Sample program for FM 350-2

Late

Hi,

HAve you installed the FM 350-2 option package, when you did then there will be a example installed for STEP7 please look when you open a project in the "Sample Projects" tab, the third from the left, or the 2nd of the right

Also directly with the FM option package the handbook and a getting started is installed.
When not, then see the link Getting Started FM 350-2and all your questions will be answered.

Mojo

Glad to have helped.

Now if you get the CNT2_RD function to work, let me know!

new question is splittet to PLC SF appear when I call FC2

Mojo

I don't know why the high-speed counters have to be so complicated.

I too have had trouble implementing the FM350-2. I studied the examples for hours and ended up just figuring it out on my own.

When the gate is switched on the count is reset. For example, if the counter accumulated value is 9876543 and you turn the gate off, the count stays at 9876543 and will not change. When you switch the gate on, the count is reset to zero and the counting begins again.

Here is my code. My application was a length measurement where I had to know how far a belt had travelled in meters per minute. Each second I sample the counter's PIW value, convert to real, multiply by 60 (to get 1 minute), and then divide by a constant pulses/meter to determine how far the belt moved. I never could get the Counter Read FC to work - that is why I amreading the PIW directly. If the counter starting address is 376 then PIW384 is the accumulated value for channel 0.