Combines 40 onboard digital points in one compact CPU.
01
Key Information
6ES7288-1CR40-0AA0 is the SIMATIC S7-200 SMART CPU CR40 in an AC/DC/relay execution.
The controller integrates 24 digital inputs at 24 V DC and 16 relay outputs rated 2 A. Its AC supply range is 85 to 264 V at 47 to 63 Hz.
This exact 0AA0 execution provides 12 KB program memory and 8 KB data memory and is engineered with STEP 7 Micro/WIN SMART.
02
Functions
Provides relay outputs for mixed AC or DC field loads within the published contact limits.
Uses a standard DIN-rail mounting format with an integrated 24 V DC sensor supply.
Supports LAD, FBD and STL programming in STEP 7 Micro/WIN SMART.
03
Specifications
Manufacturer
Siemens
Exact model
6ES7288-1CR40-0AA0
Product designation
CPU CR40 AC/DC/Relay
Onboard inputs
24 digital inputs, 24 V DC
Onboard outputs
16 relay outputs, 2 A
Supply voltage
85 to 264 V AC
Line frequency
47 to 63 Hz
Program memory
12 KB
Data memory
8 KB
Power loss
18 W maximum
Engineering software
STEP 7 Micro/WIN SMART
Mounting
Standard DIN rail
About IndustryParts
https://www.industryparts.com/Fixed I/O, firmware and project identity stay together
IndustryParts prepares 6ES7288-1CR40-0AA0 enquiries around the complete CPU label, project record and 40-point field map.
0AA0 execution retained
Project evidence requested
Relay-load map reviewed
04
Installation
Export and archive the current STEP 7 Micro/WIN SMART project before replacement.
Verify the 85 to 264 V AC supply, protective conductor and branch protection before wiring.
Map all 24 inputs and 16 relay outputs against the cabinet drawings rather than transferring wires by position alone.
Confirm firmware support, communication settings, retained values and every relay load before return to service.
05
Lifecycle
Keep the complete 6ES7288-1CR40-0AA0 order number with the project backup and panel record.
Record firmware, communication settings and memory-card use before removing the installed CPU.
Inspect relay loads and contact protection when the controlled equipment is serviced.
Treat 0AA1 CRs CPUs and SR/ST CPUs as separate migration candidates that require a full interface review.
06
Related Models
07
FAQ
What project evidence should accompany a 6ES7288-1CR40-0AA0 enquiry?
Provide the STEP 7 Micro/WIN SMART project, CPU label, firmware record, communication settings and a complete I/O list.
Can 6ES7288-1CR40-0AA0 be replaced by a CR40s 0AA1 without review?
No. The suffix and CPU generation must be checked against communication, memory, firmware and project requirements before migration.
Which loads deserve special attention on 6ES7288-1CR40-0AA0?
Document inductive and high-inrush loads on the 16 relay outputs and verify approved suppression and contact ratings.
How should a spare 6ES7288-1CR40-0AA0 be prepared before an outage?
Load the approved project only after matching firmware and hardware identity, then retain the untouched backup and checksum record.
What proves 6ES7288-1CR40-0AA0 is ready after replacement?
Verify input states, every commanded relay output, communication paths, time settings, retained data and the machine safety sequence.
