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- TA562-RS 1TNE968901R4300
- AC500-eCo RS485 Serial Adapter
- Sweden (SE)
- 45 × 10 × 32 mm
- 0.012 kg
- Xiamen, China
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Product Overview
The ABB TA562-RS, ordering number 1TNE968901R4300, is an RS-485 serial adapter for compatible ABB AC500-eCo V2 programmable logic controllers. It adds a second serial communication interface, identified as COM2, to supported PM55x-xP and PM56x-xP processor modules.
In a machine control cabinet, the TA562-RS is useful when the PLC needs an additional serial connection to communicate with an operator panel, a field instrument, or another controller. For example, a PLC can use its available serial interface for one device while COM2 handles a separate communication task, provided the processor and application configuration support the required arrangement.
The adapter is an interface accessory rather than a standalone communication controller. The processor executes the communication program, while the TA562-RS supplies the additional RS-485 connection. Protocol configuration, device addressing, baud rate, and wiring must be set according to the connected equipment.
The TA562-RS should not be confused with the TA562-RS-RTC, which combines an RS-485 interface with a real-time clock, or the TA569-RS-ISO, which adds galvanic isolation. These accessories serve related purposes but have different hardware functions. Selecting the correct variant is important when replacing an existing option board or expanding a PLC’s serial communication capability.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | ABB |
| Model | TA562-RS |
| Ordering Number | 1TNE968901R4300 |
| Product Type | AC500-eCo RS485 Serial Adapter |
| Product Family | ABB AC500-eCo V2 |
| Communication Interface | RS-485 |
| Serial Port | COM2 |
| Compatible Processor Families | PM55x-xP and PM56x-xP |
| Interface Type | Serial communication option board |
| Dimensions | 45 × 10 × 32 mm |
| Weight | 0.012 kg |
Product Features
- Additional COM2 interface: Adds a second serial communication connection to supported AC500-eCo processors.
- RS-485 communication: Supports serial connections to compatible industrial devices.
- Processor-specific integration: Fits the designated option-board arrangement on supported PM55x-xP and PM56x-xP processors.
- PLC-controlled communication: Works with the processor’s application and configured serial communication functions.
- Suitable for multi-device architectures: Allows the PLC to allocate serial communication tasks across available interfaces when the CPU configuration permits.
- Distinct accessory variants: Can be differentiated from the RTC-equipped TA562-RS-RTC and isolated TA569-RS-ISO.
- Compact option-board format: Adds serial-interface functionality without replacing the PLC processor.
Working Principle
The TA562-RS adds an RS-485 physical communication interface to a compatible AC500-eCo processor. Once installed, the adapter provides the COM2 connection through which the PLC can exchange serial data with compatible external equipment.
A typical communication path is:
AC500-eCo CPU → TA562-RS COM2 Interface → RS-485 Wiring → External Device
RS-485 uses differential signaling to transmit data over a pair of conductors. In industrial installations, this interface is commonly used for serial communication between controllers, operator panels, instruments, and other compatible devices. The actual protocol depends on the connected equipment and the PLC application.
For example, a machine controller may communicate with a compatible operator panel over COM2 while coordinating the rest of the machine through its onboard I/O or other supported interfaces. If Modbus RTU is used, the PLC and the external device must agree on communication parameters such as baud rate, parity, data bits, stop bits, and device addressing.
The TA562-RS does not automatically configure these settings or guarantee communication with every RS-485 device. The PLC program, protocol configuration, cable arrangement, and electrical interface must all be compatible. Wiring topology, signal reference, termination, and biasing should also follow the requirements of the complete communication network.
Role in the AC500-eCo PLC Architecture
The TA562-RS occupies the serial communication expansion position of a compatible AC500-eCo processor. It extends the CPU’s communication options while leaving program execution and application logic under the processor’s control.
| System Element | Function |
|---|---|
| ABB AC500-eCo CPU | Executes the PLC application and manages communication tasks |
| TA562-RS | Adds the COM2 RS-485 serial interface |
| RS-485 Cable | Carries differential communication signals |
| Operator Panel | Exchanges operating commands and machine status with the PLC |
| Serial Field Device | Sends or receives data through the configured protocol |
| PLC Communication Program | Handles the required data exchange |
| Engineering Software | Supports PLC configuration, programming, and diagnostics |
| Network Termination and Biasing Components | Support the electrical requirements of the RS-485 network where needed |
Industrial Applications
| Application | Practical Use |
|---|---|
| Machine Control Panels | Adding a serial interface for an external device |
| Packaging Machinery | Connecting a compatible operator panel or serial instrument |
| Pump and Motor Control | Exchanging operating data with supported serial equipment |
| Building Automation | Connecting compatible controllers and field devices |
| Industrial Instrumentation | Transferring measurements and status information over RS-485 |
| Modbus RTU Networks | Supporting serial communication when configured in the PLC application |
| OEM Automation Systems | Expanding communication options on supported AC500-eCo processors |
| PLC Maintenance and Upgrades | Replacing the existing TA562-RS after verifying CPU compatibility |
Installation and Maintenance
- Verify the complete part number: Confirm TA562-RS and ordering number 1TNE968901R4300 against the existing accessory and processor documentation.
- Identify the processor model: Check whether the installed CPU belongs to the supported PM55x-xP or PM56x-xP family and verify the hardware generation.
- Isolate the controller: Switch off the PLC supply and follow the processor’s instructions before installing or removing the option board.
- Inspect the option-board position: Check the designated slot and connector for contamination, damage, or bent contacts.
- Install the adapter correctly: Align the TA562-RS with the designated connection and seat it according to the processor’s installation instructions.
- Check the external wiring: Verify the RS-485 signal connections, conductor polarity, cable condition, and any required signal reference.
- Review network topology: Confirm that the connected devices follow the intended bus arrangement and that termination and biasing are appropriate for the network.
- Configure the communication protocol: Set the PLC and connected device to compatible communication parameters, including baud rate, parity, data format, and addressing where applicable.
- Verify the PLC application: Confirm that the program uses the intended COM2 interface and that the communication function blocks or configuration settings match the target protocol.
- Test data exchange: Check transmitted and received data, device responses, and communication diagnostics during commissioning.
- Investigate communication faults: If devices do not communicate, inspect wiring polarity, termination, parameter mismatches, addressing, and the selected serial port before replacing hardware.
- Record the final configuration: Document the adapter part number, processor model, protocol, communication parameters, wiring arrangement, and commissioning results.
Compatible System Components
| Component | Function |
|---|---|
| ABB AC500-eCo PM55x-xP Processor | Hosts the TA562-RS in supported configurations |
| ABB AC500-eCo PM56x-xP Processor | Compatible processor family for the serial adapter |
| RS-485 Cable | Carries serial communication signals |
| Operator Panel | Provides an interface for operator commands and status |
| Compatible Serial Instrument | Exchanges process data with the PLC |
| RS-485 Termination Components | Match the electrical requirements of the network |
| PLC Engineering Software | Supports application programming and communication configuration |
| External Device Communication Interface | Provides the corresponding serial connection on the connected equipment |
Recommended Related Models
| Model | Product Type | Selection Consideration |
|---|---|---|
| ABB TA562-RS / 1TNE968901R4300 | AC500-eCo RS485 Serial Adapter | Reference model for adding COM2 to supported processors |
| ABB TA562-RS-RTC / 1TNE968901R5210 | RS-485 Adapter with Real-Time Clock | Combines COM2 functionality with a real-time clock |
| ABB TA569-RS-ISO / 1SAP186400R0001 | Galvanically Isolated RS-485 Adapter | Alternative where galvanic isolation is required and supported |
| ABB TA561-RTC / 1TNE968901R3200 | Real-Time Clock Adapter | Adds a real-time clock function without the combined COM2 function |
| ABB TK503 / 1TNE968901R1100 | COM1 USB Programming Cable | Programming connection for supported COM1 configurations |
| ABB TK504 / 1TNE968901R2100 | COM2 USB Programming Cable | Programming cable for supported COM2 configurations |
| ABB TK506 / 1SAP186100R0001 | RS-485 Isolator | Provides isolation for supported serial-interface arrangements |
| ABB TA566 / 1TNE968901R3107 | Wall-Mounting Accessory | Mounting accessory for compatible AC500-eCo hardware |
| ABB TA570 / 1TNE968901R3203 | AC500-eCo Accessory Set | Contains specified processor accessories and connection components |
| ABB PM554-T | AC500-eCo PLC Processor | Processor model to evaluate for the required serial interface and application |
| ABB PM554-R | AC500-eCo PLC Processor | Alternative processor configuration; verify hardware and accessory compatibility |
| ABB PM564-T | AC500-eCo PLC Processor | Related processor family for comparison of available communication interfaces |
| ABB PM566-TP-ETH | AC500-eCo PLC Processor | Processor option with Ethernet and onboard serial communication features |
Key Advantages
- Adds a dedicated COM2 RS-485 interface to compatible AC500-eCo processors.
- Supports communication with compatible industrial serial devices.
- Allows serial communication tasks to be allocated across available interfaces.
- Provides a clearly identifiable replacement accessory.
- Offers a distinct alternative to adapters with integrated RTC or galvanic isolation.
Technical FAQs
What does the TA562-RS add to an AC500-eCo processor?
It adds a second serial communication interface, COM2, using RS-485. The processor and PLC application manage the communication protocol and data exchange.
Can the TA562-RS be used for Modbus RTU communication?
It can support a compatible serial communication arrangement when the processor, application configuration, and connected device support Modbus RTU. Both ends must use matching communication parameters and addressing.
How does the TA562-RS differ from the TA562-RS-RTC?
The TA562-RS adds the COM2 RS-485 interface. The TA562-RS-RTC combines the serial interface with a real-time clock function. The required functions and processor compatibility should be checked before selecting between them.
What should be checked if the connected device does not respond over RS-485?
Check the A/B signal wiring according to the equipment’s terminal convention, the communication settings, device address, bus topology, and required termination. Also verify that the PLC application is communicating through COM2 rather than another serial interface.