In the company I worked for before I worked here, there was a standardisation on a CPU 315-2DP. (carpet factory)
Now I work for a machine-building company. The price is important now.
For a previous project I used a 317 PN/DP, why... because I project before that one had a 315 PN/DP and runs around 52ms. This last project was bigger, so I've choosen a 317 PN/DP, that runs on 10ms with this machine.
New project now:
64 I's
128 O's.
I was thinking about a 312 CPU, BUT it has only 32kB they say. And I was willing to place an MMC of 128kB...
I wil also use Graph in this CPU.
The HMI is an OP73.
Little machine with many I/O's in a step program.
The MMC must be giant enough to put the program on ?
When to choose for 32kB or 128kB or more CPU memory... ?
What's the difference between both memory's ?
How to choose the right PLC if the program isn't written, so you don't know how giant it will be...
Regards,
G
Now I work for a machine-building company. The price is important now.
For a previous project I used a 317 PN/DP, why... because I project before that one had a 315 PN/DP and runs around 52ms. This last project was bigger, so I've choosen a 317 PN/DP, that runs on 10ms with this machine.
New project now:
64 I's
128 O's.
I was thinking about a 312 CPU, BUT it has only 32kB they say. And I was willing to place an MMC of 128kB...
I wil also use Graph in this CPU.
The HMI is an OP73.
Little machine with many I/O's in a step program.
The MMC must be giant enough to put the program on ?
When to choose for 32kB or 128kB or more CPU memory... ?
What's the difference between both memory's ?
How to choose the right PLC if the program isn't written, so you don't know how giant it will be...
Regards,
G