Trouble shooting
Trouble Shooting Cheat Sheet
| Symptoms | Possible Reason | Mitigation Strategy | Targets |
|---|---|---|---|
| Power LED dark or Status LED dark when powered up | Insufficient power supplied | Check requirements The Status LED normally goes dark after a few seconds | All |
| Target not woken up | Activate through power on input (GO) | ZSOM-Mini | |
| RTC Alarm occurred when Target was still running or when no power was supplied. | Remove backup battery | ZSOM-Mini V1.1 (fixed on V1.2) |
|
| Target defect | Contact Schmid Elektronik AG | All | |
| Status LED is flashing | sbRIO9651 is not in standard mode | See Status LED | All |
| Project cannot connect to the Target | IP Address configured in the project does not match the IP address of the target | To discover or change the IP address of your target see the ethernet page. | All |
| Peripheral (USB, DIO, analog in, CAN) does not work | Board region not powered – most regions are disabled by default | Set the GPIOs of the board region (e.g. ENVP, ENHUB, USBRESET for USB; ENVP, ENDIO for DIO), see Power and GPIOs | ZSOM-Mini |
| Target switches off unexpectedly | Go input tied to GND for more than 5 s, or Kill signal set by the FPGA | Check the Go input wiring and the Kill signal | ZSOM-Mini |
| Target not woken up by RTC alarm | No power at alarm time, target still running, less than 30 s between shutdown and alarm, or no backup battery | See precise RTC | ZSOM-Mini |
| SD card not detected | Card inserted after boot | Insert the card before powering the target, see SD card | All |
| Files on SD card corrupted after power loss | FAT32 is not power fail safe | Use ext2/3/4, see SD card | All |
| Deploying an application fails with a version conflict | Software on the target does not match the LabVIEW / CompactRIO installation | Install the matching software with NI MAX, see Installing Software on the ZSOM | All |
| Kernel update fails (opkg) | Wrong date/time on the target, no internet access, or wrong firmware / CompactRIO version | Set date and time, connect via Ethernet (USB is not bridged to the internet), check the requirements, see Kernel update | All |
| Wi-Fi stick not recognised | Modified kernel not installed | Install the kernel, see Wi-Fi and Kernel update | All |
| USB not powered | Set the GPIOs of the board region (ENVP, ENHUB and USBRESET), see Power and GPIOs | ZSOM-Mini | |
| CAN does not work at all | NI Embedded CAN for RIO driver not installed on the target | Install the driver with NI MAX, see CAN | All |
| CAN examples do not work | Firmware of the CANopen microcontroller not flashed | Run CAN_NXP_Firmwareupdate_RT_main.vi first, see CAN | ZSOM-Control |
| CAN bus errors | Too many terminations – the bus termination is fitted on the board | If the ZSOM is not at one end of the bus, contact Schmid Elektronik, see CAN | All |
| RS-485 does not work | Interface is configured as full-duplex RS-422 by default | Connect RX and TX lines (screw terminal or solder bridges), set the termination jumper, see RS422 RS485 | All |
| DIN reads wrong values | Input voltage between 1 V and 2.5 V | Use levels below 1 V (low) and above 2.5 V (high), see DIN | All |
| Display shows nothing / GUI example does not work | LVGL not installed on the target, pictures/fonts missing on the target, or FPGA bitfile not up to date | Run zsom.pc.gui.update.vi and zsom.pc.gui.sync.vi from the GUI example, recompile GUI_FPGA_main.vi if necessary, see Display | ZSOM-Control |
If nothing helps
Contact us on it@schmid-elektronik.ch