Siemens | Simatic S7 6ES7221-1BF21-0XA0

Product Details

• Part Number 1 6ES7221-1BF21-0XA0

Product Description

The Siemens 6ES7221-1BF21-0XA0 is a Digital Input Module used with the Simatic S7 automation platform.

In day-to-day system operation, a digital input module receives discrete on/off states from field contacts and devices, then makes those states available to the controller for monitoring, sequencing, alarms, and interlocks. The system's documented hardware assignment should guide placement.

SIMATIC S7 integrates programmable control, modular I/O, and industrial communication functions. This product belongs to the PLC modules layer of the installed S7 automation solution. System drawings should be consulted before replacement.

For maintenance or replacement work, the exact module designation should be checked against the installed hardware, wiring records, and control-system documentation before the component is placed into service. Maintenance planning should reference the installed hardware configuration.

Product Documentation

• Part Notes

  SIEMENS SIMATIC S7-200 DIGITAL INPUT EM 221, FOR S7-22X CPU ONLY, 8 DI, 24 VDC, SINK/SOURCE INPUT

• Common Part Typos 6ES7221-1BF21-0XAO, 6ES7221-1BF21-OXA0, 6ES7221-1BF2I-0XA0, 6ES7221-1BF2l-0XA0, 6ES7221-IBF21-0XA0, 6ES7221-lBF21-0XA0, 6ES72211BF210XA0, 6ES72211BF210XAO, 6ES72211BF21OXA0, 6ES72211BF2I0XA0, 6ES72211BF2l0XA0, 6ES7221IBF210XA0, 6ES7221lBF210XA0, 6ES722I-1BF21-0XA0, 6ES722I1BF210XA0, 6ES722l-1BF21-0XA0, 6ES722l1BF210XA0

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