Moxa Technologies C360 manual Hardware Cause and Solution

Appendix B ∙ ∙ Technical Reference

Hardware Cause and Solution:

aWrong IRQ setting. If the hardware and software IRQ setting do not match. MOXA driver will use a polling scheme and thus causes slow operation. Try to match the IRQ settings.

6Under UNIX, when respawning quite a few number of tty ports, the following error messages appear: "Time out table overflow", "File table overflow", "Region table overflow".

Software Cause and Solution:

The above error messages imply that the system resources are exhausted. User 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" "File table overflow" "Region table overflow"

:NCALL parameter too small.

:NFILE or NINODE parameter too small.

:NREGION or NPROC parameter too small.

7Under UNIX, the newly rebuilt kernel could not boot.

Software Causes and Solutions:

The C360 driver might not be built into the new kernel correctly.

a Please use the last good kernel backup to boot again. The kernel backup in UNIX is /unix.moxa or /stand/unix.moxa.

b Then remove the C360 driver. Refer to Section 4.3 for driver removal.

c Re-install the C360 driver once more.

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