Horner-apg QX651 OCS Manuel d'utilisateur télécharger pdf (Page 90)

CH. 16 MAN0798-04-EN

August 20, 2009 Page 90 of 95 ECN # 979

16.1.1 Connecting Troubleshooting Checklist

1. Programming and debugging must use MJ1.

2. Controller must be powered up.

3. Assure that the correct COM port is selected in Cscape.

Tools/Options/Communications Port.

4. Assure that a straight through (non null modem) serial cable is being used between PC and

controller.

5. Check that a Loaded Protocol or ladder is not actively using MJ1. Taking the controller out of run

mode from the System Menu on the controller will make MJ1 available to Cscape.

6. Make sure the COM port of the PC is functioning. An RS-232 serial loopback and Microsoft

HyperTerminal can determine positively if the COM port is working. Or connect to an alternate

device to determine if the port is working.

7. Successful communications with USB-to-serial adapters vary. If in doubt, Horner APG offers a

USB to serial adapter. Part number HE500USB600.

16.2 Local Controller and Local I/O

The system menu provides the following status indications that are useful for troubleshooting and system

maintenance.

• Self-test results, diagnostics.

• RUN and OK status

• Network status and usage

• Average logic scan rate

• Application memory usage

• Loaded firmware versions

• Loaded protocols

• CompactFlash access

To view the system menu, press the System key on the keypad. See page

41 for full details on the

system menu diagnostic capabilities.

16.2.1 Local I/O Troubleshooting Checklist

1. Verify the controller is in RUN mode.

2. Check diagnostics to insure controller passed self-tests.

View diags in System Menu or in Cscape, click; Controller/Diagnostics

3. Check data sheets to insure proper wiring.

4. Ensure that software configuration is correct and make sure any jumpers on I.O modules are set

correctly.

5. Check data sheets for voltage and current limits.

6. Take ladder out of the picture. From Cscape set controller to “Do I/O” mode. In this mode inputs

can be monitored and outputs set from a data watch window in Cscape without interference from

the ladder program. Some I/O problems are only a result of a mistake in the ladder program.

WARNING: Setting outputs ON in Do I/O mode can result in injury or cause machinery to

engage in an unsafe manner depending on the application and the environment.

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Horner-apg QX651 OCS Manuel d'utilisateur Page 90

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