FNIRSI LPM-10A for Factory Network Troubleshooting Malaysia
FNIRSI LPM-10A for Factory Network Troubleshooting Malaysia
A factory network problem is not always an IT department problem.
Modern factories may use Ethernet connections for:
IP CCTV
Wi-Fi access points
Office computers
Network printers
Building systems
Network-connected equipment
When one connection fails, maintenance personnel first need to determine whether the problem is related to the physical Ethernet cable, PoE, switch connection, network configuration or connected device.
The FNIRSI LPM-10A Network Cable Tester provides several practical functions for physical network troubleshooting in factory environments.
FNIRSI LPM-10A Feature Summary
| Function | Typical Use |
|---|---|
| Cable Tracing | Identify unknown Ethernet cables |
| Wire Map Testing | Check RJ45 wiring and connection faults |
| Cable Length Measurement | Check approximate installed cable length |
| PoE Detection | Check PoE information during troubleshooting |
| Port Flash | Help identify the corresponding network switch port |
| Network Speed Test | Assist with basic network connection troubleshooting |
| NCV Detection | Supplementary non-contact voltage checking |
| Colour Display | Easier viewing during field maintenance |
For factory maintenance, the main advantage is having several network cable identification and troubleshooting functions in one handheld instrument.
Why Factory Networks Can Be Difficult to Troubleshoot
Factory network infrastructure often grows gradually.
A building may originally have been installed with only:
Office LAN
Later, the company adds:
CCTV
Then:
Wi-Fi
Then:
Additional production areas
Then:
More network-connected equipment
After several years, the cable layout may be very different from the original drawings.
This creates problems when maintenance is required.
Problem 1: Unknown Network Cable
You open a network cabinet and find dozens of Ethernet cables.
Some are labelled.
Some are not.
Some labels are no longer readable.
You need to identify the cable serving a particular location.
The LPM-10A cable tracing function can help technicians narrow down the relevant cable.
This is useful when maintaining installations completed by different contractors over many years.
Problem 2: IP Camera Offline
Factories often have extensive CCTV coverage.
Cameras may be installed at:
Entrances
Loading bays
Production areas
Warehouses
Car parks
Perimeter areas
When one IP camera goes offline, do not immediately replace the camera.
Investigate:
RJ45 connection
Ethernet cable
PoE
Switch port
Network
Camera
The LPM-10A can assist with several of the physical network checks in this process.
Problem 3: Warehouse Wi-Fi AP Offline
Warehouses and production areas may use ceiling-mounted PoE Wi-Fi access points.
One AP stops operating.
First determine whether:
Only one AP is affected
or
Several APs are affected
If only one AP is offline, investigate its individual connection.
If several APs connected to the same switch fail together, investigate the shared infrastructure first.
The fault pattern helps determine where to start.
Problem 4: Network Point Near Production Equipment Stops Working
Suppose a network point beside a production area suddenly fails.
Before replacing equipment, inspect the physical environment.
The Ethernet cable may have been affected by:
Maintenance work
Equipment relocation
Cable-tray work
Renovation
Accidental pulling
Physical damage
Use wire testing and cable tracing to help isolate the connection.
Problem 5: Which Switch Port Belongs to This Device?
Factories may have several network switches distributed across different areas.
You know the device.
You know the Ethernet cable.
But you do not know the switch port.
The LPM-10A port flash function can assist with identifying the corresponding network switch port.
This is particularly useful when working with:
24-port switches
48-port switches
Multiple network cabinets
Poorly documented installations
Problem 6: Cable Label Is Wrong
Never assume an old cable label is definitely correct.
For example, a cable marked:
CCTV-12
may have been reassigned years ago.
A previous technician may have moved the patch cable without changing the label.
For important troubleshooting work:
Label = clue
Test = verification
Use tracing and connection identification to confirm the actual cable path.
Problem 7: PoE Device Has No Power
A factory may use PoE for:
IP cameras
Wi-Fi APs
VoIP phones
Other compatible network devices
If a PoE-powered device is not operating, investigate the PoE connection before assuming the device itself has failed.
The FNIRSI LPM-10A provides PoE detection capability to assist with this type of troubleshooting.
Problem 8: PoE Device Has Power but No Network
This is a different fault.
A device may appear powered but still have no network communication.
Remember:
Power does not automatically prove that data communication is normal.
Continue investigating:
Cable wiring
RJ45 termination
Switch connection
Network configuration
Connected device
Treat power and data as separate parts of the troubleshooting process.
Problem 9: Cable Passes but Connection Is Unstable
A basic wire-map test is important, but it does not explain every network performance problem.
If the cable wiring appears normal but the network remains unstable, continue investigating:
Patch cables
RJ45 terminations
Correct cable identification
Switch port
Network equipment
Network configuration
Connected device
Do not interpret one successful test as proof that the entire network path is perfect.
Problem 10: Unknown Cable Length
Factory cable routes can be difficult to estimate visually.
A device may be only 30 metres away from the network cabinet in a straight line.
But the Ethernet cable may travel:
Up a wall
Across a cable tray
Around machinery
Through another room
Back down to the device
The LPM-10A cable length measurement function can provide additional information about the installed cable.
Use this information together with your knowledge of the cable route.
Example: Warehouse Camera Offline
A warehouse camera suddenly disappears from the CCTV system.
A practical troubleshooting sequence is:
Inspect camera connection
↓
Check PoE
↓
Check cable wiring
↓
Trace camera cable
↓
Identify switch port
↓
Check network
↓
Investigate camera if necessary
This is more systematic than replacing the camera first.
Example: Factory Wi-Fi Problem
Workers report that Wi-Fi coverage in one production area has disappeared.
Check whether the relevant access point is online.
If the AP is offline:
Inspect its Ethernet connection
Check PoE
Test the cable
Identify the switch port
If the AP is online but wireless performance is poor, the problem may require additional Wi-Fi analysis.
The LPM-10A is mainly useful for the wired network side.
Example: Network Failure After Machine Relocation
A machine is moved to a new location.
After the work, a nearby network point no longer functions.
This timing is an important clue.
Investigate whether the cable was:
Pulled
Crushed
Disconnected
Re-routed
Re-terminated
Accidentally damaged
Start with the area affected by the work rather than assuming a random network failure.
One Device Down vs Many Devices Down
This is one of the most useful troubleshooting principles.
One Device Down
Start locally:
Device
Patch cable
Individual Ethernet run
Individual switch port
Several Devices Down
Look for shared infrastructure:
Network switch
PoE switch
Uplink
Power
Network configuration
Entire Area Down
Investigate upstream systems before testing every individual cable.
The number of affected devices provides diagnostic information.
Network Cable Troubleshooting and Electrical Safety
Factory environments can contain electrical equipment and wiring.
The LPM-10A includes NCV detection as a supplementary function, but technicians should still follow appropriate site electrical-safety procedures.
A network cable tester is not a replacement for proper electrical test equipment, isolation procedures or qualified electrical work.
Use the correct instrument for the hazard being investigated.
Can LPM-10A Test Industrial Ethernet Networks?
This requires an important distinction.
The LPM-10A is useful for general Ethernet cable and network troubleshooting applications.
However, industrial environments can use specialised:
Industrial Ethernet protocols
Managed industrial switches
Fibre networks
Special connectors
Control-system architectures
These may require dedicated diagnostic equipment and knowledge.
Do not assume a general network cable tester can diagnose every industrial communication problem.
Can LPM-10A Replace a Network Analyzer?
No.
The LPM-10A helps with practical physical-network troubleshooting.
Advanced problems involving:
Network traffic
Protocol analysis
Managed switch configuration
VLAN
Industrial control communication
may require other tools.
The purpose of the LPM-10A is to help technicians isolate the physical network side efficiently.
Can LPM-10A Replace a Cable Certifier?
No.
For projects requiring formal structured-cabling certification, use appropriate professional certification equipment.
The LPM-10A is better positioned for:
Installation
Maintenance
Cable tracing
Wire checking
PoE troubleshooting
Port identification
General fault finding
This distinction prevents the instrument from being oversold.
A Practical Factory Troubleshooting Workflow
When a network-connected device stops working, use:
Identify affected device
↓
Determine whether one or many devices are affected
↓
Inspect physical connection
↓
Check cable wiring
↓
Check PoE if applicable
↓
Trace the cable
↓
Identify switch port
↓
Check network infrastructure
↓
Investigate device or configuration
This helps maintenance teams avoid unnecessary replacement of equipment.
Why a Multifunction Tester Is Useful for Maintenance Teams
Factory maintenance personnel may encounter different network problems on different days.
Monday:
Offline CCTV camera
Tuesday:
Dead LAN outlet
Wednesday:
Unknown Ethernet cable
Thursday:
Wi-Fi AP without PoE
Friday:
Need to identify a switch port
A multifunction tester can be more practical than carrying a separate basic tool for every small task.
FNIRSI LPM-10A for Factory Maintenance Malaysia
The FNIRSI LPM-10A is particularly relevant for factory maintenance teams that need to troubleshoot the physical side of Ethernet installations.
It can help answer practical questions such as:
Which cable is this?
Is the RJ45 wiring normal?
Approximately how long is the cable?
Is PoE present?
Which switch port is connected?
These questions are often the first step toward isolating a network fault.
FNIRSI LPM-10A Network Cable Tester Malaysia
For factories, warehouses and industrial facilities, the LPM-10A can support troubleshooting of general Ethernet cabling, IP CCTV, PoE Wi-Fi access points and network connections.
For FNIRSI LPM-10A availability, technical enquiries or help selecting a suitable network testing instrument, contact MTM Precision Sdn Bhd.
MTM Precision Sdn Bhd
Showroom & Service Centre:
No. 29-1 & 29-2, Jalan Bandar 18,
Pusat Bandar Puchong,
47160 Puchong, Selangor, Malaysia.
Tel: 03-8080 7172
WhatsApp: +6016-660 7346
Email: mtmpre@yahoo.com
Website: www.mtmpre.com.my
If your factory has an Ethernet, CCTV, PoE or network-cabling problem, WhatsApp us a photo of the network cabinet, switch, RJ45 connection, cable or existing tester and explain what you are trying to troubleshoot.
Supply and enquiries throughout Malaysia, including Selangor, Kuala Lumpur, Johor, Penang, Melaka, Negeri Sembilan, Perak, Pahang, Kelantan, Terengganu, Kedah, Perlis, Sabah and Sarawak.
06 Oct 2026
