[Keypad timer]

as Flex said, or you can set from HMI:

[Unistream, Unilogic, using HMI Keypad entry to trigger things]

The closest tag I found is "Keyboard bit" (see System | General tags), but it does not detect if keyboard was closed by hitting Enter or Cancel. Adding some comparison and using that tag could detect if a value was changed using the keypad.

[Sending Email when connected to industrial PC]

Set up a network bridge on the PC side between WiFi and LAN adapters. I´ve done it to share internet connection to devices without WiFi using a laptop, however I´ve never tried connecting a PLC to it.  It should work, I guess.

[OS version's]

Install the version of Visilogic originally used to program the PLC. To find out what version it is, open the vlp file, go to view | signature log menu.

If you definitely want to use the latest version, you must upgrade the OS before downloading the application. I do not recommend this option.

[1 PLC and 2 URB-TCP]

When configuring second URB, make sure do not overlap PLC addresses (XB, XI) assigned to 1st URB. You can manually modify those operands.

Attached edited file. Only modified those rungs associated with sockets and modbus config. I did not check addressing nor structs.

PLC_4_V51_edited.vlp

[1 PLC and 2 URB-TCP]

Post your code here so we can take a look and give advice

[PID question]

For this type of application, I use a single PID; then compare CV with some limits to decide when to start the booster pumps and control their speeds based on PID CV, mini speed,  main pump max speed, CV to start booster pump and some other parameters.

The integral error must be reset under some circumstances such as at the start of regulations.

Before you perform autotune, be sure you set all PID parameters to initial values, specially input and output ranges and sample time. I also set initial Kp, Ki and Kd values.

I recommend that you to use PID server to tune your system.

More than knowledge of Unitronics, you need process control background to achieve this goal successfully.

[Snap-In module HSC frequency measurement]

Long time ago I used frequency measurement using V200-18-E3XB and it gives Hz directly with no decimals. Had to wire both I0 and I1 to the same encoder output to achieve it

[Data collection using V120-12-R1?]

look at "help | examples" menu. You can find some examples of datatable use (C:\Program Files (x86)\Unitronics\Unitronics VisiLogic_C\Examples\Version 900\Project examples\Data Table)

[Headless Unistream with Android Tablet Uni-Apps]

Yes, it´s possible

[Calculating FPM (feet per minute) or just Feet on a press.]

It might be one of the following:

1. You are loosing pulses, since you are using normal inputs. Check shaft rpm against maximum allowable frequency from normal inputs.

2. Loss of precision due to formula calculations. Note that ML are integers, so decimals derived from calculations are truncated.

 

[VisiLogic 9.8.80 lost graphics]

Some time ago (I don´t remember Visilogic version) I had a similar issue. If I remember well, my solution was to restore all system images (project | system images menu) then download again the project

[Snap IO not communicating]

In addition to Kratmel comments, make sure the snap is properly seated on the back.

 

[Retain counter]

Leave empty "initial value" field

[How to change crc bits in unilogic ?]

I don´t understand what you need. As I see, it is modbus protocol, and checksum (CRC) is automatically added by PLC, calculated right the way stated by the standard

[Calendar Usage and Variable entry]

It´s not working as expected because the routine 10-Leak Test Validate is not being called anywhere.

 

[V350-J-RA22 Analog Inputs failing]

Recently I had problems with snap-in module analog inputs stop working (scaled value fixed at 0). I discovered it was caused by module high temperature, even the cabinet was properly cooled, so until a new module arrived, installed forced air directly to the module and the problem was gone.

Check cabinet and module temperature

[Unistream Password Box]

Unistream has user acces control - UAC - where you can assing roles, users and passwords to limit actions, disable buttons and so on based on the user logged in.

Take a look to this feature.

[Outputs Not Working on V700]

In addition of Flex said, verify that your outputs are not used in other places, if so, based on the logic, they would turned off despite you are turning on here.

[Access to recipe file on SD card—outside of PLC program]

Probably you would need Unistream Data Converter Suite (https://www.unitronicsplc.com/Download/SoftwareUtilities/UniStream_Data_Converters_Suite_1_0_18.zip) to get access and convert datatable to Excel to be able to modify it.

 

 

[0 to 5V Analogue output]

There´s a function called Linearize, take a look at it (ladder toolbox under math section). That´s what you need.

[Load from DTI issue]

This is the way I use function:

I don´t know if your issue is name related as I only use single word to filenames.

One suggestions: to load the whole table, start from 0 and use "Number of Rows" tag from data table target .

[Modbus TCP will stop responding to master but can ping]

If you post your code, I can take a look.

 

So far, make sure SB168 is set at power-up

[Non matching projects - when they should match]

I noticed that using a different version of Unilogic to get online (other than the version used to program and download to PLC) gives not match error.

I suggest you to use same versions on both computers.

 

[Now I want to convert String to integer?]

I learned something new today, thanks Fernando, I didn´t know about such string library capacity to store indirect strings.