Troubleshooting the "$115 plc-restart running" error on OP17 screen: A step-by-step guide
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Siemens S5 CPU928B and SIMATIC OP17 HMI by PLC Siemens.
There are a few potential issues to consider when troubleshooting communication problems with S5 and OP PLCs. If you encounter a $115 error code, it typically indicates a communication breakdown. Make sure that both the PLC and OP17 display are running properly and have not lost their programming. Additionally, check for any faults with the PLC communication port or the AS511 programming interface. These issues could be affecting the FB and datablock communication. Keep in mind that it has been some time since I last worked with S5 and OP PLCs, so there may be other factors to consider.
Can you show me how to monitor a running program to ensure it doesn't get lost? Assistance needed.
If the program is not running, a red indicator (STOP) LED flashing or the absence of the green RUN LED can indicate a fault on the PLC, a run switch not in position, or a lost program. In such cases, using Step5 software and a 232 to TTY lead to connect to the PLC is necessary. However, since this PLC is outdated and spare parts or software are hard to find, troubleshooting can be challenging. The HMI may have been programmed using ProTool software, which would also be required for reprogramming. Without the original source file or a backup copy from the PLC, rewriting the program may be necessary, potentially prompting an upgrade. The PLC is likely over 20 years old, and a backup battery failure is a common cause of program loss unless the program is stored in an EPROM or RAM. If you lack the necessary software and experience to go online, seeking assistance from an experienced professional is advised.
Great guide, thanks for sharing! I think it's important to note though that sometimes this issue can be resolved by simply checking the cable connections or even replacing a faulty RS232 cable. It often gets overlooked in the troubleshooting process but it can save a lot of time before diving deeper into the software settings.
This guide is clear and pretty comprehensive, it helped resolve the "$115 plc-restart running" error on my OP17 screen. Something I'd add for future reference, make sure you check the status of all your modules because sometimes modules could be active but not operational due to insufficient power supply. Also, it often helps to ensure that firmware is updated regularly as it can also be a source of this error.
Appreciate the step-by-step guide! I'd like to add, based on my own experience dealing with this error: if "plc-restart running" message persists after following these steps, it might be worth checking the power supply voltage. Fluctuations can sometimes cause this sort of instability, and in my case, a stable power source was all I needed to resolve the issue.
It sounds like a frustrating issue! I’ve found that checking the power supply and ensuring all connections are secure can often resolve the "$115 plc-restart running" error on the OP17 screen. Also, don’t forget to review the error logs for any specific clues, and sometimes a complete restart of the system helps clear up temporary glitches. Good luck, and let us know what works for you!
This error can be pretty frustrating! I found that checking the PLC communication settings was essential for resolving it. Make sure the OP17 and PLC are properly configured to communicate on the same protocol—sometimes it's just a mismatch that causes the issue. Also, don’t forget to power cycle the OP17 after making changes; it can make a big difference in clearing up any glitches. Good luck!
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Answer: 1. What does the "$115 plc-restart running" error on the OP17 screen indicate? - The error message "$115 plc-restart running" typically indicates a problem with the programmable logic controller (PLC) causing it to restart during operation.
Answer: - You can troubleshoot this error by following a step-by-step guide that involves checking the PLC connections, power supply, program logic, and ensuring proper communication between the devices.
Answer: - Common causes of this error may include power supply issues, faulty PLC connections, programming errors, or communication failures between the PLC and OP17 screen.
Answer: - To fix this error, you may need to address the root cause, such as resolving power supply problems, checking and fixing faulty connections, debugging the PLC program, or troubleshooting communication issues between the devices.
Answer: - Yes, following a systematic troubleshooting approach is recommended, which may involve checking hardware connections first, verifying power supply stability, reviewing the PLC program for errors, and ensuring proper communication settings between the devices.
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