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Siemens 6AG1550-1AA00-7AB0 — PLCs (Programmable Logic Controllers)

6AG1550-1AA00-7AB0 S7-1500 DI/DO, 24V 70°C

MPN6AG1550-1AA00-7AB0

Siemens S7-1500 DI/DO module, 6AG1550-1AA00-7AB0, 16 bytes input, 12 bytes output, 24 V DC, -40..70 °C.

Siemens 6AG1550-1AA00-7AB0 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

6AG1550-1AA00-7AB0 — I/O
ParameterValue
Digital inputs6; 3 per channel
Digital outputs4; 2 per channel
Input data area16 byte; Per channel
Output data area12 byte; per channel; 4 bytes for Motion Control
6AG1550-1AA00-7AB0 — Electrical
ParameterValue
Rated value (DC)24 V
Permissible range, lower limit (DC)19.2 V
Permissible range, upper limit (DC)28.8 V
Power loss (typ.)4 W
Short-circuit protectionYes
6AG1550-1AA00-7AB0 — Environmental
ParameterValue
Installation altitude, max.5 000 m
Temperature, min.-40 °C
Temperature, max.70 °C
Operating temperature, min. (horizontal mounting)-40 °C; = Tmin (incl. condensation/frost); start-up @ -25 °C
Operating temperature, max. (horizontal mounting)70 °C; = Tmax; note derating for inductive loads; > +60 °C total current of the encoder supply max. 0.5 A, total current of the outputs max. 1 A
Ambient temperature vs. altitude/pressure deratingTmin ... Tmax at 1 140 hPa ... 795 hPa (-1 000 m ... +2 000 m) // Tmin ... (Tmax - 10 K) at 795 hPa ... 658 hPa (+2 000 m ... +3 500 m) // Tmin ... (Tmax -20 K) at 658 hPa ... 540 hPa (+3 500 m ... +5 000 m)
6AG1550-1AA00-7AB0 — Mechanical
ParameterValue
Width35 mm
Height147 mm
Depth129 mm
Weight (approx.)250 g

Product details

I/O map and diagnostics

16 bytes of input, 12 bytes of output (4 of those reserved for motion control). Supports 2-wire sensors, pulse encoders, and can be parameterized as source/sink input. Capture and counter functions are built in. The module can handle wire-break detection (lower limit 48 Ω, upper 12 kΩ) and short-circuit protection on outputs. Diagnostic alarm and isochronous mode are present for time-critical loops. RUN/ERROR/MAINT LEDs give on-module status; I&M data is supported for asset tracking. Software gate and gate start/stop allow controlled counting.

Frequently asked questions

What does '24 V Yes; L+ (-0.8 V)' mean for wiring?

The module requires a 24 V DC supply, but the L+ input can drop as much as 0.8 V below the nominal 24 V and still operate correctly. This accounts for voltage drop in the supply wiring or fuse.

What is the maximum operating temperature?

70 °C. The minimum ambient temperature is -40 °C.

What I/O capacity does this module provide?

16 bytes of input and 12 bytes of output (4 of the output bytes are allocated for motion control). Per-channel details: inputs are 24 V rated, outputs share a common 24 V encoder supply.

MPN
6AG1550-1AA00-7AB0