Siemens S7-400 FM450-1 two-channel counter / 6ES7450-1AP01-0AE0

6ES7450-1AP01-0AE0: Two counter channels with input-mode-specific maximum rates. Specifications follow the exact manufacturer table in the May 2017 catalogue; verify supplied revision, current lifecycle and availability separately.

Manufacturer part number: 6ES7450-1AP01-0AE0
Brand: Siemens
Category: PLC and HMI
Catalog status: Request a quotation

Technical specifications

Controller family: SIMATIC S7-400
Channels: 2 counter inputs; 32-bit unsigned or signed +/-31-bit
5 V counter input: RS-422; maximum 500 kHz
24 V counter input: Maximum 200 kHz; not the 500 kHz RS-422 rating
Input types: Symmetrical incremental encoder with two 90-degree-offset pulse trains; asymmetrical incremental encoder; 24 V initiator; pulse/direction
Digital inputs: 6 auxiliary control inputs; separate from the two counter channels
Digital outputs: 4
Power supply (nominal): 24 VDC auxiliary/load supply
Current from backplane bus: 300 mA maximum from 5 VDC backplane
Power loss: 6 W typical
Required front connector: 1 x 48-pin; connector must be selected separately
Width: 25 mm
Height: 290 mm
Depth: 210 mm
Weight: Approximately 650 g
Document pages: PDF 74, 75
Current lifecycle status: Not established by historical May 2017 catalogue; confirm current lifecycle and supply separately

Manufacturer technical catalog · Siemens ST400 May 2017; exact technical and ordering tables, PDF 74, 75 · en · PDF · ST400 May 2017Manufacturer source: Siemens · Model explicitly covered in family document · Covered models: 6ES7450-1AP01-0AE0 · Checked: 2026-10-22Official manufacturer source

This sheet provides a quick technical summary. For design, installation and final selection, review the latest official manufacturer documentation and verify the complete part number.