SIEMENS 6ES5242-1AA32 Counter Module

6ES5242-1AA32 | Siemens | Counter Module, SIMATIC S5 S5 IP 242A, 500kHz

Counter modules IP 242A and IP 242B are equipped with the same hardware.
In functionality, the IP 242B module is a direct extension of the IP 242A. This applies in particular to the following areas.
– Implementation of calculation functions directly on the IP 242B
– Expansion of the counting length of counters 6 and 7 from 24 bits to 32 bits
– Storage of up to eight parameterization data records in the EEPROM of the IP 242B
– Provision of a measured value memory with trace function (collection of past values)

The IP 242A and IP 242B counter modules are used for the acquisition and conditioning of high–speed counting pulses. They contain seven independent counters. Counters 1 to 5 can be switched on and off via external addressing of counting gate inputs or software starts/stops. The initial values must be specified for the counters in the S5 program. 

The point in time at which these values are loaded in the counters can also made dependent directly on the external signals. Each counter is equipped with an output with which it can report events such as, for example, overflow or end of counting. This message can be reported to the programmable controller both via an interrupt and externally via a hardware output.

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