---
lang: "en"
title: "I-7514U-G CR: RS-485 HUB"
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end_of_life: "false"
---

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I-7514U-G CR: Isolated 4-channel RS-485 active hub

 

The I-7514U is a 4-channel RS-485 active star wiring hub. It has 4 independent RS-485 output channels and one RS-485 input channel. Each output channel features an individual driver. Data from a master to the input channel will be simultaneously forwarded to all four output channels.

### Baud Rate Setting

The I-7514U provides 2 baud rate setting modes: one is auto-tuning mode, and the other is fixed baud rate mode. The Self-Tuner mode can support multiple baud rates and multiple data formats. The design of the Self-Tuner is exactly the same as the I-7513 and I-7510 series.

The fixed baud rate mode provides better quality for data transmission over long or lossy lines or electrically noisy environments.

### RS-485 Short Circuit

Short-circuit protection can automatically disable the faulty channel. This type of design is sufficient to protect the communication system. When a connected RS-485 device fails, the faulty channel will be isolated to ensure that other devices operate normally.

### Termination Resistors

In some critical environments, termination resistors may need to be added to prevent serial signal reflection.
The I-7514U includes a 120 Ω termination resistor for each channel, selectable via jumper (default disabled).

### LED Indicators

The I-7514U has 6 LEDs to indicate power status and network traffic.
The TxD / RxD LED flashes when the unit sends or receives data.

 

 

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Source: https://shop.marcomweb.it/en/modbus/i-7514u-g-cr-rs-485-hub

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