Port Settings
Protocol
From the drop-down menu, select the protocol type for the selected
channel. The default setting is
RS232
.
Flow Control
Flow control manages data flow between devices in a network to ensure it
is processed efficiently. Too much data arriving before a device is
prepared to manage it causes lost or retransmitted data.
None
is the
default.
Baud Rate
The unit and attached serial device, such as a modem, must agree on a
speed or baud rate to use for the serial connection. Valid baud rates are
300, 600, 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200, and
230400 baud. Additionally, 921600 and 460800 baud rates are available
when CPU is set to High. The default setting is
9600
.
Data Bits
Indicates the number of bits in a transmitted data package. The default
setting is
8
.
Parity
Checks for the parity bit. The default setting is
None
.
Stop Bits
The stop bit follows the data and parity bits in serial communication. It
indicates the end of transmission. The default setting is
1
.
Pack Control
Enable Packing
Select to enable packing on the NetDirect.
Two firmware-selectable packing algorithms define how and when packets
are sent to the network.
The standard algorithm is optimized for applications in which the unit is used
in a local environment, allowing for very small delays for single characters,
while keeping the packet count low.
The alternate packing algorithm minimizes the packet count on the network
and is especially useful in applications in a routed Wide Area Network (WAN).
Adjusting parameters in this mode can economize the network data stream.
Disabled by default.
Idle Gap Time
Select the maximum time for inactivity. The default time is
12
milliseconds.
Match 2 Byte Sequence
Use to indicate the end of a series of data to be sent as one group. The
sequence must occur sequentially to indicate end of the data collection to the
NetDirect. The default setting is
No
.
Match Bytes
Use to indicate the end of a series of data to be sent as one group. Set this
value to
00
if specific functions are not needed.
Send Frame Immediate
After the detection of the byte sequence, indicates whether to send the data
frame or the entire buffer. Select
Yes
to send only the data frame. The default
setting is
No
.
Send Trailing Bytes
Select the number of bytes to send after the end-of-sequence characters. The
default setting is
None
.
Summary of Contents for NetDirect
Page 1: ...NetDirect User Guide ...
