Communication issues with Honeywell handhelds in the Yokogawa CS3000 system
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In the Yokogawa CS3000 system, why do the values on the DCS experience large fluctuations at the moment of communication with the Honeywell handheld controller and transmitters? This kind of situation has not occurred before. I’d like to ask the experts why this is the case? Thank you
It shouldn’t have any impact; otherwise, there’s a problem with your controller, which has forced an incorrect value. The handheld controller is independent of the system.
Which place has a value set high, and what is the name of the menu? Haven’t seen it before. But when used in Zhejiang University’s control system, it doesn’t experience fluctuations.
Which place has a value set high, and what is the name of the menu? Haven’t seen it before. But when used in Zhejiang University’s control system, it doesn’t experience fluctuations.
If it’s a large fluctuation, then it’s likely not a forced value situation. Only if the data increases or decreases is it likely to be a problem with the forced value.
Honeywell uses the DE protocol, which relies on pulsed current; when the handheld controller is modified, brief pulses of current flow through… as a result, the data in the control room fluctuates. HART uses frequency-shift keying, while FSK operates by superimposing signals on a direct current stream; when the handheld controller is changed, there is no change in the current
Are there any materials on Honeywell’s manual controllers? Could you send me one? jiaoyachong6@163.com