os, timers counters etc?

  5. What's the difference between a PAC (Programmable Automation Controller) and a PLC (Programmable Logic Controller)?


  1. What are the operating environment specs on TRi PLCs?


     

    Temperature
      - Operating
      - Storage
     
    0 to 70 degree C.
    -20 to +85 degree C
    Electrical Noise resistance
    IEC801-4 (Fast transient)

    2KV to power supply, 50 microsecond pulse width, 1 minute.1KV to I/O by capacitive coupling, 50 microsecond pulse width,

    Vibration resistance
    IEC 68-2-6/1980
    Vibration 1.6mm
    25Hz to 100Hz
    Amplitude = +1.
    acceleration = + 4.0g        


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  2. Do TRi PLCs have  UL or CE approval?


    All TRi PLCs carry CE marking for conforming to the requirement of provision s in the EMC Directive 89/336/EEC as amended by 92/31/EEC, 93/68/EEC and 93/97/EEC.

    As TRi PLCs operate below the current threshhold stipulated for UL Class 2 device, it does not need UL listing and approval for safe operation. This has no impact on the equipment that require UL certification since many of our PLCs have already been deployed in equipment and machinery that have undergone UL certification.



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  3. Can I do floating point computation on my PLC?


    To optimize the computational performance, the current generation of F-series and  M-series PLCs only compute using 32-bit integer arithmetics and do not support floating point computation.

    However, many computational task that seems to involve floating point math can also be handled using "fixed point" math, in which case a unit integer represents, say 0.01, and since a 32-bit integer can represent numbers of up to +/- 2 billion you can get a lot of fractional arithmetics computation done this way.



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  4. How do I select the right TRi PLC to meet my need for I/Os, timers counters etc?


    You can check the selection chart for each PLC family for an overall view of the number of digital I/Os, analog I/O, serial comm ports, etc available to the PLCs. Then go the "Product Home" page and select the respective PLC family and then select the PLC model of interest for viewing.

    We have made all hardware manuals available online for all the PLC and peripherals, including installation guide, user manual, programmer's reference etc. So be sure to find them when you browse the detail for each PLC model.

    F-series Selection Chart

    M-series Selection Chart

    H-series Selection Chart

    E10 npn+ and E10-Relay+



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  5. What's the difference between a PAC (Programmable Automation Controller) and a PLC (Programmable Logic Controller)?


    PAC was a newly coined term in the last few years to describe more sophisticated controllers that share the same hardware architecture as the 'Win-Tel' PC. These PAC were better equipped in terms of capability that traditional microcontrollers. They often operated on more advanced microprocessors and programming language. Even though the TRi F-series and M-series 'super PLCs' are not based on PC architecture, they do, however offer lots of features that are found in a typical PAC and suit the control needs for many different industries.



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