The Siemens 6ES7924-2CA20-0AC0 is a connection module for the SIMATIC S7-1500 system, designed to interface digital I/O modules with field wiring. It provides 98 push-in terminals arranged as 32 I/O channels plus 33 L+ and 33 M supply rails, all rated at 24 V and 1 A per terminal with a 2 A total current limit. The module snaps onto 35 mm or 15 mm DIN rail and accepts stranded wire from 0.2 to 2.5 mm².
Deployment context
This module sits between the S7-1500 I/O module and the field devices — think of it as a breakout panel that keeps the I/O module's front connector clean while distributing power and signals to sensors, actuators, or valve islands. The push-in terminals (0.2–2.5 mm² stranded) speed up wiring in panel builds; a 3.5 mm screwdriver blade is all you need for release. The infeed function means one module can feed power to multiple I/O slices, reducing daisy-chain wiring.