[Timer not changing state...]

As T8 is self-reseting, probably O8 never set. Try SET instruction to check if T8 is really doing what you want

[User-Management]

^{I guess the better option is to encrypt sensitive data such as password. This can be accomplished using math calculation in ladder when reading and writing from/to database. User may be able to see datatable but encrypted password.}

^{Other way, would be using registers to save such information.}

[Variable output on/off-time depending on analog input]

Based on your latest post, what you need is a PID with PWM digital output. There are examples you can look at

[SB 13 does not work as expected (V280)]

Do not use positive transition of SB13, instead, use N.O. contact.

[V430 ASCII keypad wrong]

Already fix it updating OS to PLC.

[V430 ASCII keypad wrong]

Attached image showing wrong ASCII keypad.

Any idea to fix it.

[Pictures not shown correct after software upgrade]

Update OS, download a blank project, then download your project again.

[Error uploading from V290]

Alexander, it was not my case, because I had to downgrade Visilogic version (From 9.8.18 down to 9.7.0) to be able to upload PLC project.

[Error uploading from V290]

PLC: V290-19-B20 (A) O/S 5.04(23).

In info mode, under Version PLC shows  DB 27, creation ver 4.0.06, modification ver 9.7.09

 

Visilogic 9.8.18 Build 0

 

I cannot upload PLC program to my laptop.

Attached reported error.

 

What does it mean and how can I upload program?

 

I´m going to download Visilogic V9.7.0 and try again.

 

EDIT:

I could upload PLC program using Visilogic V9.7.0 Build 0

[HMI Display active bit]

I also noticed it earlier when using previous versions of Visilogic and it forced me to include the same workaround in my programming standard. To be honest, I hasn´t tested with latest version.
 

[Using the PID function on a Kiln]

Can you ramp PID setpoint up at the desired rate? You might need to adjust PID parameters on the road to achieve a better control.

I don't know about kiln process, but used this approach once to control a motor speed.

[V200-18-E3B]

Is the legacy snap V200-18-E3B fully compatible with recent V200-18-E3XB ? I mean, dimensions, connections, electrical specs ?

[ModBus TCP: 2 connections 1socket]

I use UDP instead TCP and doesn´t need so long delays between devices because no need to open/close socket, only a short delay between devices (50 ms or so).

[Digital inputs]

Connect 0Vdc of PLC Power Supply with 0Vdc of external PS.

[Drum duration filling]

Is there a simpler way to set same duration time for all drum other than doing it step by step, like row and column SET/RESET option?

 

 

[Modbus from V570 to Altivar 312]

Try writing to 8500 instead of 8501. Just a wonder. I have not had addressing issues with Schneider VFDs but with power monitors.

[Modbus from V570 to Altivar 312]

I suggest you to read any reading parameter, to make sure comms are ok.

 

Did you properly set parameters to control VFD via MODBUS? (fr1, add, tbr, .... )

[Modbus from V570 to Altivar 312]

John,

 

RUN: Write 000F(hex) to address 8501, and desired freq. to 8502.

STOP: Write 400F(hex) to address 8501. Stop mode depends of your VFD configuration.

[Modbus from V570 to Altivar 312]

John, take a look to:

 

http://download.schneider-electric.com/files?p_File_Id=27468538&p_File_Name=ATV31_communication_variables_EN_1624595_04.pdf

 

It´s for ATV31 but I´ve used for ATV312 as well.

[PID parameyer]

PV low limit: -60

PV high limit: +60

 

CV low limit: 0

CV high limit: 10000 (Equivalent to 100.00% with 2 decimal places), then you must linearize CV to your analog output to 0 ... 5 V, using X1 = 0, X2 = 10000, X = CV. Y1 and Y2 values depend of your analog output card.

[WIFI to RS232]

Hi Don, I´ve used MOXA NPort W2150A

[Get number of rows in data table]

The number of rows are fixed. You can use empty rows set with zeroes, so you can use "datatable find" tool to get last row with valid data.

[Problem with M91-2-UA2]

Check on help files, searching battery back-up. There´s a topic explaining this behavior

[Start Stop pop-up window]

OPLC: V570

Visilogic: 9.7.47

 

Hello all.

 

I want to show a small pop-up window for START/STOP buttons in such way I have a single place to control several motors. Such pop-up window must be hidden all time except when a singular motor is selected on HMI and close it again when operator pushes any button.

 

I´ve tried using frames and buttons inside it, but cannot find a way to hide the frame.

 

By now, I´m using Bitmap object as lower layer acting as a frame; Range of Text Images to show motor name, acting as frame title; and a couple of buttons, all above objects with hide bit.

 

Any other idea or suggestion?

 

 

 

 

 

[PLC - Device Communications--Question for the Community]

Cara, I prefer Modbus either over RS485 or Ethernet, also UniCAN for remote I/O.

I would like having Ethernet/IP in Unitronics products