User`s guide

MBX Driver Help
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respond to the command messages, resulting in lengthy timeouts on the Modbus Plus
network. Therefore, we strongly recommend that you enable the watchdog timer for
adapter cards that support it.
Timeout
The user may select the desired timeout interval, or disable the watchdog timer.
The recommended timeout is 2.5 seconds for adapter cards that support the watchdog
timer. For compatibility with older adapter cards, the default value is Disabled.
Operation
The kernel mode device driver can operate in either polled mode or interrupt mode.
Selecting the proper mode of operation depends on the adapter card configuration. The
interrupt mode provides better performance than the polled mode, however, interrupt
mode requires more processor overhead. It is permitted to mix interrupt and polled
modes of operation for different cards in the same system.
Polled Mode / Interrupt Driven
The user may select the polled or interrupt mode of operation. The default is Polled
Mode.
Polling Interval
This parameter specifies the polling interval, in milliseconds, that the driver will use when
running in polled mode.
The valid range for the polling interval is 20-1000 msec. The default value is 20 msec.
Resources
Memory Address
This parameter specifies the base address of the adapter card. This address must match
the switch settings on the card and must be unique for each adapter card.
The default for this parameter is D0000.
Interrupt IRQ
When interrupt mode is selected, this parameter specifies the IRQ number for the
interrupt line used. This IRQ number must match the IRQ setting on the adapter card
and must be a unique value for each card in the system.
The default for this parameter is 5.
To change the IRQ setting on the adapter card, follow the procedure below: