66 iNET Series Reference Manual 05-2806A01, Rev. J
• Packet Redundancy Mode— For proper operation, all radios’
Serial Packet Redundancy mode must match (Single Packet
mode vs. Packet Repeat mode). This is because a transceiver,
when in Packet Repeat mode, sends 12 extra characters
(sequence numbers, etc.) to control the delivery of the
repeated data. Misconfigurations can result in undesired
operation.
•
Data Baud Rate—Data rate (payload) for the COM port in
bits-per-second. [
1,200–115,200; 19200]
• Configuration—Formatting of data bytes, representing data
bits, parity and stop bits. [
7N1, 7E1, 7O1, 8N1, 8E1, 8O1, 8N1, 7N2,
7E2, 7O2, 8N2, 8E2, 8O2; 8N1
]
• Flow Control [Com2 Only]—RTS/CTS handshaking between
the transceiver and the connected device. [
Enable, Disable; Dis-
abled
]
• Serial Mode—When seamless mode is selected data bytes
entering the serial data port are sent over the radio link with-
out delay, but the receiving end will buffer the data until
enough bytes have arrived to cover worst-case gaps in trans-
mission. The delay introduced by data buffering may range
from 22 to 44 ms, but the radio will not create any gaps in the
output data stream. This permits operation with protocols
such as MODBUS™ that do not allow gaps in their data
transmission. [
Seamless, Custom; Seamless]
• Seamless Inter-Frame Delay— Amount of time (in number of
characters) that signal the end of a message (inter-character
time-out). UDP packet sizes are delimited and sent out based
on the Seamless Inter-Frame Delay only when receiving data
through the serial port. MODBUS defines a “3.5-character”
setting. [
1–65,535; 4]
TIP: To convert this delay into milliseconds, multiply the
number of characters configured here by 10 (there are usu-
ally 10 bits in each byte) and divide the result by the data
rate of the serial port (in kbps).
•
Custom Data Buffer Size (Custom Packet Mode only)—Maxi-
mum amount of characters, that the Remote end will buffer
locally before starting to transmit data through the serial port.
[
16, 32, 64, 128, 256; 32]
• Commit Changes and Exit Wizard—Save and execute changes
made on this screen (Shown only after changes have been
entered.)
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