CPU CR40
CPU CR40 executes the user program and manages its onboard 24 digital inputs and 16 relay outputs.
The 6ES7288-1CR40-0AA0 is a Siemens SIMATIC S7-200 SMART CPU CR40 PLC with 24 digital inputs, 16 relay outputs and integrated RS485 serial communication.
Standard CPU · AC/DC/Relay
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6ES7288-1CR40-0AA0 is the earlier CPU CR40 ordering variant; verify firmware and project compatibility instead of assuming a CR40s unit is a drop-in replacement.
6ES7288-1CR40-0AA0 provides 24 digital inputs and 16 relay outputs, for 40 fixed onboard digital points.
6ES7288-1CR40-0AA0 uses an 85–264 V AC line supply and a 24 V DC input circuit; allow approximately 125 × 100 × 81 mm and about 18 W power loss.
6ES7288-1CR40-0AA0 provides 12 KB program memory and 8 KB data memory, with up to 2 KB of retentive memory for selected data.
6ES7288-1CR40-0AA0 supports four single-phase high-speed counters up to 100 kHz or two A/B-phase counters up to 50 kHz, subject to the configured input assignment.
6ES7288-1CR40-0AA0 is compact and non-expandable, with no signal-module or signal-board expansion; select another CPU if the final design exceeds 24 DI and 16 relay outputs.
For 6ES7288-1CR40-0AA0, send the exact nameplate, firmware, supply, I/O allocation, relay inrush data, RS485 settings, program backup, quantity and destination.
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Official Siemens documentation for the SIMATIC S7-200 SMART CPU CR40.
Siemens technical datasheet for 6ES7288-1CR40-0AA0, including electrical, I/O, memory, communication, environmental, dimension and weight data.
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Technical statements on this product page are based on publicly available official Siemens manufacturer documentation.
Siemens is the brand; SIMATIC S7-200 SMART is the PLC family; and 6ES7288-1CR40-0AA0 is the CPU CR40 AC/DC/Relay model with onboard I/O and communication.
CPU CR40 executes the user program and manages its onboard 24 digital inputs and 16 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.
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