David_2's latest activity

What is a 'duty parameter' on any On-Off/PID controller?

Hi Guys To make a long story short: Some common reference is needed, not for return current for the differential signals, but for...

Can you clarify your requirements? "Poll one MODBUS register continously" seems to imply you're looking for a Modbus client/master...

Unfortunately we cannot be more descriptive with our responses until you are more descriptive in explaining the problem. We need to know...

The manual (pg 75) for the FMR67 tells you to do the mapping function...

@Shihabe3400, The Mark* turbine control systems have a "feature" that allows trip conditions which occur AFTER a previous trip...

I've seen a circle with LT or LIT or LZT (safety) with the letters RDR or the word Radar printed next to the circle.

It's unlikely anyone here will be familiar with the data logger software you're using. Therefore, I recommend you diagnose and...

>In Modpoll software i select range of modbus addresses from 200 to 340 That attempts to read 140 registers which exceeds the Modbus...

So you read (4)0201 through (4)0221 with Function code 03, in one transaction and you get good data in all the registers. Then, in a...

ModScan will open a Modbus/TCP connection and keep it open while making requests (it does not close the connection after each...

Good news! Yes; those barcode thingies can (and have) trip(ped) up many people. I traveled to a site once where the technician had...

@HRG, To my knowledge there is no such document in existence. You wrote, “…we are experiencing issues with the existing HMI PC due to...

I'll bet it's the switch behind the push button actuator that's the real problem, not the pushbutton itself. I doubt that replacement...

On the clamp-ons that I've used, a positive reading is forward flow and a negative reading is reverse flow. The connection of the...