MINEGEM Machine Control ; Guidance Products Local Area Radio Network Caterpillar

Communication to Operating Machine - Test

Usage:

- MXX

System Operation Description:

In order to follow this procedure:

Confirm the fault condition exists
Identify the conditions that may generate the fault
Eliminate faults in order of the general cause

Note: In general, faults are caused by problems in the following order: physical damage, environmental damage, harness failure, component failure and Electronic Control Module (ECM) failure.

Perform the following:

Set up the Automation Operator Station and locate and sponsor a machine.

ReferenceFor more information on setting up the Automation Operator Station, refer to Operation and Maintenance Manual, "Setting Up for Operation".

ReferenceFor more information on locating and sponsoring a machine, refer to Operation and Maintenance Manual, "Preparing for Operation".

This diagnostic system procedure determines the cause of an unexpected loss of communications to a machine which is operating. The fault could be caused by:

Fault in the Local Area radio Network (LARN) including radios, repeaters, wiring, or antennae
An area where there is inadequate LARN signal strength
Fault in the machine Onboard Radio or associated wiring and antennas
Fault in the machine Automation ECM or associated wiring
Fault in the machine Automation Operator Station network, power supply, or network connection to the LARN
Software fault in the Automation ECM

Test Step 1. Open the Site Server Computer Web Page.

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Illustration 1	g02067733
Home screen. Typical example.

From the operator console open a web browser and go to the site server computer web page at http://10.10.0.1/.

Expected Result:

Site server computer web page is open and displaying the home screen.

Results:

YES - Site server computer web page is open and displays the home screen. Proceed to Test Step 2.
NO - Site server computer web page fails to open displaying an error. The error indicates that there is probably a fault with the operator console, site server, network, or power supply.
Repair: Check that Site server computer web page fails to open displaying an error. Refer to Troubleshooting, Testing, and Adjusting, "Site Server - Test" in this manual.
STOP

Test Step 2. Check Machine Diagnostics Web Page.

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Illustration 2	g01840233
(1) "Diagnostics" tab (2) "Network" table (3) "Machines"

Select "Diagnostics" tab (1) from the site server computer web page.
Note: Enter the username and password if required.

Select "Machines" (3) from "Network" table (2) .

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Illustration 3	g01840253
"Machine Diagnostics" (4) "Machine" table (5) Machine

Select required machine (5) from "Machine" table (4) .

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Illustration 4	g01840313
Typical example (6) "Onboard Radio" (7) "OK" (8) "Automation ECM" (9) "Reboot"

Check the status of machine components, specifically "Onboard Radio" (6) and "Automation ECM" (8) .

Expected Result:

The status of all machine components is "OK" (7) .

Results:

YES - The status of all machine components is "OK". Proceed to Test Step 3.
NO - The status of the "Onboard Radio" and "Automation ECM" "FAIL (NOT RESPONDING)". Proceed to Test Step 5.
NO - "Onboard Radio" is "FAIL (NOT RESPONDING)" but other components report "OK". The error may be caused by incorrect configuration for the machine.
Repair: Check "Onboard Radio" is "FAIL (NOT RESPONDING)" but other components report "OK". Refer to Troubleshooting, Testing, and Adjusting, "Communication to a New Machine - Test" in this manual.
STOP
NO - "Onboard Radio" is "OK" and "Automation ECM" is "FAIL (NOT RESPONDING)". Proceed to Test Step 6.

Test Step 3. Check Onboard Radio Performance Statistics.

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Illustration 5	g01842053
Typical example (10) "Signal Strength in" (11) Average signal strength (12) Minimum signal strength (13) Maximum signal strength (14) "Response Time" (15) "Lost Packets" (16) "Retries" (17) Average response time

From the "Machine Diagnostics" web page, check the values for "Signal Strength in" (10), "Response Time" (14), "Lost Packets" (15) and "Retries" (16) .

Expected Result:

The values are in the normal range if:

"Minimum signal strength" (12) is greater than 30% and there is not more than 30% difference between "Minimum signal strength" (12) and "Maximum signal strength" (13)
Average response time (17) is less than 5 ms
Less than a total of five "Lost Packets" (15) or "Retries" (16)

Results:

YES - All values are in range and radio communication to the machine is established. If a first time fault has occurred, proceed to Test Step 4.
YES - All values are in range and radio communication to the machine is established. Take note of the location where the failure occurred. If the failure recurs in the same location, then a fault is indicated, possibly intermittent, in the LARN in that area.
Repair: Check for communication. Refer to Troubleshooting, Testing, and Adjusting, "Local Area Radio Network - Test" in this manual.
STOP
NO - Minimum signal strength less than 30%.
Repair: Check for signal strength. Refer to Troubleshooting, Testing, and Adjusting, "Signal Strength at Machine - Test" in this manual.
STOP
NO - Maximum signal strength is more than 30% greater than the minimum signal strength.
Repair: Check for signal strength. Refer to Troubleshooting, Testing, and Adjusting, "Signal Strength at Machine - Test" in this manual.
STOP
NO - Average response time more than 5 ms.
Repair: Check for average response time more than 5 ms. Refer to Troubleshooting, Testing, and Adjusting, "Signal Strength at Machine - Test" in this manual.
STOP
NO - Total of "Lost Packets" or "Retries" greater than "5".
Repair: Check for Total of "Lost Packets" or "Retries" greater than "5". Refer to Troubleshooting, Testing, and Adjusting, "Signal Strength at Machine - Test" in this manual.
STOP

Test Step 4. Restart the Automation Electronic Control Module.

For a first time loss of communication with the LARN, restart the Automation ECM with the "Reboot" (9) link on the "Machine Diagnostics" web page. Wait 2 minutes for the reboot to complete and then refresh the diagnostics web page to check the signal strength values.

Expected Result:

The machine has established communication and values are in the normal range if:

"Minimum signal strength" (12) is greater than 30% and there is not more than 30% difference between "Minimum signal strength" (12) and "Maximum signal strength" (13)
Average response time (17) is less than 5 ms
Less than a total of five "Lost Packets" (15) or "Retries" (16)

Results:

YES - The machine has established communication and values are in the normal range.
Repair: Sponsor and operate the machine again. If the problem recurs, then refer to Troubleshooting, Testing, and Adjusting, "Local Area Radio Network - Test" in this manual.
STOP
NO - The machine has not established communication or values are not in the normal range. Proceed to Test Step 5.

Test Step 5. Check the LARN Diagnostics.

Go to the http://10.10.0.1/ site server computer web page.

Select the "Diagnostics" tab (1).
Note: Enter the username and password if required.

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Illustration 6	g01997555
(1) "Diagnostics" tab (2) "Network" table (18) "LARN"

Select "LARN" (18) from "Network" table (2) .

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Illustration 7	g01842204
Typical example (19) "OK" status (20) "Last Seen" status

Check the status of all LARN radios.

Expected Result:

All LARN radios for the area are listed and have "OK" status (19) .

Results:

YES - All LARN radios report OK. The cause is most likely a loss of power during starting, if the problem occurred during starting or immediately after starting.
Repair: Check a loss of power during starting. Refer to Troubleshooting, Testing, and Adjusting, "Communication to Machine at Startup - Test" in this manual.
STOP
YES - All LARN radios report OK. If the machine was moving when the problem occurred, then the cause is most likely inadequate LARN signal strength in the affected area.
Repair: Check an inadequate LARN signal strength in the affected area. Refer to Troubleshooting, Testing, and Adjusting, "Local Area Radio Network - Test" in this manual.
STOP
YES - All LARN radios report OK.
Repair: Check Onboard Radio signal strength. Refer to Troubleshooting, Testing, and Adjusting, "Onboard Radio Signal Strength - Test" in this manual.
STOP
NO - One or more LARN radios missing or reporting "Last Seen X mins ago".
Repair: Check that one or more LARN radios missing or reporting "Last Seen X mins ago". Refer to Troubleshooting, Testing, and Adjusting, "Local Area Radio Network - Test" in this manual.
STOP

Test Step 6. Failed Machine Component (Other Than Onboard Radio).

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Illustration 8	g01842236
Typical example (9) "Reboot" (21) "Automation ECM" status (22) "Ladar Interface Control Modules" status

Check "Automation ECM" status (21) and "Ladar Interface Control Modules" status (22) .

Expected Result:

"Automation ECM" status (21) and "Ladar Interface Control Modules" status (22) reporting "OK".

Results:

YES - All reporting "OK". The communications to the machine should be working. Proceed to Test Step 7.
NO - "Automation ECM" or "Ladar Interface Control Modules" reporting "FAILED (NOT RESPONDING)".
Repair: Check for "Automation ECM" or "Ladar Interface Control Modules" reporting "FAILED (NOT RESPONDING)". Refer to Troubleshooting, Testing, and Adjusting, "Onboard Radio Signal Strength - Test" in this manual.
STOP

Test Step 7. Failed Machine Component.

Sponsor and operate the machine.
ReferenceFor information on sponsoring and operating a machine, refer to Operation and Maintenance Manual, "Preparing for Operation".

If sponsoring and operating the machine fails, select "Reboot" (9) on the machine diagnostics web page. Wait about one minute and retry sponsoring and operating the machine.

Expected Result:

Machine is sponsored and operated.

Results:

YES - Machine sponsored and operated.STOP
NO - Failed machine component.
Repair: Check for a failed machine component. Refer to Troubleshooting, Testing, and Adjusting, "Onboard Radio Signal Strength - Test" in this manual.
STOP