---
title: "ViewMarq MD4-0112T"
url: "https://maker.wiznet.io/mason/resellers/viewmarq-md4-0112t/"
markdown_url: "https://maker.wiznet.io/mason/resellers/viewmarq-md4-0112t/md"
type: "VAR: Value-Added Reseller Products"
author: "ViewMarq"
author_url: "https://www.automationdirect.com/adc/shopping/catalog/hmi_%28human_machine_interface%29/viewmarq_led_message_displays/viewmarq_led_message_displays/md4-0112t"
editor: "WIZnet"
editor_url: "https://maker.wiznet.io/"
original_author: "ViewMarq"
original_url: "https://www.automationdirect.com/adc/shopping/catalog/hmi_%28human_machine_interface%29/viewmarq_led_message_displays/viewmarq_led_message_displays/md4-0112t"
published: "2022-10-26"
language: "en"
tags: ["Arduino", "C/C++"]
likes: 4
views: 8001
comments: 0
source: "WIZnet Makers (https://maker.wiznet.io/)"
---

# ViewMarq MD4-0112T

> ViewMarq LED message displays use the latest LED and communications technologies to display both critical and non-critical information to ap

Original author: ViewMarq (source: https://www.automationdirect.com/adc/shopping/catalog/hmi_%28human_machine_interface%29/viewmarq_led_message_displays/viewmarq_led_message_displays/md4-0112t)

## Components

- Software: **Arduino IDE** ([docs](https://www.arduino.cc/en/software))

## Documents and links

- [code](https://support.automationdirect.com/firmware/historydetail.php?pid=61) (code)

## Article

ViewMarq MD4 series industrial LED message display, 1 line x 12 characters, 1.5in and 2in, (2) serial and (1) Ethernet port for configuration and external message control, NEMA 4/12, indoor use only.

| **Technical Attributes** |  |
| --- | --- |
| **Brand** | ViewMarq |
| **Item** | Industrial LED message display |
| **Series** | MD4 |
| **Display Size** | 1 line x 12 characters |
| **Display Type** | Tri-color LED |
| **Character Size** | 1.5in and 2in |
| **Character Color** | Red, amber and green |
| **Character Type** | Embedded string and numeric variables |
| **Scrolling** | Right, left, up and down |
| **Recommended Maximum Viewable Distance** | 100ft |
| **Communication Port and Connection Type(s)** | - (1) Ethernet 10/100Base-T (RJ45) - (1) RS-232 (RJ12) - (1) RS-485 (3-pin terminal) |
| **Port Protocol(s)** | - Modbus TCP Server - Modbus RTU Slave - ASCII |
| **Port Speed(s)** | - up to 38.4k baud - 10/100 Mbps |
| **Housing Material** | Extruded aluminum |
| **Housing Rating** | NEMA 4/12 |
| **Environmental Requirements** | Indoor use only |
| **Includes** | Mounting hardware, cable glands and (1) Ethernet patch cable |
| **Programming Software** | MD-PGMSW configuration software v2.0 or later |

---

Source: https://maker.wiznet.io/mason/resellers/viewmarq-md4-0112t/