Compact Control for Machine Automation

The SIMATIC S7-200 SMART CR20s is part of Siemens' compact PLC platform. Its integrated digital I/O architecture is suited to control applications where machine logic, field inputs and relay outputs need to be handled within a compact controller.

The CR20s configuration combines 12 digital inputs and 8 relay digital outputs, providing a practical arrangement for discrete machine control, sequencing and actuator switching.

For replacement requirements, the exact order-number suffix should always be checked against the installed CPU. Siemens identifies the CR20s AC/DC/Relay configuration as 6ES7288-1CR20-0AA1.

Machine-Level Control

The CR20s is suited to compact automation systems requiring integrated digital inputs and relay outputs. It can be applied to machine sequencing, discrete control, sensor status monitoring and actuator switching.

In an existing S7-200 SMART installation, the CPU can be a key control element. If the controller stops executing the machine program or its integrated I/O becomes unavailable, the affected equipment may lose sequence control and production can be interrupted.

Why Engineers Search by Part Number

Siemens identifies the CR20s AC/DC/Relay configuration as 6ES7288-1CR20-0AA1.

The configuration includes 12 digital inputs at 24 V DC and 8 relay digital outputs.

The specified AC supply range is 85–264 V AC, with a frequency range of 47–63 Hz.

Siemens specifies STEP 7 Micro/WIN SMART for engineering the S7-200 SMART CPU family.

Different order-number variants can represent different configurations. Siemens identifies 6ES7288-1CR20-0AA1 for the CR20s AC/DC/Relay version, so the installed designation should be verified.

The CR20s configuration is specified with 20 KB of program/data memory.