Let us assume you want to start a motor (Output Y0) via a start button (Input X0).
Tip: Unlike Siemens where you use "SET/RESET," DOX Mini uses standard coil logic. Always end a rung with a coil or function block.
Protect your intellectual property. DOX Mini allows per-Program Organization Unit (POU) encryption. You can lock specific function blocks so that maintenance electricians can call them but cannot view or edit the internal code.
DOX-Mini is a specialized PC-based software package used for programming and debugging legacy Messung Systems Micro PLCs (such as the Nexgen 4000 series). It serves as a digital alternative to the PG-308 handheld programmer, allowing users to develop logic using ladder diagrams on an IBM-compatible PC. Key Features of DOX-Mini Software dox mini software messung plc
Programming Environment: Provides a Windows or DOS-based interface for creating and documenting ladder diagram logic.
Debugging Tools: Includes a "Powerflow" or monitor mode to view the real-time status of inputs, outputs, registers, timers, and counters.
Force & Step Modes: Allows users to force I/O states to specific values and execute programs one step at a time for troubleshooting. Let us assume you want to start a
Documentation: Features detailed commenting facilities and the ability to generate cross-references and I/O assignment lists for complex programs.
Connectivity: Typically connects to the PLC via RS232 or RS485 interfaces using specific programming cables (often a 9-pin D-type female to 8-pin mini-DIN round connector). Technical Context
Compatibility: Designed for older Messung PLC models like the XMP8 series and Nexgen 4000. Modern Messung PLCs, such as the NX-ERA Xpress or XMPro-10, generally use newer software like XMPS-2000 or environments based on the IEC 61131-3 standard. Tip: Unlike Siemens where you use "SET/RESET," DOX
Hardware Requirements: Originally developed to run on older systems (Min. XT/AT compatible PCs), often requiring Windows XP for later versions like DOX-Mini Plus v2.03.
For technical support or to find legacy documentation, you can visit the Messung Automation website or check resources like the Micro PLC Instruction Manual on Scribd. MESSUNG Nexgen 4000 PLC Programming Software
Even veterans struggle with connectivity. Here is a cheat sheet for common messung plc communication failures.
| Error Message | Likely Cause | Solution | | :--- | :--- | :--- | | "Device not found" | Wrong COM port | Check Windows Device Manager; change COM port in DOX Mini settings. | | "Checksum error" | Electrical noise or bad cable | Use a shorter shielded cable. Reduce baud rate to 9600. | | "Timeout" | PLC is in STOP mode | Switch the PLC physical switch to RUN or TERM. | | "Invalid Password" | Program is protected | Contact your OEM; Messung does not have a backdoor master password. |