Red Lion Data station, Micrologix 1200 & barcode scanner

[Bob73]

I'm working with the combination of a Micrologix 1200, a Data Station DSPSX000 and a Keyence SR-1000 scanner. My code in the data station is essentially lifted from a red lion example. Everything works except I'm getting a bunch of extra characters in the PLC. Within the data station, I'm attempting to write the data from the barcode scanner to ST101:1. The data is 30 characters.... What I wind up with is the 30 characters, + 50 spaces, + 80 spaces in ST101:2 and some spaces and garbage in ST101:3. I could work around this easily enough but it seems like I must have missed something. I've tried combinations of a read character limit in the data station along with setting a prefix and suffix in the reader and trying to use those in the portinput command in the data station. Everything I try yields roughly the same result. Some combinations remove the characters in ST101:3 but leave the spaces.

 

[JHarbin]

I'm working with the combination of a Micrologix 1200, a Data Station DSPSX000 and a Keyence SR-1000 scanner. My code in the data station is essentially lifted from a red lion example. Everything works except I'm getting a bunch of extra characters in the PLC. Within the data station, I'm attempting to write the data from the barcode scanner to ST101:1. The data is 30 characters.... What I wind up with is the 30 characters, + 50 spaces, + 80 spaces in ST101:2 and some spaces and garbage in ST101:3. I could work around this easily enough but it seems like I must have missed something. I've tried combinations of a read character limit in the data station along with setting a prefix and suffix in the reader and trying to use those in the portinput command in the data station. Everything I try yields roughly the same result. Some combinations remove the characters in ST101:3 but leave the spaces.

If you know that the data will always be 30 characters, why not use
Left(STRING,30) in your send logic? You may need to play with the number of characters, and you may need to insert an appropriate string ending character for your PLC (I can't say) but that is pretty easy.

If that doesn't solve your problem, you may want to check with Redlion to see if there is an issue with a particular version of Crimson that allows the driver to send junk along with the data.

 

[Bob73]

Yes, I'll probably do that. I realize this is easy to work around. I was mainly curious to see if anyone had seen this / knew the source of the garbage.