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RS-232 and RS-485 are hardware layers, they are not protocols. Hardware buses just transfer bits. A Protocol is a set of rules that govern communications. Who talks to whom and when. How is communication iniated and terminated? What happens where there's an error? There's lots of info...

A protocol analyzer assumes that the bits it "sees" and then analyzes are what the sender sent and have not been corrupted by electrical factors: - noise - common mode - excessive cable capacitance - inadequate signal amplitude - impedance loading - ringing or reflected energy appearing as...

I doubt it, I suspect you need to implement one of the comm protocols to fetch or poke the data. DDE is a Windows communications method that talks to Excel. See a DDE description, here, https://realpars.com/dde/ An OPC server might well read data via raw RS-232 and bridge it to DDE.

You might want to start with V440-F C-Mount Code Reader's communications manual which has sections for controlling operation and data output via parallel I/O, Ethernet/IP, Profinet or RS-232. https://assets.omron.com/m/16069dea48d414c1/original/V440-F_C-Mount-Code-Reader_Communication-Manual.pdf

An overview? Good luck, maybe someone else can come up with one. A technical article on this site gives a perfunctory view of the Data Highway + network used by A-B RIO. The article mentions the Allen-Bradley Data Highway Installation manual...

Jan Axelson's book, Serial Port Complete is a serious hardware reference for designing serial ports. First edition has some Visual Basic code. 2nd edition expands to USB. Might be a starting point for understanding the hardware side of RS-232. The protocol spec will drive your coding.

https://lidarradar.com/info/guided-wave-radar-vs-non-contact-radar

For low flow of a clean dry gas (I haven't a clue what pellet air is) thermal dispersion technology works well. It does not like moisture , especially condensing moisture. Averaging pitot tube might do it, but I no longer have sizing programs. Veris/Verabar (sold through Armstrong) puts a...

For NPN connection, assuming Group a terminals on the 1100 and 1100 DC OUT p/s: Prox Brown wire connects to DC (+) Prox Black wire connects to 1100 terminal I/0 (in group a) Prox Blue wire connects to DC (-). The 1100 DC COM terminal must also be jumpered to DC (-). Connecting DC COM to DC...

It's a differential pressure gauge, subtracting the applied pressure on the presumed (-) low side from the pressure on the high (+) side and indicating the difference. Assuming that the low side port is marked with the (-), it looks like the (-) side is open to atmosphere so the DP gauge, as...

The author worked as an instrument tech and taught instrumentation for a number of years. As one reads it, the hands-on viewpoints come through the text. It is a true donation to the industry.

I don't know what trolling" is outside of fresh water fishing. Seems to me to be day-to-day business. You got a price for licensed software. Is buying the software likely to solve the problem or maybe just do a better job defining the problem? Is the problem big enough to warrant solving...

The shield/screen gets grounded, typically at the analog input end. An RTD should have at least 3 wires, the 3rd wire being lead wire compensation. None of the RTD wires should ever be grounded. Have you noted that the previous posts were 8-9 years ago?

DCS manuals are typically not available to the public; with distribution limited to vetted web site registrants. I am not a vetted registrant so I have no access to current Experion documentation. But I do happen to have a copy of an R110 (2014) Experion LX (not PKS) Control Builder Components...

You didn't specify what kind of ultrasonic sensor. I have no experience with in-line transit time ultrasonic flow meters, but some experience with clamp-on transit time flow meters. The energy pulses used in ultrasonic instrumentation use frequencies above audible audio frequencies and that...

2 * 0.023A * 23 Ohms * 0.15km = 0.16V voltage drop in the copper cable For purposes of determining whether the DC power supply in a 2-wire loop powered circuit has sufficient voltage to "lift-off" the transmitter (minimum 9V lift-off with no load, 14.2V for a 250 Ohm load and cabling), one has...

I don't know. I did my calcs shown above from first principles, not from the V=2*I*R*L formula. In the V=2*I*R*L formula, if L is resistance (Ohms) of a length of cable (not the length itself), then the multiplier '2' might account for the fact that it takes two conductors to make a circuit...

Note that the unanswered post above is from 2015 (7 years ago) and has undoubtably been resolved by now. I stumbled onto it when searching for other Masoneilon pneumatic controller info and the question intrigued me. I have almost no experience in pneumatics, other than troubleshooting 62VA...

Groupbus is a name for proprietary comm protocol. From a quick reading it is not clear to me whether the term Fieldbus (upper case F) refers to Foundation Fieldbus, or whether Fieldbus is another proprietary fieldbus (lower case f). There are lots of fieldbuses, because anyone can create a...

Isn't the set point rotary scale enumerated with the set point range? I would assume that the set point range closely matches the bourdon tube range. URL link to spec sheet for Masoneilon 2700 pneumatic pressure controller: http://ipsacv.com.mx/Masoneilan/docs/specdata/Instruments/CW6000.PDF