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Kinco AK840M Codesys PLC with motion functions
- Programmed in Codesys v3
- Motion control for 32 axes
- expandable
- Ethercat and Modbus TCP
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Anyone looking for a Codesys-based controller for coordinated multi-axis applications — without the budget of a Siemens or Beckhoff solution — will find a powerful and cost-effective alternative in the Kinco AK840M. The PLC supports motion control for up to 32 EtherCAT axes with cycle times from 1 to 4 ms, and can be flexibly expanded with modules from the Kinco RP20 series.
🏭 Typical Applications
Multi-axis positioning: Gantries, linear axes or robot cells with up to 32 synchronised EtherCAT servo axes — programmed directly in Codesys, without additional motion hardware.
Machine control with the Codesys standard: Users already familiar with Codesys 3.5 (e.g. from Beckhoff or ODOT projects) can deploy the AK840M without a new learning curve. The free Codesys IDE runs on any standard PC.
Retrofit of existing systems: The compact DIN rail form factor and broad Modbus support (RTU + TCP, client and server) make replacing older controllers straightforward — even when RS-485 field devices are still in use.
Modular systems with variable I/O: If you need to extend the onboard I/O (8 inputs, 8 outputs) with analogue, digital or temperature modules, simply attach RP20 expansion modules — up to 16 per CPU.
🖥️ Key Technical Specs
Memory: 32 MB program memory, 32 MB data memory and 1 MB non-volatile storage for recipes and process values.
Onboard digital I/O: 8 digital inputs (24 V DC, PNP/NPN) and 8 transistor outputs (PNP, max. 300 mA), plus 2 high-speed counter inputs up to 200 kHz for incremental encoders.
Analogue I/O: Not available onboard — add RP20 analogue modules if required (0–10 V / 4–20 mA, 4 or 8 channels).
Supply voltage: 24 V DC, permissible range 19 – 29 V DC.
🔌 Connectivity and Interfaces
EtherCAT: Natively integrated — synchronises up to 32 axes with a 1 – 4 ms cycle time. Ideal for Kinco FD5 servo drives and RP20 expansion modules via EtherCAT bus coupler.
Ethernet: 2 × RJ45 (10/100 Mbit/s) for programming, monitoring and Modbus TCP.
RS-485: 1 serial port for Modbus RTU client or server (formerly master/slave) — direct connection of frequency inverters, sensors or other field devices.
USB: For programming and data transfer.
CANopen: Optional via plug-in board (Communication Extension Board BD20.CAN).
🌐 Communication Protocols
Modbus TCP and RTU: To connect frequency inverters, energy meters or other Modbus devices, use the built-in client mode (formerly master) via TCP or RS-485. The PLC can simultaneously act as a server (formerly slave) — e.g. for a higher-level SCADA system.
EtherCAT: For axis control and connection of RP20 modules via the EtherCAT bus coupler.
🔗 Expandability: Kinco RP20 System
The AK840M supports up to 16 modules from the Kinco RP20 series. Connect them directly to the PLC (without bus coupler) or use an EtherCAT bus coupler for remote I/O:
Digital I/O modules: 8 or 16 channels, transistor or relay — RP20 Digital Modules.
Analogue I/O modules: 0 – 10 V / 4 – 20 mA, 2+2 or 4 channels — RP20 Analogue Modules.
Temperature modules: PT100 or thermocouple (type J, K, S etc.) — RP20 Temperature Modules.
💡 Codesys 3.5 — Free Development Environment
The AK840M is programmed in Codesys 3.5 — the widely used IEC 61131-3 standard supporting ST, FBD, LD, SFC and IL. The IDE is available free of charge; the device description file for the AK840M is available as a download directly on this page.
🔗 Download Codesys 3.5 free of charge
🏷️ Manufacturer and Reliability
Kinco Automation is an established manufacturer with years of experience developing PLCs, HMIs and drive technology for the global industrial market. The AK840M is CE certified and designed for continuous industrial use (operating temperature −20 °C to +55 °C, IP20, passive cooling). Kinco products are in use at well over 100 spstiger customers across Germany.
🔧 Mounting and Scope of Delivery
Mounting: 35 mm DIN rail, dimensions 57 × 108 × 95 mm, passive cooling (no fan, no wear).
Scope of delivery: AK840M controller, plug-in terminal connectors.
Software and documentation: Device description file for Codesys 3.5 and datasheet available as downloads directly on this page.
Technical Specifications
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