Problem in Modbus File Write Command
Mark VIe I/O Pack Testing
How to test if the Mark VIe I/O pack is working or not
Siemens Simoreg DC Drive Fault Message F030, F035
Siemens Simoreg DC Drive Fault Message F030, F035
By Neil on 5 December, 2016 - 5:32 am
Has it lifted more than 20 tons before? With respect to the 6RA2485 series of DC drives, F031=...
Open/Close Test of Liquid Fuel Bypass Valve without LVDTs
How to perform open/close test liquid fuel bypass valve servo valve 65FP on GE frame 9E machine without LVDTs?
Modicon Quantum/Word Mapping
Trying to understand word mapping
Setting up Profinet I/O in Siemens TIA Portal
Siemens PLC Controlling a Lenze servo
By Steve Myres on 28 November, 2016 - 4:10 pm
The general procedure for third-party slave devices is to download from the manufacturer the...
Synchronizing Magelis STU Time with Modicon PLC
Trying to synchronize Magelis STU HMI time with a Modicon PLC using codesys and vijeo designer
Citect v7.40 SP1 - PM710 meter - FloatMode problem
Posted by agoslinski on 10 June, 2016 - 4:05 am
I have a problem with reading values from energy meter PM710 (Citect - Modnet - PM710)
WattStopper HLINKCC and Old Lighting Integrator Panels
Interfacing with an old Wattstopper HLINKCC and LI LCPs
Vijeo Citect MODBUS RTU Communication
Problem communicating between Vijeo citect and a MODBUS Device (Preset ACCULOAD).
Step 7 Simatic Programming Examples
Beginner with Step7 Simatic would like to get program examples.
Verify current testing does not drive valve open.
Compactlogix PLC with HART
Connecting a Compactlogic PLC with a 1769sc-IF4IH HART module
By Ikhtiander on 18 November, 2016 - 12:08 am
Hello imti2356, 1769sc-IF4IH module is a 3rd party product made by Spectrum Control, have you...
Monitoring and Controlling Central Air Conditioners
Questions about setting up automation project for central air-conditioning system
Cascade PID for Density & Flow Control.
Density & Flow Control with dosing in line.
Honeywell Experion SCADA vs PCDI Communication
Using PCDI vs SCADA in Honeywell Experion with Modbus TCP
Modbus RTU to TCP via virtual com port?
My problem: Getting software that only scans for COM ports (Modbus RTU) to connect to a Modbus TCP device.
By WallRoy on 10 November, 2016 - 9:22 am
I use this software Virtual RS485 Port Driver (http://www.eltima.com/products/virtual-rs485-port/) ...
TOP 10 list of Best and Worst HMI & SCADA
Posted by Luciano Dell'Orfano - RTS Argentina on 12 October, 2002 - 9:35 am
I know everyone has their personal preferences, but I think it would be more interesting to discover which software is the Best or worst...
MKVIe IO Pack Failures and "Module Required" meaning.
PV800 HMI Multiple Position Switch
Batch tank system, Is it possible to make a six position selector switch with a HMI? I am using a AB Panel-View 800
Rockwell PLC PID Setpoint Ramp
Rockwell PLC PID setpoint ramp question
By Dave Ferguson on 31 October, 2016 - 10:25 pm
I believe there is no such function in standard pide nor in the Pax PID. I see a few of my ideas...
FastTrak PLC Programming Software
What are your FastTrak PLC programming software experiences?
Saia PCD - Saia Burgess Controls
Anyone using Saia-PCD PLCs?
How PLC Communicates with DCS
How does a PLC relate to the DCS
By aan aan on 30 October, 2016 - 9:06 pm
Hello Mans92, Whatever their functionality or hierarchy on control system, From electronic point...
By Ikhtiander on 30 October, 2016 - 11:33 am
Hello Mans92, From communication protocol point of view, DCS and PLC basically is a same entity....
Siemens S7-400 Does Not Power On
Posted by Abdul Mateen on 27 October, 2016 - 1:25 am
Siemens S7-400 would not power on after communication error.
By Gabriele Corrieri on 27 October, 2016 - 2:21 pm
Hello, there isn't fuses inside cpu. At least I think you should found some (I've not...
Connect PC with PLC Quantum with Unity Pro XL by USB Port
Connect PC with PLC 140 CPU65150 with Unity Pro XL by USB Port
By Brian on 27 October, 2016 - 10:48 am
When you installed Unity Pro, did you install the driver? If not, run the install to add drivers. ...
By Backer Ajmal on 26 October, 2016 - 6:55 am
Where can i download this PLC-USB driver? >Disconnect Ethernet cord before connection via...
Delta PLC Communication Issue
Facing communication issue with Delta DVP 28SV PLC when powered OFF & ON.
PL7 Xway Connection Lost after Second TSXETY4103 Added
Premium PLC remote xway connection lost after added second ETY module
PWM 4 to 20 mA Signal To Go To PLC
Connecting a sensor outputting 4-20mA PWM signal to an existing PLC that can only accept analogue 0-10V or 4-20mA signals and/or digital inputs
Allen Bradley PLC as Ethernet/IP Adapter
Can Allen Bradley PLC be configured as Ethernet/IP slave or adapter?
By James Ingraham on 20 October, 2016 - 12:53 pm
No, a 1769-L33ER can not be configured as an EtherNet/IP slave or adapter. However, using produced...
best practice to secure modbus TCP
By smachin on 20 October, 2016 - 12:02 pm
Did anyone ever come up with a good solution to securing Modbus TCP devices? I am working on...
New to plc would like more information about addressing in PLCs
Problem with Allen Bradley 5/40 CPU
Posted by Mihir Ramkrishna on 18 October, 2016 - 11:57 pm
After maintenance, an different version of program was in processor after powering up PLC.
By Bob Peterson on 19 October, 2016 - 11:37 am
it is almost certain that someone had failed to update the eprom to what was in the PLC and the...