Moxa Technologies C218 user manual Moxa port responds too slowly or abnormal key operation

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UNIX

This section is specific for troubleshooting under UNIX. For general problems and solutions, please see previous Section "General Troubleshooting".

1.During system reboot, error message “WARNING! C218 Turbo/PCI (XX000;BusNo=X;DevNo=X) not found!” appears.

The possible cause is memory conflict or defective board. Please shutdown the system first, and then refer to the corresponding problem and solutions in previous Section “General Troubleshooting”.

2.During system reboot, error message “ERROR! C218 Turbo/PCI (MemBank=XX000) download failed!” appears.

The possible cause is memory conflict or defective board. Please shutdown the system first, and then refer to the corresponding problem and solutions in previous Section “General Troubleshooting”.

3.MOXA port responds too slowly or abnormal key operation.

The applications are not compatible with the C218 Turbo/PCI On-board line discipline. The only way to work it around is to set On-board line discipline feature to “Disable” in [Board] sub-menu of Advanced configuration (Section “UNIX” of Chapter “Software Installation”).

4.When respawning quite a few number of tty ports, the following error messages appear: “Time out table overflow”, “File table overflow”, “Region table overflow”.

The above error messages imply that the system resources are exhausted. You should tune the kernel parameters to a larger value and rebuild the kernel to be able to accommodate the new configuration. Refer to UNIX system manual about how to tune the parameters and rebuild kernel.

“Time out table overflow”:

NCALL parameter too small.

“File table overflow”:

NFILE or NINODE parameter too small.

“Region table overflow”:

NREGION or NPROC parameter too small.

6-4Intellio C218Turbo /PCI User's Manual

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Contents Intellio C218Turbo/PCI User’s Manual March 3rd EditionDisclaimer Copyright NoticeTrademarks Moxa Internet Services About This Manual Table of Contents Troubleshooting Technical ReferenceOverview Intellio The Intelligent Multiport Serial I/O SolutionsPCI Solution Low Host Processor OverheadSurge/Isolation Protection Powerful Serial Comm Developing ToolsAsic Design, Compact Size Major Operating System SupportIntroduction FeaturesCheck List Opt8F/Opt8Z Opt8A/Opt8B/Opt8SOpt8C/Opt8D Opt8JInstallation Guide Page Hardware Installation Installing the Intellio C218Turbo/PCI Control BoardInstalling Connection Option Opt8x Opt8J/Opt8F/Opt8Z Operating Opt8J Hardware Installation RS-422 Mode RS-485 ModePage Software Installation Windows NTInstalling Driver Software Installation Page Uart Fifo Page Configuring Board and Port Page Adding/Removing Board Updating DriverWindows 95/98 Removing DriverInstalling Driver Yes Software Installation First Time Driver Installation Stage WindowsPage Click Next Port Configuration Stage Software Installation Board and Port Ready Stage Without restarting the Windows 98 systemPage Configuring Board and Port Page Software Installation Uart Fifo Updating driver Unix For SCO Unix or SCO OpenServer or Xenix Driver will start successfully later Moxa TTY Device Naming Convention Administration Utility mxadm Basic ConfigurationNon-Modem and Modem Baud Rate Baud Rate Mapping Advanced ConfigurationOn Board Line Discipline Feature Response RTS/CTS Hardware Flow ControlSoftware Installation Performance Tuning Board ResetDriver Removal Setting Moxa Ports to Terminal Checking Board Initialization StatusPage Installation Windows NT and Windows 95/98PComm Programming Library UtilitiesSerial Programming Tools Diagnostic for Moxa boards only Monitor for Moxa boards under Windows NT Only Serial Programming Tools Terminal Emulator Extended Unix Ioctl Commands Programming the Moxa PortsMobufed Mtcrts Mlowater Mstatus Mhwflow Port Monitoring Serial Programming Tools Terminal Emulator Page Solution RS-485 Programming for Opt8JSolution Connection Option Opt8x and Cable Wiring RS-232 Cable Wiring for Opt8A/B/C/D/SOpt8A/S DCE, DB25 Female Connection Option Opt8x and Cable Wiring DTE DeviceOpt8D DTE Device Opt8B/C Opt8A/S DTE Device GND RTS CTS DTR DSR DCD RS-422 Cable Wiring for Opt8J/F/Z Followings are operation modes for RS-422 RS-485 Cable Wiring for Opt8J RS-485 Pinouts for Opt8JRS-422/485 Impedance Matching Page Troubleshooting General TroubleshootingSoftware Causes and Solutions Windows NT system panic blue screen Moxa port responds too slowly or abnormal key operation Newly rebuilt kernel could not boot Page Specifications AppendixDual-Ported RAM Unix SVR4.2 XenixDB62 Connector Pinouts Uart 16C550CProblem Report Form Intellio C218Turbo/PCIReturn Procedure

C218 specifications

Moxa Technologies, a leader in the field of industrial networking and communication solutions, has made significant strides in enhancing operational technology with its C218 series of industrial Ethernet switches. The Moxa C218 is designed to meet the demanding requirements of industrial automation, ensuring robust performance and reliability in critical applications.

One of the standout features of the C218 series is its advanced networking capabilities. The switch supports Layer 2 switching functionality, which allows for efficient traffic management and improved network performance. With support for up to 8 Ethernet ports, the C218 can seamlessly connect multiple devices, ensuring that communication flows smoothly across the network.

The C218 is designed with resilience in mind, equipped with features such as redundancy support. It includes Rapid Spanning Tree Protocol (RSTP) and Media Redundancy Protocol (MRP), which minimize downtime and ensure continuous network operation even in the event of failures. These features make the C218 an ideal choice for mission-critical applications where reliability is paramount.

Another significant aspect of the C218 is its ability to withstand challenging environmental conditions. With an extended operating temperature range, the switch can handle extreme temperatures typical in industrial settings. Its ruggedized design protects against dust, moisture, and vibrations, ensuring that it performs consistently in harsh environments.

Security is a crucial consideration in modern industrial networks, and the C218 addresses this with built-in security features. The switch supports various authentication mechanisms and allows for VLAN configurations, helping to segment network traffic and protect sensitive data.

Moxa's C218 also provides convenience through its user-friendly management interface. It supports SNMP, allowing for simple network monitoring and management. Additionally, the switch's web-based management and command-line interface (CLI) make it easy for network administrators to configure and monitor the device efficiently.

In summary, the Moxa Technologies C218 switch is a reliable, feature-rich solution tailored for the industrial sector. With its excellent networking capabilities, robust design, environmental resilience, security features, and user-friendly management tools, the C218 is well-equipped to meet the demands of today's industrial automation challenges, helping businesses optimize their operations while ensuring network integrity.