hoelscherlj
Member
Hello everyone,
I've been wondering how to do this for quite some time now. I had a little time on my hands and a future project will need this so I thought I would give it a go.
I am trying to write a program that will look at the input buffer of channel 0 to see if the barcode reader has sent information. It will then send this information to a string file and then decide whether it is a batch number or a material number.
I have a fairly decent understanding of the ASCII instructions but I have one question about them, more specifically the use of the control file status bits. The Inhibit bit is causing me some greif. I can't find any information on it in my Rockwell manuals, or at least why it is used and how it is triggered. I know my sequence of events was to blame, but I would like to understand why it has been triggered.
I don't have a copy of the program that I was having an issue with but I could reproduce it if needed. This is what I am using now, and it seems to work okay to get the info into the string file.
I think the problem I was having before was that the check buffer instruction was trying to run at the same time as the read instruction but that is just a guess. I'm really just looking for an explaination of the inhibit bit. Any other opnions on better or more effecient programming would be appreciated.
Thanks,
Luc
I've been wondering how to do this for quite some time now. I had a little time on my hands and a future project will need this so I thought I would give it a go.
I am trying to write a program that will look at the input buffer of channel 0 to see if the barcode reader has sent information. It will then send this information to a string file and then decide whether it is a batch number or a material number.
I have a fairly decent understanding of the ASCII instructions but I have one question about them, more specifically the use of the control file status bits. The Inhibit bit is causing me some greif. I can't find any information on it in my Rockwell manuals, or at least why it is used and how it is triggered. I know my sequence of events was to blame, but I would like to understand why it has been triggered.
I don't have a copy of the program that I was having an issue with but I could reproduce it if needed. This is what I am using now, and it seems to work okay to get the info into the string file.
I think the problem I was having before was that the check buffer instruction was trying to run at the same time as the read instruction but that is just a guess. I'm really just looking for an explaination of the inhibit bit. Any other opnions on better or more effecient programming would be appreciated.
Thanks,
Luc
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