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Slow communication throughput is the nature of 'sequential polling' Modbus when a slave fails to respond for any reason because the master/client waits for a response during the entire 'time-out' period before moving onto the next poll in the sequence. You can shorten the time-out period...

The user manual the comes up in a web search for EDMI MK6E is dated 2004 and shows serial connections: RS-232 or RS-485. One model appears to use RJ-45 connectors for the RS-485, but the word Ethernet does not appear in the manual, so the network is apparently an RS-485 multidrop network. A...

The coaxial probe is the one with the highest sensitivity. Does your GWR transmitter have a coaxial probe? I'll bet it's a rod probe, the least sensitive style GWR probe.

Either 1) the controller is not tuned aggressively enough to correct the temperature error or 2) the load exceeds the heat capacity until the load lightens or stops. You didn't tell how the load changes while the sealer operates or whether the sealer can hold its own (supply...

No experience but you can evaluate its claims - tuning fork ultrasonics for concentration http://www.sensotech.com/cms/produkte0.html?&L=1

OPC UA promises to do this and much, much more. There's a lot of smoke and mirrors about what's in the pipeline and what's coming out and how our lives will radically change (unstated as to whether that will be better or worse) with UA data flying all the place. I stopped holding my breath...

>1- if the positioner is faulty, what could be the problem? Get the manual for it and find the troubleshooting section in the back part of the manual and read it. Most failures are probably due to dirty and/or wet supply air that gums up the internals. There can be electronic failures, too...

1. One never ever guesses at serial comm or slave node ID address setup. One reads the manual for the power meter and checks to see what the serial comm settings and slave node ID address are: Slave node ID: Baud rate: whatever data word: 8 bits stop bit: one parity whatever Be aware...

Last page (6) of this boiler controls app note shows some boolean in a SAMA diagram. https://cache.industry.siemens.com/dl/files/624/51436624/att_75679/v1/AD353-131r2.pdf

Series 'contacts' in a rung are a logical AND function Paralleled 'contacts' in a rung are a logical OR function See pages starting at page 65 in the document at this link for ISA Boolean function block symbols: http://avanceon.com/wp-content/uploads/2017/01/ISA-5.1-2009.pdf

All pressure measurement is inherently differential, meaning pressure is measured with respect to a reference pressure. For gage pressure measurements, the reference is the atmosphere. For absolute pressure measurements, the reference is a chamber evacuated to hard vacuum assumed to be...

I ran into a two wire level transmitter that had really high lift-off voltage, around 19V if I recall correctly. The wire run was over half a mile, not heavy gauge copper conductors. It would run fine until it reached the point at which the power supply could no longer drive the loop...

It is probably explained in the documentation, like these screen shots: https://s3.postimg.org/5560zn6n7/About_the_clamp_point_1.jpg https://s28.postimg.org/983v27rvh/About_the_clamp_point_2.jpg Your mileage may vary, depending on device/brand/model.

Glad you got it running. Thanks for the feedback to the forum and your insight. I agree with your insight about needing to reset devices for them to accept any change you've made. In the PC world, the processing power is so much greater that changes can be accepted on-the-fly, but devices...

1) Going back to your original post, >I don't know the slave address for this device. The slave address is called CodE in the serial setup section, as shown in the image from the manual: https://s27.postimg.org/ecrk61zc3/Modbus_slave_ID.jpg Slave address should not be zero. 2) For...

You can use an image sharing site like Postimage.org and then post the "Direct link"

The present day spec for drift-over-time is so good that I probably wouldn't bother checking. I'd assume the performance is more than adequate after the range change. But it's your call. Someone has already re-ranged the transmitter from 0-100m3/hr to 0-200m3/hr, so you don't call re-ranging...

Automation Direct is a web based vendor of PLCs and associated components and controls. They publish a 93 page text called Automation 101: Control System Engineering, A Condensed Guide to Automation Control, System Specification, Design and Installation It's a free download. I suspect you...

1) There's a setting, SEr.P in the controller to select either the Modbus RTU protocol or Cencal Gefran protocol. Are you sure you've selected Modbus RTU? 2) It isn't clear whether those zeros are real traffic or fillers in the program you're using. If you are not getting any response...

Apparently, the Energy Meter (EM) register addresses polled by the charge controller (the Modbus master) are configured via web browser connected to the charge controller. The EM (Energy Meter) configuration is accessed from a button labeled EM Config on the Energy tab page in the web...