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Odot C3351-B01 – CODESYS 3.5 PLC, expandable up to 32 I/O modules
- CODESYS 3.5, IEC 61131-3
- Modbus TCP & RTU
- 32 expansion modules
- 4 MB program memory (B01)
- Push-in terminals, DIN rail
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Available, delivery time: 3 bis 5 Tage
Preis exkl. MwSt., zzgl. Versandkosten
Available, delivery time: 3 bis 5 Tage
Preis exkl. MwSt., zzgl. Versandkosten
Available, delivery time: 3 bis 5 Tage
Preis exkl. MwSt., zzgl. Versandkosten
Customers also viewed
Customers also viewed
Available, delivery time: 3 bis 5 Tage
Preis exkl. MwSt., zzgl. Versandkosten
Available, delivery time: 3 bis 5 Tage
Preis exkl. MwSt., zzgl. Versandkosten
Available, delivery time: 3 bis 5 Tage
Preis exkl. MwSt., zzgl. Versandkosten
Looking for a compact, standards-compliant PLC for machine and plant automation that relies on open protocols and a vendor-neutral development environment? The Odot C3351-B01 is a practical solution. The CPU has no built-in I/O channels – which makes it deliberately flexible: the expansion modules you connect (digital, analog, temperature, special functions) determine which I/O types are used.
⚠️ Version information: B01 replaces A00
The C3351-B01 is the current successor to the C3351-A00. The key difference is significantly expanded memory: the B01 offers 4 MB program memory, 4 MB data memory, and 32 KB retentive data – compared to 1 MB each and only 1.5 KB retentive memory in the A00.
💡 Important when switching: The device profile of the A00 and B01 differ. In CODESYS and IO-Config, you must load the correct B01 device description file – the A00 file is not compatible. For version identification (side label on the device or IO-Config firmware info) and migration details, please refer to the manual.
🏭 Typical applications
Compact systems with integrated network communication: The C3351-B01 acts simultaneously as a Modbus TCP Client and Server – ideal for systems that connect sensors or external SCADA systems without separate gateway hardware.
Retrofit with serial fieldbus structure: The RS-485 interface supports Modbus RTU as both Master and Slave. Existing serial subsystems – drives, inverters, displays – can be connected directly without additional hardware.
Modular control cabinet design: Up to 32 expansion modules (digital I/O, analog I/O, temperature measurement, encoder inputs, special functions) allow a precisely tailored configuration without unused channels.
IEC 61131-3 projects with portability: If you already have CODESYS experience or want to reuse software modules across different PLC vendors, the C3351-B01 with its five IEC programming languages is ready to go.
💻 Programming with CODESYS 3.5
The C3351-B01 is programmed with CODESYS V3.5.19.70. All five IEC 61131-3 programming languages are supported: Ladder Diagram (LD), Instruction List (IL), Structured Text (ST), Function Block Diagram (FBD/CFC), and Sequential Function Chart (SFC). The CODESYS development environment is available as a free download from the ODOT website.
For configuration, online debugging, module selection, and firmware updates of the I/O modules, ODOT's IO-Config software is available. It communicates directly via the CPU's Ethernet interface and is also available as a free download.
💡 Note: When using CODESYS versions other than V3.5.19.70, some functions may differ from the manual description. See the included manual for details.
🔌 Communication and interfaces
2 × Ethernet RJ45, 10/100 Mbit/s: Port 1 and Port 2 support switch cascading – useful when integrating the PLC into an existing network topology without an additional switch.
Modbus TCP Client/Server: The CPU connects as a client to up to 6 Modbus TCP servers simultaneously and accepts connections from up to 6 Modbus TCP clients at the same time. Distributed SCADA connections and mixed network topologies can be mapped flexibly.
RS-485 – Modbus RTU Master and Slave: Baud rates from 2,400 to 115,200 bps, Modbus RTU and Modbus ASCII. As Master, up to 5 slave devices are supported; as Slave, 1 master device is supported.
🔧 Installation and wiring
Mounts on a 35 mm DIN rail, vertical orientation on a vertical surface. Push-in terminals (tool-free wiring). Wire cross-section: 0.2 to 1.5 mm² (AWG 24 – AWG 16). Supply voltage: 24 V DC (permissible range: 19.2 – 28.8 V DC, with reverse polarity protection).
🏷️ Manufacturer and reliability
Odot Automation (Sichuan ODOT Automation System Co., Ltd.) is a manufacturer specializing in IEC 61131-3 PLCs and distributed I/O systems for industrial automation. The C3351 series is designed for industrial environments up to Pollution Degree 2 and certified for control cabinet installation (IP20).
Passende I/O-Erweiterungen
Technical Specifications
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