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What is Electromagnetic Interference?

Electromagnetic Interference (EMI) refers to unwanted electromagnetic energy that disrupts the normal operation of electronic devices. It can be caused by various sources, such as electrical circuits, radio frequency signals, and electrical appliances. EMI can interfere with communication signals, leading to data loss, signal degradation, or malfunctioning devices. To minimize the impact of EMI, devices…

What is Bridge Mode?

Bridge Mode allows a device to function as a network switch, forwarding traffic between LAN ports without modifying packet data. This creates a seamless connection between devices, enabling communication as if they were on the same network. All LAN ports operate as a single network segment, relaying traffic without performing NAT. This mode is useful…

Can I have my LAN ports configured to different networks?

Yes! You can have each LAN port on a cMT or HMI configured for a different network or subnet, in fact, we recommend doing so to keep the ports from conflicting. One thing to keep in mind is that the LAN 1 port is configured for accessing the internet, where LAN 2 is only able…

What’s the difference between the two LAN ports on my HMI/cMT?

The specifics will likely differ based on which device you’re specifically working with, but in general, LAN 1 is the port you’d use for a network connection that goes out to the internet, where LAN 2 is strictly for Local Access Networks. In general, we recommend keeping to LAN 2 on your device, unless you…

What is a Virtual Local Area Network (VLAN)?

A virtual local area network (VLAN) segments a physical network into smaller, isolated networks. It can help improve security and performance on a network. Layer 2 switches may create and segment VLANs but cannot route traffic between them, unless it has VLAN routing, or router-on-a-stick capabilities. Layer 3 switches or routers perform routing between VLANs,…

Log4j Vulnerability

“Maple Systems HMIs are not affected by CVE-2021-44228, also known as Log4shell, and related vulnerabilities including CVE-2021-45046 and CVE-2021-45105. Users of Maple Systems HMIs do not have to take any further action.” Background Disclosed on December 9, 2021, CVE-2021-44228 is an Apache Log4j vulnerability which may allow remote code execution (RCE) on the target system…

How to find the IP address of an HMC on a network

HMC To view the programmed Ethernet parameters of your HMC2, HMC3 or HMC7 on the network, press and hold the lower right corner of the screen while powering on. On a HMC4 series screen, press/click and hold the top left corner of the screen for 5 seconds while the device is powered on.

How do I address multiple devices using the Modbus TCP/IP Gateway function?

To address multiple devices, using the Modbus TCP/IP Gateway function: 1. Select the table for the mapped device. 2. Click the “Settings…” button at the bottom of the Address Mapping Table window. 3. Specify the mapped device address in the Table Settings window. style=”width: 878px;” data-filename=”gateway.png”> Follow Technical Note 5099 “Using the Modbus Gateway” for…

Data Log Export via EasyWeb

When connecting to your cMT–X Series through EasyWeb, you are able to export data logs, event logs, and operation logs as well as make backups of the database directly to your PC.    To connect via EasyWeb, enter the IP address of the cMT-X Series in your browser’s URL (the default System password is: 111111). Click on the “Data” tab in the menu on the left side of EasyWeb and then…

Define User Datagram Protocol (UDP)

UDP (User Datagram Protocol) is a communications protocol that is primarily used for establishing low-latency and loss-tolerating connections between applications on the internet. It speeds up transmissions by enabling the transfer of data before an agreement is provided by the receiving party. As a result, UDP is beneficial in time-sensitive communications, UDP is an alternative…