Hi.
We have a BBC ED1000 PLC from 1987. We are now planning to replace it, but having some problems rewriting the program into a new PLC. We have a print from the program, but no documentation om the function blocks.
I have attached one page from the program.
Is there someone that is familiar with ED1000 programming?
What I've found out so far:
X0,5 = Digital input
Y0,1 = Digital output
F0,2 = Global variable
f30,0 = Local variable
& = AND
>=1 = OR
My questions:
1. The "1" inside a square = ????
2. S R = SR flip flop ???
3. The "T" inside a square = Timer? How does it work?
4. The outputs, for example Y0,1 is only controlled on this page in the program. Y0,1 goes high when F0,2 and F0,3 is high. But when does it go low again? First cycle with sum of F0,2 and F0,3 = 0?
We have a BBC ED1000 PLC from 1987. We are now planning to replace it, but having some problems rewriting the program into a new PLC. We have a print from the program, but no documentation om the function blocks.
I have attached one page from the program.
Is there someone that is familiar with ED1000 programming?
What I've found out so far:
X0,5 = Digital input
Y0,1 = Digital output
F0,2 = Global variable
f30,0 = Local variable
& = AND
>=1 = OR
My questions:
1. The "1" inside a square = ????
2. S R = SR flip flop ???
3. The "T" inside a square = Timer? How does it work?
4. The outputs, for example Y0,1 is only controlled on this page in the program. Y0,1 goes high when F0,2 and F0,3 is high. But when does it go low again? First cycle with sum of F0,2 and F0,3 = 0?
