What this module does — and what it doesn't
The Siemens 6EP1334-3BA00 is a digital input module that also handles MSI (Motion/Safety Integration) signals — so it's not just a standard DI block. That means it catches a broken sensor wire before the line faults out. Rated input thresholds: Signal '0' from -30 to +5 V, Signal '1' from +11 to +30 V, with a typical current draw of 2.5 mA at '1'. The module supports 2-wire sensors and has a diagnostic alarm for hardware interrupts. Firmware is V2.1.0 and field-updatable.
Isolation tested at 707 V DC (type test). Power loss is 4.2 W typical — factor that into your panel thermal budget.