By updating local memory registers on the HMI, you can change the PLC IP address, switching the HMI program to communicate with a different PLC over an Ethernet network.
If communication to one PLC is lost, the HMI has the ability to look for, find, and establish communications with another PLC. To do this, the PLCs on the network must all use the same protocol. If no PLC has communication established when the project is originally downloaded, the HMI project will not automatically search…
The Free Protocol driver along with Macro commands can be used to send and receive ASCII data on an HMI. The OUTPORT macro function is used to send an ASCII string out of your HMI’s serial port, and the INPORT macro function allows you to receive an ASCII string to your HMI. Examples of both…
Read More How are ASCII Serial Communications handled in a Maple Systems HMI?
Our “MAC Address” Sample project shows what registers to display to find the MAC address of your Maple Systems HMI. The MAC address can also be found in the system information tab in the System Settings Toolbar (gear icon in the lower right corner) on the screen itself.
The Maple Systems Operator Interface Terminal (OIT) allows a Modicon PLC to call up a message that is stored in the OIT by using a “Message Request Register”. A 4XXXX Holding Register can be used by the PLC to tell the OIT to display one of its messages. For example, register 40500 is the default…
Read More Message Request Register with the Modicon PLC and the OIT Series.
Allen-Bradley MicroLogix series / SLC500 series PLCs have some specific addressing format requirements for select memory locations (Bit-level and Strings, for example). Both drivers (Serial and Ethernet) follow these rules: Bit-level objects must reference the bit position to two digits! Bit 0 is 00, bit 9 is 09. For example, B3 memory, word 5, bit…
Read More I’m having trouble with Allen-Bradley MicroLogix / SLC500 PLC Addressing.
Yes, based on the model, you can download a project using a USB flash drive or SD card. See Tech Note 5087, “Download a Project to an HMI with a USB Flash Drive or SD Card” for more information.
Read More Can I use a USB Flash Drive or SD Card to Download a project to my Maple Systems HMI?
Yes, live video can be viewed directly on our cMT HMI products. Video input options are IP (Ethernet) cameras and USB cameras.
Read More Can I view live video on my Maple Systems HMI using a USB or IP Camera?
Use Ethernet TCP Port 20248 to download a project to a HMI display.
Read More What TCP Port do I use when downloading a project to a Maple Systems HMI via Ethernet?
Yes, to do this the PLCs on the network must all use the same protocol. When setup, the HMI project will automatically search for another PLC when communication is lost from a PLC that had previously established communication. If no PLC has communication established when the project is originally downloaded, the HMI project will not…
Ethernet is a family of computer networking technologies commonly used in local area networks (LAN), and wide area networks (WAN). It was commercially introduced in 1980 and first standardized in 1983 as IEEE 802.3, and has since been refined to support higher bit rates and longer link distances. Over time, Ethernet has largely replaced competing…
Wide area network (WAN) is a telecommunications network or computer network that extends over a large geographical distance/place. Wide area networks are often established with leased telecommunication circuits, connecting multiple smaller networks like local area networks (LANs) and metro area networks (MANs). Unlike a LAN, which is confined to a single building or location, a WAN links computers, devices, and users in different locations, enabling them to communicate and share data seamlessly.