Customer is trying to save money and get a PLCs with less memory if the existing program will fit.
They are concerned that the PLC program may be using data from tables that would be removed or resized when moving from 64k to 16k. Is that a real issue? They want us to look through the PLC programs and see if they are using some type of direct references to an address that may no longer be there and I’m not sure how to look for that or anything else that could be an issue when moving to a PLC with less RAM. I’d hope Studio would warn you about addresses used but it just says there may be a loss of data or I/O configuration and gives you the option to not resize. ???
They are concerned that the PLC program may be using data from tables that would be removed or resized when moving from 64k to 16k. Is that a real issue? They want us to look through the PLC programs and see if they are using some type of direct references to an address that may no longer be there and I’m not sure how to look for that or anything else that could be an issue when moving to a PLC with less RAM. I’d hope Studio would warn you about addresses used but it just says there may be a loss of data or I/O configuration and gives you the option to not resize. ???