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Copy| Product Name | Siemens 6ES7217-1AG40-0XB0 | SIMATIC S7-1200 CPU 1217C DC/DC/DC |
| Item NO. | 2927220 |
| Weight | 0.1 kg = 0.2205 lb = 3.5274 oz |
| Category | SIEMENS |
| Brand | SIEMENS |
| Creation Time | 2026-10-26 |
A high-capacity compact CPU with standard 24 V DC I/O, RS-422/485 differential channels, analog I/O and two PROFINET ports.
Siemens 6ES7217-1AG40-0XB0 is a SIMATIC S7-1200 CPU 1217C DC/DC/DC compact controller. Its onboard terminal groups combine ten standard 24 V DC inputs, four RS-422/485 differential inputs, six standard 24 V DC transistor outputs, four RS-422/485 differential outputs, two 0-10 V analog inputs and two 0-20 mA analog outputs.
Across the communication path, Siemens 6ES7217-1AG40-0XB0 provides two integrated PROFINET ports for controller, engineering and device communication. The differential I/O terminals are separate from the standard DC channels, so the selected signal standard, paired conductors and terminal references must follow the CPU 1217C wiring arrangement rather than a conventional single-ended digital circuit.
For program and panel planning, Siemens 6ES7217-1AG40-0XB0 provides 250 KB of program/data work memory, 4 MB of integrated load memory and a 20.4-28.8 V DC supply range. Current consumption can rise from the CPU-only rated value as signal boards, communication modules and other expansions are added, so the complete installed configuration belongs in the power calculation.
| Technical Item | Value |
|---|---|
| Brand | Siemens |
| Model | 6ES7217-1AG40-0XB0 |
| Product Name | SIMATIC S7-1200 CPU 1217C DC/DC/DC |
| Country | Germany |
| Product Family | SIMATIC S7-1200 |
| Supply Voltage | 20.4-28.8 V DC |
| Standard Digital Inputs | 10 x 24 V DC |
| Differential Inputs | 4 x RS-422/485 |
| Standard Digital Outputs | 6 x 24 V DC transistor, 0.5 A |
| Differential Outputs | 4 x RS-422/485 |
| Analog Inputs | 2 x 0-10 V DC |
| Analog Outputs | 2 x 0-20 mA |
| PROFINET Interface | 2 integrated ports |
| Program/Data Memory | 250 KB |
| Integrated Load Memory | 4 MB |
| Firmware Version | V4.7 |
| Engineering Requirement | STEP 7 V20 or later |
| Rated Current, CPU Only | 600 mA |
| Maximum Current with Expansion | 1,600 mA |
| Typical Power Loss | 12 W |
Assign the device name and IP settings of Siemens 6ES7217-1AG40-0XB0 in the project, connect the two Ethernet ports according to the planned topology and verify each downstream device online. Do not use the second port as an undocumented plant-network bridge merely because the physical connector is available.
Connect each RS-422/485 input of Siemens 6ES7217-1AG40-0XB0 with its designated positive and negative conductors and preserve cable pairing through the terminal route. Keep these references separate from the standard 24 V input common and apply shielding or termination required by the connected source.
Route the RS-422/485 outputs of Siemens 6ES7217-1AG40-0XB0 to the receiving device as matched pairs, observing polarity and the destination interface requirements. Test the differential group separately from the standard transistor outputs so a polarity or reference error is not masked by unrelated I/O.
Insert Siemens 6ES7217-1AG40-0XB0 by full order number and supported firmware, then add the installed signal board and right-side modules in physical order. Compare the project device view with the cabinet before assigning addresses or downloading the program.
Create separate program tags and diagnostic handling for the standard digital, RS-422/485 differential and analog channels of Siemens 6ES7217-1AG40-0XB0. Use names that identify the electrical interface so a differential point cannot be reassigned casually to a standard 24 V circuit.
Calculate the expansion and 24 V demand, compile the complete project and download it to Siemens 6ES7217-1AG40-0XB0. Prove PROFINET communication, standard I/O, differential pairs and analog channels in separate tests, recording polarity, addresses and observed diagnostics for each group.
Check whether the field signal is actually differential and trace both conductors to the dedicated Siemens 6ES7217-1AG40-0XB0 input pair. A single 24 V wire and standard-input common do not reproduce the required RS-422/485 circuit.
For Siemens 6ES7217-1AG40-0XB0, inspect both port link states, connector seating, device name, IP parameters and switch path. Compare the online hardware identity with the exact project CPU before changing program logic.
Measure the 24 V DC supply at Siemens 6ES7217-1AG40-0XB0 during startup and total the CPU, signal-board and module demand. Expansion can raise current toward the documented maximum even when the unloaded supply voltage appears normal.
The onboard Siemens 6ES7217-1AG40-0XB0 analog outputs are specified as 0-20 mA channels. Confirm that the receiving device accepts a current input and wire the complete loop rather than assuming a 0-10 V output.
Keep the Siemens 6ES7217-1AG40-0XB0 firmware level, hardware configuration, network identity, channel assignments, analog scaling and differential wiring record together. Matching only the CPU family name does not restore those settings.
The mixed onboard groups on Siemens 6ES7217-1AG40-0XB0 use different terminal blocks and channel addresses. Compare the physical X10-X13 terminal position with the configured tag address before recalibrating the field device.
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