Character String and Flags from Same Master in S7-1200 PLC Modbus Communication
Siemens S7-1200 PLC Modbus RTU with CM1241-RS232
Centum 3000 Talks Modbus TCP?
Polling data from Centum CS 3000 using modbus TCP.
ALE111 module send failure
Yokogawa ALE111 module communication problem
By Bolek on 26 August, 2016 - 5:42 am
Hi Peterb, I'm very glad to read your answer. I think your clues are very helpful. All my...
By peterb on 24 August, 2016 - 1:12 am
Hi Bolek, As always prevention is better than cure. I demonstrated the ALE111 crash to Yokogawa...
By Bolek on 22 August, 2016 - 5:58 pm
Hi, I think that it must be any problem with the ALE111 cards. In my network work a lot of...
Question about Modbus TCP baud rate (communication speed)
High Speed Counter Configuration
Setting up high speed counter in m340 plc
By aan aan on 25 August, 2016 - 11:06 pm
Hi LuckyA, below is link to download manual of AB controllogix high speed counter for your...
By luckyA on 25 August, 2016 - 6:08 pm
Hi Ikhtiander, My control philosophy is simple. Count incoming pulses every 100msec for 5 min....
By Ikhtiander on 24 August, 2016 - 10:35 pm
Hi LuckyA, I don't have experience with M340. But based on my experience using AB PLC, High...
By aan aan on 23 August, 2016 - 9:03 pm
Hi LuckyA, Configuration for High Speed Counter is depend on the PLC brand. you need to mention...
Allen Bradley AI Card 1756-IF16 Not Reading Full Scale
The raw counts in the Allen Bradley 1756-IF16 AI card are not increasing to the full scale.
By Bob Peterson on 24 August, 2016 - 10:40 am
perhaps if you configured the channel as a millamp input it would work correctly on a millamp...
By aan aan on 23 August, 2016 - 8:56 pm
Hi sbinstrument, You said your gas detector is 4-20 mA type but your channel configuration...
Multi GE PAS 8000 I/O (Controller) issue
12 sets of redundant GE PAS8000 controller in the same network can't function
How to shutdown of GE PLC RX3i
Meaning of 1OO2D and 2OO2D
Posted by Asif khokher on 30 April, 2002 - 10:05 am
Can any body explain what is the difference between 1OO2D and 2OO2D?
By W.L. Mostia on 21 August, 2016 - 8:52 pm
Just a few additional comments: The redundancy schemes for safety instrumented systems (SIS)...
Modbus RTU with Grain Watch System
Modbus master appears to communicating from Modbus Poll to network controller (slave), but the slave is not returning any information.
Error message with HIMA PLC and ELOP software on WINDOWS XP
Port Forwarding External IP to PLC
For external access to a PLC, is this wise? The end-user IT guys want to simply forward a port on their external IP to the PLC
By Jeremy Pollard on 16 August, 2016 - 6:21 pm
Investigate Route1.com... MobiKEY - remote access made easy... secure... their IT peeps will...
VFD Pumps Flow Control Using One PID
I am facing a problem with a PID controller that controls more than one VFD pump.
Reading data from DSE genset controller via Modbus using S7-1200 by siemens
Modbus RTU Siemens and Rotork Valves
I have Modbus receive error (0830) in cp341 diagnostic buffer, when i sent request for command and status to MOV Master Station (Rotork Valves)
By Harvard on 13 August, 2016 - 9:40 pm
QUOTE: >i checked rtu with modscan also, because my pc have serial >port. with modscan rtu,...
By hamid Ankouti on 10 August, 2016 - 10:30 am
any body know what is connection diagram between cp341 15 pin connector and rotork mov master...
How can I communicate with PLC 5/10 or PLC 5/15
Communication PLC5/10 & PLC5/15 with laptop through serial (9 pin) connector or USB
Establishing RsLinx OPC Connection via VB
Looking for links to a tutorial on how VB can establish connection to the Allen Bradley PLC 5/05 OPC RSLinx.
By Bob Peterson on 10 August, 2016 - 7:29 pm
There are a bunch of examples on the Allen Bradley website in their knowledge base....
Why are some PLC manufactures saying to keep the PLC power on while upgrading the firmware?
Installation Honeywell Experion PKS
Looking for installation manual for Honeywell Experion PKS
Remote GT Operation Modbus or Ethernet or Controlnet
Is there any limitation /standard/best practice for using Modbus for controlling GT from DCS or remote station??
Intouch LGH File to CSV File
Convert .lgh files generated by Wonderware InTouch to .CSV
By Bill_SS on 8 August, 2016 - 12:44 pm
XLReporter, which has been used in industry since 2001, converts LGH files to csv and Excel as...