M-1400 003 Beckhoff
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The Beckhoff M-1400 003 is part of the M Parallel IO Modules series and features 32 I/O points with 8 bits per port. It provides a fibre optic II/O system data connection, a data rate of 2.5 MBaud, and supports an input voltage of 24 VDC. The module has short-circuit proof output protection and a size of 270 x 76 x 68 mm.
Internal Product Review
The M-1400 003 is a Beckhoff parallel I/O module with 32 I/O points and 4 ports. Fast signal handling comes from a 25 µs/32-bit transfer time and a 0.7 ms input delay. A strong choice for responsive control architectures requiring dependable 24 VDC operation.
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Product Description:
The M-1400 003 module is produced by Beckhoff for the M Parallel I/O Modules series. It is a compact parallel I/O slice that terminates field signals and links to the controller on a Fiber Optic I/O network. In automated cells, it collects sensor states and drives actuators, giving the PLC a deterministic gateway to the machine wiring. Its role is centered on direct signal exchange rather than local processing, which keeps the module focused on field-level signal handling.
The module organizes its field wiring in four identical ports, each structured for 8 bits per port, so one address cycle moves an entire byte to or from attached devices. This layout yields 32 I/O points, providing fixed bit mapping between the process image and the terminal blocks. Time-critical sensing is handled by 4 fast inputs that bypass the standard scan and forward edge events directly to the fiber link. Communication across the optical backbone occurs at 2.5 MBaud, a rate that supports consistent transfer timing on extended runs. All input circuits reference the plant supply of 24 VDC, and the logic applies a 0.7 ms input delay to debounce mechanical contacts without external hardware.
On the output side, each channel can source up to 500 mA, and the driver stage is short-circuit-proof so a load fault does not interrupt the whole module. Data blocks move between the controller and the module with a latency of 25 µs per 32-bit block, which supports fast signal exchange on the optical segment. Supervisory integrity is maintained by a watchdog that defaults to 100 ms; if no valid telegram arrives within this window, the outputs revert to a defined state while module current remains limited to 0.1 A. The 6.8 ms input latch preserves brief signals until the next scan, and the 270 × 76 × 68 mm enclosure fits standard control-panel rails.
