Counter Module Siemens

The FM 350-2 function module is an 8-channel counter module with dosing functions for use
in the S7-300 automation system. Maximum counting range of the FM:
* -31 to +31 Bit:
-2 147 483 648 to +2 147 483 647 (-231 to 231 - 1).
The maximum input frequency of the counter signals is up to 20 kHz per count channel
depending on the encoder signal.
The FM 350-2 can be used to perform the following tasks:
* Continuous counting up/down
* Single counting up/down
* Periodic counting up/down
* Frequency measurement
* Rotational speed measurement
* Period measurement
* Dosing
You can start and stop the count either via the user program (software gate) or via external
signals (hardware gate).
Count, gate, and direction signals can be connected directly to the module.