S7-400 FM 450-1 counter module
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Siemens 6ES7450-1AP00-0AE0 is an FM 450-1 function module for the SIMATIC S7-400 system. It performs hardware counting functions on two independent channels, allowing fast pulse processing without relying on standard CPU inputs.
According to the data sheet, the module provides 6 digital inputs and 4 digital outputs. It supports 5 V and 24 V encoder supplies, and its standard inputs can operate up to 200 kHz when parameterized accordingly. The 6ES7450-1AP00-0AE0 version is discontinued and is documented as a predecessor of the newer 6ES7450-1AP01-0AE0.
Technical documentation is available from Siemens Industry Online Support. Other S7-400 function and signal modules in our catalog include 6ES7451-3AL00-0AE0 and 6ES7431-1KF00-0AB0.
When replacing an older FM 450-1, verify the full catalog number, channel configuration and encoder wiring. If you need help comparing versions, send us the number of the installed module.
