Module fit and constraints
BMXEHC0200 is a 2-channel high-speed counter module for the Modicon M340 rack. It ticks at a 1 ms cycle time and handles up to 60 kHz per channel, so it's built for incremental encoders, frequency meters, or event counting where you need sub-millisecond update. The 6 inputs split as 3 auxiliary + 3 high-speed, plus 2 outputs that can sink 0.5 A each (1 A total per module). Inputs accept 24 V DC type 3 proximity sensors or push-pull encoders up to 30 V. Power budget: it pulls 200 mA from the 3.3 V bus, 40 mA from the 24 V rack supply, and 80 mA from the 24 V sensor supply — ensure your rack power module can cover that if you're loading multiple M340 I/O slices.
