PLCs and control systems
Browse programmable logic controllers, CPUs, distributed I/O, communication modules and control-system accessories across leading industrial automation platforms.
Browse categoryPLC and control-system products
Browse available products by complete model or part number. Confirm compatibility against the installed hardware and engineering project before ordering.
Showing 25–36 of 46
PLCs and control systems
Omron CP2E-N14DT1-D Network CPU Unit
CP2E-N14DT1-D
New Original
$999.00
PLCs and control systems
Omron CP2E-N20DR-A Network CPU Unit
CP2E-N20DR-A
New Original
$999.00
PLCs and control systems
Omron CP2E-N20DR-D Network CPU Unit
CP2E-N20DR-D
New Original
$999.00
PLCs and control systems
Omron CP2E-N20DT-A Network CPU Unit
CP2E-N20DT-A
New Original
$999.00
PLCs and control systems
Omron CP2E-N20DT-D Network CPU Unit
CP2E-N20DT-D
New Original
$999.00
PLCs and control systems
Omron CP2E-N20DT1-D Network CPU Unit
CP2E-N20DT1-D
New Original
$999.00
PLCs and control systems
Siemens SIMATIC S7-1200 CPU 1211C DC/DC/DC 6ES7211-1AE40-0XB0
6ES7211-1AE40-0XB0
New Original
$999.00
PLCs and control systems
Siemens SIMATIC S7-1200 CPU 1212C AC/DC/Relay 6ES7212-1BE40-0XB0
6ES7212-1BE40-0XB0
New Original
$999.00
PLCs and control systems
Siemens SIMATIC S7-1200 CPU 1212C DC/DC/DC 6ES7212-1AE40-0XB0
6ES7212-1AE40-0XB0
New Original
$999.00
PLCs and control systems
Siemens SIMATIC S7-1200 CPU 1214C AC/DC/relay 6ES7214-1BG40-0XB0
6ES7214-1BG40-0XB0
New Original
$999.00
PLCs and control systems
Siemens SIMATIC S7-1200 CPU 1214C DC/DC/DC 6ES7214-1AG40-0XB0
6ES7214-1AG40-0XB0
New Original
$999.00
PLCs and control systems
Siemens SIMATIC S7-1200 CPU 1215C DC/DC/DC 6ES7215-1AG40-0XB0
6ES7215-1AG40-0XB0
New Original
$999.00
Choose the controller role first
Start with the system architecture and required function, then confirm the manufacturer platform and complete order number.
Product family
Allen-Bradley CompactLogix 5380
Allen-Bradley CompactLogix 5380 standard controllers provide scalable Logix control for machine applications, with 0.6 to 10 MB memory options, dual Gigabit EtherNet/IP ports, Compact 5000 I/O support and integrated-motion variants.
Product family
Mitsubishi Electric MELSEC iQ-F FX5U CPU Modules
MELSEC iQ-F FX5U all-in-one CPU modules for compact industrial automation systems.
Product family
Omron CP2E-N Network CPU Units
Omron CP2E-N network-model compact PLC CPU units with built-in I/O and Ethernet connectivity.
Product family
SIMATIC S7-1200 Classic
Siemens SIMATIC S7-1200 Classic is the established compact-controller platform for small automation systems. This collection covers standard Classic CPUs and their matching signal and communication modules, kept separate from the newer S7-1200 G2 platform.
Product family
SIMATIC S7-1500 Standard CPUs
Siemens SIMATIC S7-1500 Standard CPUs are modular advanced controllers spanning entry, mid-range and high-performance PN and PN/DP configurations. This collection excludes compact, fail-safe, technology, redundant, software-controller, ET 200SP CPU and SIPLUS variants.
Related product role
I/O and signal modules
Browse digital input and output modules separately from controller CPUs.
Controller platforms and product families
Move into a manufacturer platform when the installed control architecture or engineering environment is already known.
Allen-Bradley CompactLogix 5380
Allen-Bradley CompactLogix 5380 standard controllers provide scalable Logix control for machine applications, with 0.6 to 10 MB memory options, dual Gigabit EtherNet/IP ports, Compact 5000 I/O support and integrated-motion variants.
View collectionMitsubishi Electric MELSEC iQ-F FX5U CPU Modules
MELSEC iQ-F FX5U all-in-one CPU modules for compact industrial automation systems.
View collectionOmron CP2E-N Network CPU Units
Omron CP2E-N network-model compact PLC CPU units with built-in I/O and Ethernet connectivity.
View collectionSIMATIC S7-1200 Classic
Siemens SIMATIC S7-1200 Classic is the established compact-controller platform for small automation systems. This collection covers standard Classic CPUs and their matching signal and communication modules, kept separate from the newer S7-1200 G2 platform.
View collectionSIMATIC S7-1500 Standard CPUs
Siemens SIMATIC S7-1500 Standard CPUs are modular advanced controllers spanning entry, mid-range and high-performance PN and PN/DP configurations. This collection excludes compact, fail-safe, technology, redundant, software-controller, ET 200SP CPU and SIPLUS variants.
View collectionSIPLUS S7-1200
Siemens SIPLUS S7-1200 products extend the S7-1200 controller platform for demanding environmental conditions, with CPUs, signal modules, communication options and fail-safe I/O available for compact automation systems.
View collectionHow to specify a PLC requirement
A family name is not enough to identify a compatible controller. Capture the electrical, software and lifecycle constraints before selecting a replacement or expansion module.
For an installed system, use the complete manufacturer order number and hardware revision. Similar family names do not guarantee interchangeability.
- 01
Define the control architecture
Establish whether the application needs a compact controller, modular rack, distributed controller or safety architecture.
- Controller topology
- Required redundancy
- Safety functions
- 02
Count and classify the I/O
Record signal types, channel counts, isolation and any high-speed or special-function requirements.
- Digital and analog I/O
- High-speed signals
- Local or remote I/O
- 03
Confirm networks and interfaces
Match the installed fieldbus, industrial Ethernet and device-level communication requirements.
- Industrial Ethernet
- Fieldbus protocol
- Serial or specialty links
- 04
Verify software and firmware
Check the engineering tool, project version, CPU firmware and module support before changing hardware.
- Engineering software
- Firmware version
- Existing project compatibility
- 05
Review installation conditions
Confirm power, cabinet space, temperature, approvals and environmental protection requirements.
- Supply voltage
- Operating environment
- Certifications
Place the PLC inside the complete automation system
Controller selection depends on every layer that exchanges signals, diagnostics or motion commands with the PLC.
Sensors and field devices
Local and distributed I/O
PLC / PAC
HMI and supervisory systems
Drives, motion and actuators
Planning replacements for legacy controllers
When an original PLC, CPU or module is obsolete, preserve the installed system context before comparing a successor or sourcing the same order number.
- 01
Photograph the complete product label and connected modules.
- 02
Record the CPU firmware, memory device and engineering-software version.
- 03
Back up the application before removing powered equipment.
- 04
Check whether the replacement changes wiring, network addressing or I/O behavior.
PLC selection and compatibility guides
guide
SIMATIC S7-1500 compatibility matrix: CPU, I/O, firmware and TIA Portal
A field-ready S7-1500 compatibility method covering exact MLFBs, S7-1500/ET 200MP and ET 200SP hardware, PROFINET roles, firmware, TIA Portal catalogs, HSPs and spare-part release testing.
Read guidecomparison
SIMATIC S7-1500 CPU comparison: 1511 to 1518
Compare current SIMATIC S7-1500 CPU 1511, 1513, 1515, 1516, 1517 and 1518 references by exact order number, work memory, interfaces, execution reference and engineering constraints.
Read guideguide
Wiring ABZ encoders to PLC high-speed counters
A practical method for matching an incremental encoder to a PLC high-speed counter: identify A/B/Z behavior, verify the electrical interface, calculate input frequency, wire single-ended or differential signals, and commission direction and index functions without relying on wire colors alone.
Read guidePLCs and control systems questions
Practical checks for identifying, selecting and replacing controller hardware.
What is the difference between a PLC and a PAC?
The terms overlap. PLC commonly describes an industrial controller used for deterministic machine and process logic, while PAC is often used for higher-capacity, multi-domain controller platforms. The manufacturer family, supported I/O, software and communications matter more than the label alone.
Can a newer PLC CPU directly replace an older one?
Not automatically. Check rack or base compatibility, power requirements, I/O support, communications, firmware, engineering software and the existing application before treating a newer CPU as a replacement.
Why is the complete PLC part number required?
Suffixes and revisions can identify supply voltage, memory, communication ports, environmental variants, safety capability and regional approvals. A shortened model name can therefore identify the wrong hardware.
Can legacy and discontinued PLC components still be sourced?
Availability depends on the exact order number and required condition. Options may include new original stock, new surplus, used, refurbished or repaired equipment, subject to inspection and commercial confirmation.
Need help sourcing plcs and control systems?
Send the manufacturer, complete order number, required condition, quantity and delivery destination for a tailored quotation.
Request a quote