Siemens 6ES5490-7SA21The Siemens part number 6ES5490 7SA21 is a versatile programmable logic controller (PLC) module tailored for industrial automation applications within the reliable S7 200 series. With a powerful CPU featuring 16 KB of RAM and 32 KB of ROM, this module efficiently supports up to 128 digital inputs and 128 digital outputs, operating at a frequency of 20 MHz while consuming only 1. 5 watts of power. Enhanced with an intelligent alarm system, it can
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