SIMATIC S5-155U CPU 946
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We ship after payment is received, usually on the same day.
12 months for new products and 6 months for used products.
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Siemens 6ES5946-3UA23 is a CPU 946 central processing unit for SIMATIC S5-155U PLC systems. It is a legacy component mainly used for maintaining existing machinery and automation installations based on S5.
Siemens lists this product as discontinued. When replacing a CPU in an operating machine, hardware compatibility, the PLC program and memory configuration must all be considered. Another S5 CPU is not necessarily a drop-in replacement even if its designation looks similar.
Manufacturer information is available from Siemens Industry Mall. Other SIMATIC S5 CPUs in the POLRAD catalog include 6ES5928-3UA21 CPU 928B and 6ES5945-7UA11 CPU 945. They should not be treated as automatic substitutes for CPU 946.
Before replacement, back up the project, program data and hardware configuration. If you need help identifying the CPU variant, send us the complete module designation.
