Sparky
Member
Got an interesting one for every one. I have recently been programming ASCII to String to integer files on a AB SCL 500 with RSLOGIX versio 5.20.00. Well every thing was working good, scanner PLC and robot. Then after the production run the robot and SLC was shut down for standard preventive maintenace. When the SLC came back online their was an error IF39H Invalid string length ST31, and the program had been dumped. After getting the program back into it. I found the it was back in System mode, and the baud rate was changed from 9600to 19200. This happened on a Sunday and I wasn't here unfortunatly. so every thing that I am passing on is second hand information.
Some info Stirng file= ST29 ASCII file=A9, integer file from string=N34
here are my questions:
1. Is it normal when downloading the progam back to the SCL for the Channel configuration to change back to default?
2. Why would I get that error and it dump the program?
3. Why does it specify ST31 when I don't even have a file 31 and my String file is ST29?
Any enlightenment would be great guys. This last project of mine has been really sraining thank goodness it is almost to a close.
Some info Stirng file= ST29 ASCII file=A9, integer file from string=N34
here are my questions:
1. Is it normal when downloading the progam back to the SCL for the Channel configuration to change back to default?
2. Why would I get that error and it dump the program?
3. Why does it specify ST31 when I don't even have a file 31 and my String file is ST29?
Any enlightenment would be great guys. This last project of mine has been really sraining thank goodness it is almost to a close.