| LED State | Manual’s Explanation | What It Actually Means | | :--- | :--- | :--- | | flashing slow (1Hz) | PLC in STOP mode | Normal. You need to flip the run/stop switch or send a start command via software. | | RUN flashing fast (5Hz) | Watchdog timer overflow | Your program has an infinite loop (e.g., a JMP instruction that never resolves). Hard reboot required. | | ERR solid red | Hardware failure | Usually the 24V power rail inside the PLC has shorted. 90% chance the processor is dead. | | I/O flashing | Missing I/O bus or terminal block | The removable terminal block is not fully seated, or an expansion module failed. | | TER lit | Terminal active | Someone (or something) is connected to the programming port. Disconnect to restore remote control. |
Includes a 10 kHz fast counter, 4.9 kHz pulse outputs, and latching inputs capable of detecting 50 µs pulses. modicon tsx nano manual
Warning: Beware of paid "manual resellers" charging $50 for a PDF. The manual is abandonware; you should never pay for it. | LED State | Manual’s Explanation | What
If you actually have a device labeled , could you share a photo or model number? It might be a regional variant, educational trainer, or mislabeled product. Otherwise, I recommend downloading the Modicon TSX Micro Hardware Guide (reference: 35010375 01) from Schneider Electric’s website or archive.org. Hard reboot required
Covers DIN rail mounting, environmental tolerances, and wiring diagrams for the 100-240V AC vs. 24V DC models.
| LED State | Manual’s Explanation | What It Actually Means | | :--- | :--- | :--- | | flashing slow (1Hz) | PLC in STOP mode | Normal. You need to flip the run/stop switch or send a start command via software. | | RUN flashing fast (5Hz) | Watchdog timer overflow | Your program has an infinite loop (e.g., a JMP instruction that never resolves). Hard reboot required. | | ERR solid red | Hardware failure | Usually the 24V power rail inside the PLC has shorted. 90% chance the processor is dead. | | I/O flashing | Missing I/O bus or terminal block | The removable terminal block is not fully seated, or an expansion module failed. | | TER lit | Terminal active | Someone (or something) is connected to the programming port. Disconnect to restore remote control. |
Includes a 10 kHz fast counter, 4.9 kHz pulse outputs, and latching inputs capable of detecting 50 µs pulses.
Warning: Beware of paid "manual resellers" charging $50 for a PDF. The manual is abandonware; you should never pay for it.
If you actually have a device labeled , could you share a photo or model number? It might be a regional variant, educational trainer, or mislabeled product. Otherwise, I recommend downloading the Modicon TSX Micro Hardware Guide (reference: 35010375 01) from Schneider Electric’s website or archive.org.
Covers DIN rail mounting, environmental tolerances, and wiring diagrams for the 100-240V AC vs. 24V DC models.