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  1. automation99

    Bias Control

    Can anyone help me to understand bias control, is this same as ratio control to have proportional control of two related control variables? Thanks.
  2. automation99

    What is fast-loop

    In analyzer sampling system, fast-loop has been used very often, what does it mean by definition? Is there fixed configuration of fast-loop?
  3. automation99

    communication between different PLCs

    I have one AB compactLogix PLC and one GE 90-30 PLC (client prefered), if I choose DH+ to communicate between these two, do I need to have any converter for the GE PLC or just plug these two and they can talk to each other? I am new in this field, please help. Or should I insist to have AB...
  4. automation99

    PLC SIL Definition

    AB ControlLogix 1756 is rated for SIL 2, does it mean I will get SIL 2 in any kind of configuation, or I have to be careful select components of controlLogix to make it SIL 2, such as redundant CPU, redundant network? To what level of redundancy I need to make it SIL 2? Thanks in advance.

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