Siemens 6ES5464-8MA21 Simatic S5 Io Module PLC Interface

Siemens 6ES5464-8MA21 is a four-channel AI 464 analog input module designed for SIMATIC S5 PLC systems, intended to be installed in ET 100U racks and compatible with S5-90U/95U/100U configurations to extend analog sensing capabilities in legacy automation projects. Each of its four inputs is galvanically isolated from the backplane and supports a small-signal, linearized measurement range of ±50 mV per channel, enabling precise capture of low-level sensor voltages with improved accuracy thanks to integrated linearization. The module interfaces with ET 100U or ET 200U deployments and connects to the S5 backplane through standard I/O connectors, making it suitable for processes where voltage signals from sensors or signal sources must be monitored by an S5 controller; the four channels can be independently utilized to monitor multiple sensors simultaneously. As part of Siemens’ AI 464 analog input family for SIMATIC S5, the 6ES5464-8MA21 provides four voltage input channels for expanding analog data acquisition in older automation networks without requiring newer generation hardware, preserving compatibility with older programming environments and maintenance ecosystems.