Find a replacement by catalog number
Siemens SIMATIC S7-1200 CPUs & I/O Parts
Find a compact CPU or expansion module using its complete Siemens order number. The parts below cover CPU 1211C, 1212C, 1214C, 1215C and 1215FC, plus signal modules and serial interfaces. Match supply, output type, firmware and project requirements before requesting a replacement.
Before choosing a replacement
Match supply and output type
DC/DC/DC, AC/DC/relay and DC/DC/relay describe different supply and I/O arrangements. Keep the complete CPU order number and confirm input voltage, transistor or relay outputs and connected loads.
Confirm firmware, memory and generation
Related CPU names can have different memory and expansion limits. The documented 1214C AG31 and AG40 order numbers have different work-memory specifications. Current tables can refer to firmware V4.7; confirm the offered version and engineering project. Siemens identifies S7-1200 G2 as a separate generation with different hardware compatibility.
Specify each signal and safety role
SM 1222 and SM 1223 serve digital outputs or combined digital I/O. SM 1231 covers distinct voltage/current, RTD and thermocouple variants; SM 1232 and SM 1234 provide analog outputs or combined I/O. Have the responsible engineer specify the F-CPU and SM 1226 arrangement for safety signals.
Choose board or module connections
CB 1241 is a communication board with RS-485 terminals. CM 1241 variants provide RS-422/485 or RS-232 through different D-sub connectors. Include the form factor, physical interface, protocol and cable pinout in the enquiry.
Manufacturer reference: Siemens S7-1200 generation and migration overview. Model specifications and their manufacturer sources are linked on each product page. Reviewed 2026-09-12.
SIMATIC S7-1200 model list
1 documented model. Select a model for specifications and a quote request.
6ES7214-1AG40-0XB0
Siemens 6ES7214-1AG40-0XB0 S7-1200 CPU 1214C
What to include in your enquiry
Send the complete catalog number, quantity, destination, acceptable condition and required delivery date. Include the required hardware series, firmware and accessories if these matter to your installation. Condition, actual unit photos, test information, price and dispatch timing are confirmed for the quoted unit.
Read the used PLC parts buying guideWhat we verify before a quote
Actual photos when available
Nameplate, condition, and visible wear can be shared before quote when stock photos are not enough.
Test notes for used units
Power-on or function test status is stated when available, with clear condition grading.
Trackable global shipping
DHL, FedEx, UPS, or forwarder options can be quoted with packing photos and tracking details.
Clear DOA boundary
For tested units, quote terms can include 7-day DOA support unless otherwise stated.
Request SIMATIC S7-1200 parts
Send one model or a parts list with your requirements. Pricing and current supply details are confirmed on the quote.