powder
Member
First, I appologlize in advance for my ignorance but Siemens PLC's are not what I am most familiar with.
WE have a treatment system we purchase from a OEM from Italy. We would like to make some small changes and encountered some problems. All of the blocks are displayed in STL. I know in the past on other Step 7 processor's I could swtich from STL to LAD to FBD with no problem. They were S7-400's though?
When I attempt open a block and/or attempt to switch from STL to LAD with the S7-300, I get these messages.
First:"There are no Parameter and local variable names available because their description is not available or cannot be assigned"
Click OK and
Second:"The open block does not contain any symbol information"
Click ok and the block opens in STL.
Any help or suggestions with this is appreciated in advance.
Regards
WE have a treatment system we purchase from a OEM from Italy. We would like to make some small changes and encountered some problems. All of the blocks are displayed in STL. I know in the past on other Step 7 processor's I could swtich from STL to LAD to FBD with no problem. They were S7-400's though?
When I attempt open a block and/or attempt to switch from STL to LAD with the S7-300, I get these messages.
First:"There are no Parameter and local variable names available because their description is not available or cannot be assigned"
Click OK and
Second:"The open block does not contain any symbol information"
Click ok and the block opens in STL.
Any help or suggestions with this is appreciated in advance.
Regards