Siemens 6ES7621-6BD02-0AE3 Programmable Logic Controller Module

Siemens 6ES7621-6BD02-0AE3 is a SIMATIC C7-621 AS-i Compact Unit that tightly integrates a S7-300-compatible CPU, an on-board OP3 operator panel, the IM621 interface module, and the CP342-2 AS-Interface Master into a single housing. It provides 16 digital inputs, 16 digital outputs, 4 analog inputs, and 1 analog output, offering a compact mix of digital and analog I/O for AS-i networks. The embedded S7-300 CPU includes 32 KB of memory for program storage and runtime, while the CP342-2 handles AS-i field devices and communicates with the master network, and the OP3 panel serves as a built-in human-machine interface for local operation and monitoring. This configuration is designed for small automation tasks that require AS-i connectivity and an integrated control/HMI solution, reducing the need for separate controllers and multiple chassis while enabling straightforward deployment on compact machines and packaging lines.