SIGMATEK CCP 521 C-DIAS processor module

Common troubleshooting and solutions

1. The module cannot start, and the digital display stops at 88. Check if the boot media is inserted, if the operating system is complete, and if the BIOS self-test has passed. If the boot media is damaged, replace the microSD card and re burn the program. Check if the power supply is within the range of 18 to 30 V DC and if the starting current is sufficient.

2. Display POINT ER or CHKSUM. Usually related to program memory modules. Reprogram the memory module, and replace the module if errors occur repeatedly. Check if the user program covers software errors and if the program is executable.

3. Display Watchdog or INT ERROR. Check if the user program has been blocking interrupts for a long time, if STI instructions have been forgotten, if hardware interrupt programming is incorrect, and if INB/OUTB/INW/OUTW instructions are used correctly. If the processor is defective, replace the CPU.

4. Display VARAN MANAGER ERROR or VARAN ERROR. Read log files and analyze error trees. Check if the actual network matches the project, if the VARAN wiring is damaged, and if the distributed module power supply is missing. Check the terminal resistance and shield grounding.

5. CAN communication failed. Check if the checkpoint numbers conflict, if the baud rates are consistent, and if the terminal resistors match. Check the polarity of CAN H/L and whether the shielding layer is grounded. If the bus is too long, reduce the baud rate. Check if the 120 Ω twisted pair cable is qualified.

6. Ethernet communication is abnormal. Check the IP address and subnet mask. If there are third-party devices in the network, configure packet filters to avoid real-time runtime errors caused by broadcast storms. Check the RJ45 connector and cable shielding.

7. The power supply is normal but the DCOK does not light up. Check the+24 V power supply, inspect the X6 wiring of the power plug, and check the fuse. If the USV malfunctions, the ERROR red light will light up, check the USV module and battery.

8. The program cannot be saved or loaded. Check if the microSD card is formatted as EDGE media and if LASAL Class 2 is used for formatting. Check if the file system is damaged and read Event00.rog. Avoid writing SRAM during interrupts and prevent file size changes.

9. Module overheating. Check if the installation direction is vertical and if a fan is used for inclined installation. Check the ventilation of the control cabinet, whether the ambient temperature is within the range of 0 to+60 ° C, the storage temperature is -10 to+85 ° C, and the humidity is 10 to 90% without condensation.

10. Poor grounding leads to random errors. Check the low ohm grounding connection to ensure maximum cross-sectional area and maximum electrical surface. Check if the shielding layer is connected extensively at the entrance. Check if ESD protection measures are in place.

Maintenance and lifespan recommendations

The maintenance of CCP 521 should focus on the lifespan of microSD cards, grounding shielding, connector fastening, and heat dissipation. There are two modes for SRAM writing: cyclic writing (default when data changes) and only writing during PowerFail (through hardware buffer backup time, starting from version 01.02.195). The advantage of circular writing is that in the event of a severe system crash, the SRAM data image can be referenced, and under standard settings, it can be changed up to 1 minute later than the last change. However, extensive use can significantly affect the lifespan of microSD cards. In the LASAL CLASS project, rarely changed value settings such as persistent servers, RamEx, and StringRam objects can be converted to file storage. If converting existing objects from SRAM to File, loader version 02.02.140 or higher, as well as Tools library version 01.02.033 or higher RamEx and StringRam classes, need to be used.

In terms of environmental conditions, the working temperature is 0 to+60 ° C, the storage temperature is -10 to+85 ° C, and the humidity is 10 to 90% without condensation. EMV stability complies with EN 61000-6-2 (industrial zone), impact resistance EN 60068-2-27 150 m/s ², protection type EN 60529 IP20, UL protection type open type device, pollution level 2. Standard UL508 (E247993). Hardware version 2. x, order number 12-104-521.