ET 200S high-speed counter slot
The Siemens 6ES7138-4DA00-0AB0 is a 1Count 24V/100kHz counter module for the ET 200S distributed I/O system. It captures encoder or pulse-train signals at up to 100 kHz, converting them into count values the PLC reads over the backplane.
24 V supply, 100 kHz count rate
Rated for 24 V DC supply, the module accepts incremental encoder signals or single-channel pulse trains at frequencies up to 100 kHz. That count ceiling suits high-speed applications like conveyor belt position tracking, spindle speed monitoring, or flowmeter pulse accumulation where a standard 10 kHz digital input would miss edges.