Moxa Technologies C360 manual Appendix a

Page 42

Appendix A

Troubleshooting

Basically, to have data communication work, many things are involved. The following picture will help user to inspect where the problem is.

AP 1

API

OS

Driver

PC 1

With

Serial Board

Serial Port

or

MDM MDM

AP 2

API

OS

Driver

PC 2

With

Serial Board

Serial Port

The philosophy for quickly solving a communication problem lies in isolation of the real question point. Communications would fail if any point on the way from AP 1 to AP 2 went wrong. The error (messages) could only be the clue to the solution but may not be the final answer. Even same error symptom may result from totally different cause(s).

Common problems and possible solutions are listed below. If user still has problems, contact the dealer or Moxa for help. Or report it using "Problem Report Form" to the dealer at once for technical support.

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Contents C360 Copyright Notice Moxa Internet Services Table of Contents Appendix a Troubleshooting Page Introduction OverviewSpecifications Features and SpecificationsFeatures SystemControl Board Async ConcentratorCheck list C360 Control BoardRack Mount Kit Hapter 2 Hardware Installation Installation of C360Hardware Installation ∙ ∙ Chapter Hub Rack Mount KitLED Indicators DiagnosticsSerial Number of the Async Concentrator ~10~ Hardware Installation ∙ ∙ Chapter Software Driver Installation and Setup Driver InstallationControl Board Configuration Driver Setup Driver Loading~14~ Driver Removal Moxa Serial Port Naming ConventionAdministrations DOS API-232 Library and Programming LanguagesAsync Concentrator Status Monitoring Async Concentrator Diagnostics Data ScopeDriver Installation For Unix UsersFor Unix Users ∙ ∙ Chapter Moxa TTY and Non-TTY Ports Moxa TTY PortsConvention of the Moxa TTY device name is Tty + a + B + C Moxa Non-TTY PortsConfiguration Async Concentrator Serial Number TTY or Non-TTYMonitoring DiagnosticsDriver Reset Concentrator RestartProgramming the Moxa TTY Ports Using Standard Unix API Terminal EmulationExtended Function List for Moxa TTY Ports Function DescriptionMobufed Mhwflow Programming the Moxa Non-TTY Ports Using Moxa Unix API-232 Function ListClose a non-TTY port Function DescriptionOpen a non-TTY port Read data from a non-TTY portNon-TTY port parameter setting Write a string of data to Tx bufferSend break signal Flush Tx/Rx buffer data Read the length of data queued in Rx buffer Read the length of data queued in Tx buffer Get modem line status Set modem line control signal DTR Set modem line control signal RTSSetting CTS/RTS and XON/XOFF flow control Disable transmitting data Enable transmitting dataAppendix a Hardware causes and solutions Software Cause and SolutionSoftware Causes and Solutions Solution RTS DSR CTS DTRHardware Cause and Solution Under UNIX, the newly rebuilt kernel could not bootAppendix B Ethernet CablingAsync Concentrator and Serial Number RJ-45 Female Connector RS-232 Cable WiringDTE GND RTS CTS DSR Appendix C Appendix C ∙ Problem Report Form Customer name Company Date Tel FaxWarranty