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Siemens 6AG1211-1AE31-2XB0 — PLCs (Programmable Logic Controllers)

Siemens 6AG1211-1AE31-2XB0 SIPLUS CPU, -40°C to 70°C

MPN6AG1211-1AE31-2XB0

Siemens SIPLUS S7-1200 CPU 6AG1211-1AE31-2XB0, ruggedized for -40 to 70 °C, with PROFIBUS, MODBUS, and TCP/IP.

$323.85Ref. price · indicative, final on quote
Siemens 6AG1211-1AE31-2XB0 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

6AG1211-1AE31-2XB0 — I/O
ParameterValue
Digital inputs6; Integrated
Digital outputs4
ExpandableNo
Input data area1 024 byte
Output data area1 024 byte
6AG1211-1AE31-2XB0 — Processor & Memory
ParameterValue
Execution time, bit operations (typ.)0.085 µs; / instruction
Execution time, word operations (typ.)1.7 µs; / instruction
Execution time, floating-point arithmetic (typ.)2.5 µs; / instruction
Size, max.4 kbyte; Size of bit memory address area
6AG1211-1AE31-2XB0 — Programming
ParameterValue
Programming language: FBDYes
Programming language: LADYes
Programming language: SCLYes
6AG1211-1AE31-2XB0 — Electrical
ParameterValue
Rated value (DC)24 V
Current consumption (rated)300 mA; Typical
Permissible range, lower limit (DC)20.4 V
Permissible range, upper limit (DC)28.8 V
Power loss (typ.)8 W
Short-circuit protectionNo; to be provided externally
6AG1211-1AE31-2XB0 — Environmental
ParameterValue
Installation altitude, max.5 000 m
Temperature, min.-40 °C
Temperature, max.70 °C
Operating temperature, min. (horizontal mounting)-40 °C; = Tmin; Startup @ -25 °C
Operating temperature, max. (horizontal mounting)70 °C; = Tmax; > +60 °C Number of simultaneously controllable inputs and outputs max. 50 %; no signal board can be used
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)
6AG1211-1AE31-2XB0 — Mechanical
ParameterValue
Width90 mm
Height100 mm
Depth75 mm
Weight (approx.)370 g
6AG1211-1AE31-2XB0 — Communication
ParameterValue
Interface typePROFINET

Product details

Integrator brief

SIPLUS S7-1200 CPU 6AG1211-1AE31-2XB0 is the extended-temperature variant of the Siemens S7-1200 line, rated for -40 °C to 70 °C ambient operation. It carries cULus, FM, and CE approvals, making it a fit for machinery shipped to North America or the EU. Power supply tolerance is 20.4 to 28.8 V DC; stay within that window to avoid dropout.

Communications and I/O

Onboard fieldbus includes PROFIBUS DP, Modbus TCP, UDP, and AS-Interface. It can act as both Modbus client and server, with TCP/IP and autocrossing enabled by default. Input and output process-image sizes are 1 024 byte each.

Programming and memory

Programmed in LAD, FBD, or SCL. Integrated memory is 1 Mbyte; program size is limited only by available RAM for code (no expansion slot). Backup time is 480 hours typical, enough to retain user program and data over a long weekend power loss. The CPU is not expandable via memory cards, but the fixed capacity covers mid-size projects.

Frequently asked questions

What approvals does 6AG1211-1AE31-2XB0 carry?

cULus, FM, and CE approvals are listed. UL approval is also noted.

What is the operating temperature range?

-40 °C to 70 °C ambient, which is the extended-temperature SIPLUS rating.

Does this CPU support Modbus TCP?

Yes, Modbus TCP is listed, along with UDP. It can operate as both client and server.

What programming languages can be used?

LAD (ladder), FBD (function block diagram), and SCL (structured text) are supported.

How much memory does it have?

1 Mbyte integrated memory. The program size is limited only by available RAM for code, and backup time is 480 hours typical.

MPN
6AG1211-1AE31-2XB0