R5B EtherCAT IO Module
Product Introduction
The R5B is a high-performance EtherCAT fieldbus distributed IO module launched by INEXBOT. It supports a 100Mbps bus rate and distributed clock functionality, seamlessly connects with INEXBOT controllers and mainstream EtherCAT masters, and delivers high-speed acquisition and output of digital, analog, and encoder signals.
Product Specifications
| Item | Parameter |
|---|---|
| Dimensions | 116 × 210.9mm |
| Bus Rate | 100Mbps |
| Distributed Clock | Supported |
| Power Supply | 24V DC |
| Digital Inputs | 16 inputs, polarity configurable |
| Digital Outputs | 20 outputs (16 transistor + 4 relay) |
| Analog Inputs | 2 channels, 0~10V |
| Analog Outputs | 2 channels, 0~10V |
| Encoder | AB-phase counting (differential signal interface) |
| Operating Temperature | 0~60°C |
| Relative Humidity | 90%, non-condensing |
| Communication Cycle | 200us minimum |
Product Advantages
Function Partitioning
The R5B uses a modular functional design that independently implements digital input, digital output, analog input, analog output, and encoder interfaces, allowing users to flexibly configure them based on actual requirements.
Powerful Functionality
The R5B is equipped with 16 digital inputs, 20 digital outputs (4 of which are relay outputs capable of handling higher loads), 2 analog inputs, 2 analog outputs, and an AB-phase encoder interface — comprehensive functionality to meet a wide range of industrial site needs.
High Stability
The R5B uses an industrial-grade design, supports 24V DC power, an operating temperature range of 0~60°C, and withstands 90% relative humidity (non-condensing), adapting to complex industrial environments. With a 100Mbps bus rate and a minimum communication cycle of 200us, it ensures high-speed, stable data transmission.
Product Appearance

Q&A
Q: What is the difference between the R5B and the R4D/R4C?
A: The R5B has 20 digital outputs (16 transistor + 4 relay), while the R4D/R4C have 16 (4 relay + 12 MOSFET). The R5B measures 116×210.9mm, slightly larger than the R4D/R4C (122×200mm). The R5B is particularly suitable for application scenarios requiring more digital output channels, such as laser welding.
Q: Which EtherCAT functions does the R5B support?
A: The R5B supports a 100Mbps bus rate and distributed clock (DC) functionality, with a minimum communication cycle of 200us. It can connect with INEXBOT controllers and master station devices that support the standard EtherCAT protocol.
Q: Which encoder types does the R5B interface support?
A: The R5B supports AB-phase incremental encoder input using a differential signal interface.
Q: What are the advantages of the R5B's relay output?
A: The R5B provides 4 relay outputs. Compared with transistor and MOSFET outputs, relays can handle higher load current and voltage, making them suitable for driving inductive loads such as contactors and solenoid valves.
Q: What is the operating temperature range of the R5B?
A: The R5B operating temperature range is 0~60°C, with an even wider storage temperature range, making it suitable for industrial site deployment.