All Simatic Timers are used.

dchartier

weirdooo

Hello experts.

I just want to know if there's a way to increase the maximum number of simatic timers, I think it's not possible but a mate says it is. So is it possible?

Being, this, not possible my only options are IEC timers or to create a logic to make a timer function? Right?

Thanks in advance, regards.

Hello weirdooo;

Yu are correct: Simatic (S5)timers are limited in number, and this number is dependant on the CPU model; for example:

- CPU 312: 256 S5Timers

- CPU 319-2PN/DP: 2048 S5Timers

Your options, as you stated, are IEC Timers (as many as you need, as long as you do not exceed your code limit on your CPUor the maximum number of instand=ce DBs allowed), or creating a function that you repeatedly call in your program.

Hope this helps,

Daniel Chartier

Piotr.M

Hi

I have a bit which is cycled every 100ms for one scan and use it for coarse timers (watchdogs, etc.).
Also You can use "Get Tick Count" function, memorize tick and use it to calculate the time. Third option is to use SFB4 TON and other timer FB but each will need multiple instance or instance data block. You MUST use different instance DB for each call of the FB (or different multiple instance variable inside parent FB)

The Tick Count is SFC64 which gives you Tick Count which is updated by PLC every ms:

      CALL  "TIME_TCK" // SFC 64
       RET_VAL:="GLOBAL".CLOCK.TICK_COUNT

This can be used for Your own timers, to measure duration, etc.