Rs-485 tab, Modem tab – Comtrol Multiport Modems Windows NT User Manual

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Driver and Adapter Information

RS-485 Tab

This tab appears if RS-485 is enabled in the driver Options tab. Use it to enable
and configure RS-485 on specific ports.

If you want to use RS-485, you must have:

•

hardware that supports RS-485, and

•

RS-485 enabled on the Options tab and the individual port.

Override and lock to RS-485 toggle mode

Select this check box to switch the selected port to RS-485 mode.

RS-485 Toggle RTS Low

Select this check box to toggle the RTS output signal low during data
transmission. If this box is not checked, RTS is toggled high (asserted) during
data transmission.

Modem Tab

This tab appears if the selected port is a Comtrol modem product.

There is one control: the
Reset button. To reset the
selected modem to its default
(power-on) state, select the
button.

This resets only the modem
on the selected COM port, on
the selected adapter. This
option cannot be used to
reset non-Comtrol modems.

Note: Some Comtrol

modems do not
support reset. To
determine whether
your modem supports
Reset, see the readme
file.