siemens step 7 array of counters

[controlsdude]

Not a siemens step 7 expert

I can do this same thing in AB RSLogix5000.

How do you create an array of counters in Step 7?

I can not do it as a DB object. Is their another way besides creating each one in the symbol table?

 

[CanadianTaff]

An array in Step 7 allows you to create array's of data types, not instructions so no you cannot do that.

The other thing with Step 7 arrays is that you cannot easily use indirect addressing (except if you use SCL programming format).

You would have to use AR1 type indirect addressing to access the data.

 

[CanadianTaff]

Regarding above, I of course mean't ST not SCL (duh).

ST allows you to do somethine like ARRAY_DATA[OFFSET] to access data.

 

[controlsdude]

Found outs its multiple instance for other than parameter based type variables like if you have timers and what an array of timers you have to do a mulitple instance with a DB then refer with a FB to call this DB over and over for how many timers you need. Kind of flaky but thats the way it is.

 

[CanadianTaff]

Personally I never use counters with Siemens, I would normally add 1 to an integer on a one shot. You can have an array of integers.