Default = None
Wikipedia:
Parity is a method of detecting errors in transmission. When parity is used with a serial
port, an extra data bit is sent with each data character, arranged so that the number of 1-bits in each
character, including the parity bit, is always odd or always even. If a byte is received with the wrong
number of 1s, then it must have been corrupted. However, an even number of errors can pass the
parity check.
Stop bits
List box: possible values
Default = 1
Wikipedia:
Stop bits sent at the end of every character allow the receiving signal hardware to detect
the end of a character and to resynchronise with the character stream.
Idle [bytes]
Default = 5 [0 - 2000]
This parameter defines the maximum gap (in bytes) in the received data stream. If the gap exceeds
the value set, the link is considered idle, the received frame is closed and forwarded to the network.
MRU [bytes]
Default = 1600 [1 - 1600]
MRU (Maximum Reception Unit) — an incoming frame is closed at this size even if the stream of bytes
continues. Consequently, a permanent data stream coming to a COM results in a sequence of MRU-
sized frames sent over the network.
Note
Very long frames (>800 bytes) require good signal conditions on the Radio channel
and the probability of a collision increases rapidly with the length of the frames. Hence
1.
if your application can work with smaller MTU, it is recommended to use values in 200
– 400 bytes range.
2.
This MRU and the MTU in Radio settings are independent. However MTU should be
greater or equal to MRU.
Flow control
List box: None, RTS/CTS
Default = None
RTS/CTS (Request To Send / Clear To Send) hardware flow control (handshake) between the DTE
(Data Terminal Equipment) and RipEX (DCE - Data Communications Equipment) can be enabled in
order to pause and resume the transmission of data. If RX buffer of RipEX is full, the CTS goes down.
Note:
RTS/CTS Flow control requires a 5-wire connection to the COM port.
Protocol*
List box: possible values
Default = None
Each SCADA protocol used on serial interface is more or less unique. The COM port daemon performs
conversion to standard UDP datagrams used in RipEX Radio network. Each protocol has its individual
RipEX Radio modem & Router – © RACOM s.r.o.
118
Advanced Configuration
Summary of Contents for RipEX 1.12.2
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Page 172: ...RipEX Radio modem Router RACOM s r o 172 Safety environment licensing...
Page 173: ...173 RACOM s r o RipEX Radio modem Router Safety environment licensing...
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Page 176: ...RipEX Radio modem Router RACOM s r o 176 Safety environment licensing...
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Page 187: ...Appendix C Revision History 187 RACOM s r o RipEX Radio modem Router Revision History...
