Troubleshooting PLCs – Fixing Issues
One of the most common tasks a PLC programmer is going to perform is troubleshooting issues. This might be troubleshooting issues related to software or related to hardware. No matter how old a machine is, how complex it is, or how sophisticated it is, there are going to be problems that prevent it from carrying out its duties.
PLC-based systems, or, for that matter, any system that has software and hardware components, can be very tricky to troubleshoot, especially when the system is new or there have been modifications to it. There are an infinite number of issues that can cripple or, at the very least, hinder a machine. Unfortunately, there is no one-size-fits-all solution; however, there are common issues that can arise that will present similar behaviors.
This chapter will explore common issues that can arise in a PLC-based system. The chapter will also provide an overview of how to diagnose them and repair them. To do so, this...
