Two channels, 0.5 A each, PNP source output
The Siemens 6ES7132-4BB01-0AB0 is a 2-channel digital output module for the ET 200S distributed I/O system. Each channel delivers a rated signal current of 0.5 A at 24 VDC, sourced from the backplane bus via the power module. The outputs are PNP source type — they switch positive to the load, which is the standard for most European and North American PLC sinking-input field devices. At 15 mm wide, it fits the narrowest ET 200S slot, so it's a good choice when the terminal strip is tight and you need to pack channels into a limited enclosure depth. The module draws its load voltage from the adjacent power module, not a separate field supply — one less wire to pull per channel.
Wire-break and short-circuit diagnostics per channel
This module monitors each output channel individually for wire-break and short-circuit conditions. The wire-break detection threshold is 48 Ω to 3400 Ω — it catches an open load or a broken wire between the module and the field device. Short-circuit protection is built in, with a response threshold of 1.5 A typical. Both diagnostics can be enabled or disabled in the configuration software. When the CPU or master stops, the module can substitute a configured value (0 or 1) or hold the last output state — this matters for fail-safe applications where a valve or actuator must stay in position during a bus interruption.
Switching speeds and load types
The output switches from 0 to 1 in 100 µs max, and from 1 to 0 in 400 µs max. With a resistive load it can cycle at up to 100 Hz; with an inductive load the max switching frequency drops to 2 Hz, and with a lamp load to 10 Hz. For solenoid or contactor coils, keep the cycle rate under 2 Hz or add a flyback diode across the load. The module supports cable lengths up to 600 m unshielded and 1000 m shielded — more than enough for distributed field devices in a plant area. Reverse polarity protection is present but note: a polarity reversal can connect the outputs through, so check the wiring before powering up.