W&T 58031, Руководство пользователя

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94
W&T
Configuration of the serial port
3. Accept only by HIGH – Connection establishment
of a TCP client is only accepted if a HIGH level (+3...12V)
is present on the corresponding input. Likewise the
connection is rejected when there is a LOW level.
4. NO (Manual IN) – The selected input is ignored by
the Com-Server and plays no role either in data
transmission or connection control.
n
XON/XOFF
Here the handshake can be configured for XON/XOFF
separately for each data direction. "
XON/XOFF Receive "
switches processing of this control character for serial
receiving on: After receipt of an XOFF sent by the RS232
terminal device, the Com-Server stops serial data output
until it receives an XON. If "
XON/XOFF Send " is turned
on, the Com-Server generates an XOFF when it is no
longer able to receive serial data.
n
XON/XOFF (Filter)
If XON/XOFF is turned off for flow control, this option
can be used to separately determine for both data
directions whether the Com-Server filters these control
characters out of the actual data.
1. Send-Filter (Data direction
r
serial)
If this option is turned on and XON or XOFF characters
occur in the actuqal data, the Com-Server filters them
out and does not pass them along to the terminal
device. Select this mode generally for bi-directional
RS232 connections, since otherwise you will have
problems with data traffic. If the Send-Filter option is
turnd off, all the data including the XON and XOFF
characters are sent unfiltered on the RS232 interface.
This mode only makes sense if the connected terminal
device is a graphics printer whose data stream can be
expected to contain handshake characters.