SIMATIC S7-1500, TM Count 2x 24 V Counter Module, 2 Channels For 24 V Incremental Encoder Or Pulse Encoder, 3 DI, 2 DQ Per Channel

Siemens 6ES7550-1AA01-0AB0 is a SIMATIC S7-1500 Technology Module “TM Count 2x24V” counter module with 2 channels for 24 V incremental encoder or pulse encoder signals. It provides 3 digital inputs and 2 transistor digital outputs per channel (total 6 DI / 4 DQ), supports counting frequency up to 800 kHz (with quadruple evaluation), and supplies a common 24 V encoder supply for both channels (short-circuit protected).