Top 3 Troubleshooting Methods in IQAN™ Design

When a machine is not responding as expected, engineers and service teams need fast, reliable ways to trace the problem. In IQAN™ Design by Parker Hannifin, there are several practical troubleshooting methods that help heavy equipment OEMs diagnose machine behavior, isolate faults, and support field service more efficiently.

Why troubleshooting structure matters

For heavy equipment OEMs, troubleshooting is not just about finding a bad signal. It is about moving quickly from symptom to root cause while keeping machine configurations, service access, and software structure manageable. IQAN Design supports that workflow by giving engineers multiple ways to organize and inspect machine logic, including measure groups, live multimeter-style checking, and component navigation.

Measure groups: organized troubleshooting by function

One of the most useful ways to troubleshoot a common or repeat issue in IQAN Design is through measure groups. These let engineers collect related channels into a single view so a technician can monitor a machine function such as lift, tilt, hydraulics, joysticks, or sensors without digging through the full program.

Measure groups are especially valuable when they are built ahead of time for repeat use, which is why they are primarily used for a function group or other anticipated issue. An OEM can create a simple operator-facing group with only a few key signals, or a deeper service group with more detailed channels for advanced fault finding. They can also be configured with visibility rules so the right channels appear based on machine configuration, module selection, or enabled options.

Multimeter mode: live, flexible diagnosis

For issues that are not fully understood, IQAN’s multimeter-style workflow gives engineers a faster, more flexible way to inspect channels live. Unlike a prebuilt measure group, the multimeter approach lets users add and remove signals on the fly while they are actively troubleshooting.

This is especially helpful when a field technician is on the phone with a programmer or service engineer and needs to quickly test several signals at once. It supports a process-of-elimination approach: add the channels, observe behavior, remove what is not needed, and narrow down the fault without changing the underlying machine program.

Component navigator: trace the logic backward

The component navigator is another helpful tool when a machine output is not behaving correctly. Instead of only looking at signals in isolation, it helps engineers trace the control path backward from an output to the inputs and conditions that influence it.

This is especially useful in complex applications where logic is spread across many modules and function groups. If a lift function is not working, for example, the navigator can help reveal whether the issue is related to the joystick, seat switch, E-stop logic, or another upstream condition. For engineers who did not write the original program, that backward tracing can save a significant amount of time.

Choosing the right method

The best troubleshooting method depends on the problem and the stage of diagnosis. Measure groups are strongest when you want a repeatable, preplanned troubleshooting setup. The multimeter is best when you need something live and flexible right now. The component navigator is ideal when you need to understand how one signal is affected by many logic conditions.

Method	Best use	Main advantage
Measure groups	Planned service workflows and recurring diagnostics	Organized, repeatable, machine-specific views
Multimeter	Live troubleshooting in the field	Fast ad hoc signal inspection without changing the program
Component navigator	Tracing logic paths and dependencies	Helps engineers work backward from output to root cause

A smarter service strategy for OEMs

For heavy equipment OEMs, the real advantage of IQAN Design troubleshooting is not just speed. It is the ability to build a machine application that is easier to support in the field, easier to document, and easier to diagnose across multiple configurations. GS Global Resources is the leading integrator of IQAN by Parker Hannifin and our in-house experts have experience programming in a wide range of industries to optimize both machine control and communication for OEMs. Interested in utilizing IQAN in your machines? Contact us today to find out how we can help, or sign up for our next IQAN training session to learn from the experts and get program specific tips and insight.