SIEMENS 6ES7221-1BH22-0XA8 Expansion module

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SIEMENS 6ES7221-1BH22-0XA8

The Siemens 6ES7221-1BH22-0XA8 is an expansion module for the Siemens S7-200 series PLC. It is mainly used to expand the input/output points of PLC, improve the flexibility and scalability of the system.

Product name

English: Siemens S7-200 expansion module EM 221
Siemens S7-200 Expansion Module EM 221
Product description
The module can extend the digital input/output function of the PLC. Specifically, it can provide additional digital input points for the acquisition of switching signals from external devices, such as buttons, switches, sensors, etc. These signals can be read by the PLC program and used to control other devices or perform corresponding logical operations.

Product parameters and specifications
Model: 6ES7221-1BH22-0XA8

Type: Digital input module
Points: Points vary depending on the model. Please refer to the product manual for exact count.
Input type: Usually source or drain input (depending on the model)
Input voltage range: Generally 10-30V DC
Isolation: Input channels are isolated from each other to improve anti-interference ability
Installation mode: Installed in the expansion slot of the S7-200 PLC
Operating temperature: 0℃ ~ 55℃