RedKingRory
Member
Hello everyone,
This is my first post at this forum, although I don't know why I took so long to join. I've been working in this field for a few years now and have frequented this forum as a reference in the past. I'm looking forward to getting involved!
My problem:
I'm working with a nearly at-capacity PLC5/20. In the controller properties, there are the following details:
Program Files: 18, Words: 7949
Data Files: 41, Words: 7734
Overhead: 360
Memory Used: 16043 Words
Free Memory: 341 Words
I am attempting to address (in existing data tables) about 3 or 4 rungs of logic, including 2 timers, 1 additional memory bit, and a few compare instructions. It's a relatively minor change, but I'm concerned about adding logic into the PLC with this little memory left.
My question is; do I need to be concerned about "breaking the camel's back" so to speak, and faulting the PLC if I exceed the remaining memory during an online edit? Assuming there is space in the data table and that it's not being overrun, should I be concerned about this type of fault for an on-the-run change? Or will there be some kind of warning that prevents me from disrupting the running of the PLC?
Many thanks in advance for your time.
This is my first post at this forum, although I don't know why I took so long to join. I've been working in this field for a few years now and have frequented this forum as a reference in the past. I'm looking forward to getting involved!
My problem:
I'm working with a nearly at-capacity PLC5/20. In the controller properties, there are the following details:
Program Files: 18, Words: 7949
Data Files: 41, Words: 7734
Overhead: 360
Memory Used: 16043 Words
Free Memory: 341 Words
I am attempting to address (in existing data tables) about 3 or 4 rungs of logic, including 2 timers, 1 additional memory bit, and a few compare instructions. It's a relatively minor change, but I'm concerned about adding logic into the PLC with this little memory left.
My question is; do I need to be concerned about "breaking the camel's back" so to speak, and faulting the PLC if I exceed the remaining memory during an online edit? Assuming there is space in the data table and that it's not being overrun, should I be concerned about this type of fault for an on-the-run change? Or will there be some kind of warning that prevents me from disrupting the running of the PLC?
Many thanks in advance for your time.