join PLCTalk.net or similar communities and explain your situation. You‘ll likely find someone willing to share the software.
The Series 90-30 CPU typically uses a built into the power supply or CPU faceplate, functioning on RS-485 serial communication .
Use hypervisors like or Oracle VirtualBox . logic master lm90 software download zip 2021
The Logic Master LM90 could be a software tool designed for various purposes, potentially related to logic design, simulation, or digital circuit design, given the "Logic Master" name. Software with similar names often targets educational or professional markets, helping users design, simulate, and sometimes program logic circuits.
The official GE Fanuc support page at the time of LM90‘s active life offered a of the software. While the original download page is gone, you may still find this demo version archived on enthusiast websites. The demo version installs into a separate directory (typically LM90DEMO) and includes a program size limit of 750 bytes for the main program block and each subroutine – sufficient for learning but not for full production programs. join PLCTalk
: This automation community often hosts user-uploaded demos and patches, such as the LM90 9.05 Special designed to help the software run on Windows 2000.
Machine Edition runs natively on Windows 10 and Windows 11, completely eliminating the need for DOS emulators or old serial mapping tricks. Use hypervisors like or Oracle VirtualBox
If you manage to find a legitimate copy of LM90 (perhaps from an old colleague's backup), do not try to run it on Windows 10/11 directly. The best practice is to use software like VirtualBox or VMware to create a Windows 95 or Windows XP virtual machine. Inside this virtual environment, the software runs as intended. You can then pass the USB-to-Serial adapter through to the virtual machine to connect to the PLC.
Despite the lack of official distribution channels, there are several legitimate ways to obtain Logic Master LM90 software, often in zip format:
If you‘re committed to using LM90 for ongoing maintenance, consider these recommendations:
Because LM90 is a strict MS-DOS application, extracting and running it requires structural discipline to ensure file paths do not break. Follow these step-by-step instructions to clear initialization faults. Step 1: Extract to the System Root