CPU CR20
CPU CR20 executes the user program and manages its onboard 12 digital inputs and 8 relay outputs.
The 6ES7288-1CR20-0AA0 is a Siemens SIMATIC S7-200 SMART CPU CR20 PLC with 12 digital inputs, 8 relay outputs and integrated RS485 serial communication.
Standard CPU · AC/DC/Relay
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For 6ES7288-1CR20-0AA0, provide a clear nameplate photo and firmware information so the complete suffix and hardware generation can be checked before quotation.
6ES7288-1CR20-0AA0 is listed for small standalone S7-200 SMART applications using fixed digital I/O, relay switching and serial communication.
Before replacing 6ES7288-1CR20-0AA0, confirm the nameplate and the expected 12 digital inputs and 8 relay outputs against the installed unit.
For 6ES7288-1CR20-0AA0, confirm the 85–264 V AC cabinet supply, 24 V DC sensor circuit, grounding and relay-load voltage/current before approving a replacement.
When validating 6ES7288-1CR20-0AA0, record the RS485 protocol, baud rate, node address, termination, cable type and every connected HMI, meter or drive.
6ES7288-1CR20-0AA0 should be treated as a fixed compact CPU; verify the final I/O list because signal-module or signal-board expansion is not supported.
A quotation for 6ES7288-1CR20-0AA0 needs the nameplate, firmware, wiring drawings, I/O list, relay inrush data, serial settings, backup status, quantity and delivery destination.
Share the complete order number and application details for compatibility, availability and lead-time checking.
Official manufacturer-reference information for the Siemens SIMATIC S7-200 SMART CPU CR20.
No current official Siemens 6ES7288-1CR20-0AA0 datasheet was located in the manufacturer’s public documentation. For product documentation and compatibility details, please contact Product Specialist Frida.
CONTACT FRIDASend the complete model, quantity, and your technical or purchasing question.
Technical statements on this page are limited to Siemens manufacturer-reference documentation. No third-party product sources were used.
Siemens is the brand; SIMATIC S7-200 SMART is the PLC family; and 6ES7288-1CR20-0AA0 is the CPU CR20 AC/DC/Relay model with onboard I/O and communication.
CPU CR20 executes the user program and manages its onboard 12 digital inputs and 8 relay outputs.
STEP 7 Micro/WIN SMART is used to configure, program and commission the S7-200 SMART CPU.
The integrated RS485 port supports PPI, Modbus RTU, USS and free-port communication.
Moore Automation Limited supplies industrial automation spare parts to customers worldwide, with dedicated sourcing, part-number verification, pre-shipment confirmation and responsive sales support.
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Include the complete part number, quantity and delivery destination.

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