WinCC flexible autolognon
- Thread starter dracekvo
- Start date
DeepThought
Member
I have connected a barcode scanner to wincc on the serial port of the HMI and then using the mscomm from windows you may need to install the activeX first i cheated a little and loaded microsoft vb express this then registered all the components for me. Then you need a script to open and close the port again mine opens the port automatically on the initial startup of the HMI. You can then read the barcode and place it into a db word for testing or checking user and enable what ever you need too.
I have the script if you need and example, this does depend on your HMI and whether it has a serial port or not.
I have the script if you need and example, this does depend on your HMI and whether it has a serial port or not.
DeepThought
Member
mscomm Script example
Three pictures have been added notice on the barcodescreen the mscomm activeX this is put in the overview screen if you want to use it regardless to the screen your on or just put it on the screen you wish to use it this however will require you each time to open the port on changing to that screen and closing the port when leaving that screen. To get to the overview screen go onto your startup page and to the top of the woring area left click and hold the top of the working area of the screen and drag down.
Three pictures have been added notice on the barcodescreen the mscomm activeX this is put in the overview screen if you want to use it regardless to the screen your on or just put it on the screen you wish to use it this however will require you each time to open the port on changing to that screen and closing the port when leaving that screen. To get to the overview screen go onto your startup page and to the top of the woring area left click and hold the top of the working area of the screen and drag down.
Maybe you dont understant me.
I wrote example:
1. touch panel is locked (is morning)
2. user comes to his shift and scans his ID card with bar code
3. PLC compare code with internal database, when matched, plc send user name, role in to some tags
4. when tags is sets, touch panel automatically unlocks (logon) with user name and privileges.
I wrote example:
1. touch panel is locked (is morning)
2. user comes to his shift and scans his ID card with bar code
3. PLC compare code with internal database, when matched, plc send user name, role in to some tags
4. when tags is sets, touch panel automatically unlocks (logon) with user name and privileges.
DeepThought
Member
The above examples are code that i did for my specific need.
You need to have barcode scanner connected to your HMI when the scanner reads a barcode you place that value into a DB word(this will be in your PLC) then you can compare against you database (probably) another DB in your PLC then send a PLC signal(memory bit) to the Screen to unlock it. The point being you will always have the port open to read a barcode and move it into a DB word first. Word of warning at each scan of the barcode when you move the value into you DB you need to clear the buffer ready for the next barcode if not the barcode will not read a second time without first clearing the buffer.
You need to have barcode scanner connected to your HMI when the scanner reads a barcode you place that value into a DB word(this will be in your PLC) then you can compare against you database (probably) another DB in your PLC then send a PLC signal(memory bit) to the Screen to unlock it. The point being you will always have the port open to read a barcode and move it into a DB word first. Word of warning at each scan of the barcode when you move the value into you DB you need to clear the buffer ready for the next barcode if not the barcode will not read a second time without first clearing the buffer.
DeepThought
Member
Unlock Screen
I have added another script of mine this is for reading the buffer however i have added a line that is circled in red this is for the logon.
The 2 words in brackets are the password value and the username in that order. So once you have made the compare with the barcode reader you can then move that persons password and username into the database once the script reads that data (with script you need to code here first you can then activate that line to unlock the screen.
I have added another script of mine this is for reading the buffer however i have added a line that is circled in red this is for the logon.
The 2 words in brackets are the password value and the username in that order. So once you have made the compare with the barcode reader you can then move that persons password and username into the database once the script reads that data (with script you need to code here first you can then activate that line to unlock the screen.
Can you send me in text please? I can't read it. Or example on cocomoon(at)seznam.cz
DeepThought
Member
login text file
the command is near the bottom.
the command is near the bottom.
DeepThought
Member
Logon is wincc function you just pass your variables and it will auto-login
DeepThought
Member
if you right click in the script page then choose "List System Functions" scroll through that list it is there it is also accessable within wincc under the properties of a screen or button etc under the events and select it from the list there. but from script access from right clicking the script page as stated first.
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