Keyence barcode scanner

I am using an SR-1000w keyence barcode scanner with compactlogix L18 version 20.1.

I am getting the barcode information to an ASCII string. How do I convert the ASCII String to a decimal value.

I am looking to compare the UPC barcode to see if I need to reject a product that is nort the same match. I was thinking that I coule convert the ASCII String to Decimal to complete this task.

Any help is appreciated.

http://www.plctalk.net/qanda/showthread.php?t=42916

The above thread should help you out.
Regards,

Appears to be more complicated than expected. I will keep digging. Need to get this resolved ASAP.

Try the STOD instruction.

But the EQU command can compare String type tags directly.

I have been trying to use the STOD.

I cant clear an error with this command. The Keyence scanner is connected via EtherNet Module. The value is set up for Decimal. It will read the ASCII Value when I change the style from Decimal to ASCII.

I must be missing something. I am integrating new equipment to an existing line. I will be getting a message for the UPC code and need to compare it to the UPC that I am scanning. If this helps with what I am trying to accomplish.

If the UPC code you're getting as a "message" is also a string, as bernie said, you can just use the EQU instruction to directly compare the two strings and see if they match. If not, you'll have to convert the string to an integer, or the integer to a string. Either way.

You may need to provide some more detail if you need any more detailed responses (perhaps a screenshot of the logic, or zip and post the whole program if possible).

The STRING data type has an integer holding the number of characters (the length - LEN - section) followed by an array of SINTs (8 bit characters - the data - DAT - section). If the ASCII message does not have this exact format then you may need to copy the ASCII characters into the 'data' portion of an empty string and move a count of the characters into the empty string's LEN (length) section. I had to do this for at least one barcode reader's message. Once you have it correct either the STOD or the EQU can be used.