Configuring
6.2 Configuration via PROFINET IO
SIMATIC RF185C, RF186C, RF188C, RF186CI, RF188CI
58
Operating Instructions, 04/2020, C79000-G8976-C512-03
Parameter
Parameter value
Default value
Description
Specifying end detec-
tion
After character delay
time elapses
On receipt of fixed num-
ber of characters
On receipt of the end
delimiter(s)
After character
delay time elapses
Specifies the end detection of a received frame:
•
After character delay time elapses:
The frame has neither a fixed length nor de-
fined end delimiters. The end of a frame is
indicated by a gap in the character se-
quence. The size of this gap is specified by
the character delay time.
•
On receipt of fixed number of characters:
The length of the received frames is always
the same. When data is received, the end of
the frame is recognized when the set num-
ber of characters has been received.
•
On receipt of the end delimiter(s):
At the end of the frame, there are one or two
defined end delimiters. When data is re-
ceived, the end of the frame is recognized
when the configured end delimiter(s) is/are
received.
No. of end delimiters
1
2
1
Selection of the number of end delimiters.
A maximum of 2 end delimiters can be config-
ured. When data is received, the end of the
frame is recognized when the selected end
delimiter combination is received.
1st end delimiter
0...255
3
Entry of the first end delimiter of a maximum of
two end delimiters for the end criteria "On re-
ceipt of the end delimiter(s)". The selected end
delimiter or the selected end delimiter combina-
tion limits the length of the frame.
Parameter value depending on the "Data bits"
parameter.
2nd end delimiter
0...255
0
Entry of the second end delimiter of a maximum
of two end delimiters for the end criteria "On
receipt of the end delimiter(s)". The selected
end delimiter combination limits the length of
the frame.
Parameter value depending on the "Data bits"
parameter.
Frame length
1...233 / 1...229
233
Entry of the frame length in bytes for the end
criterion "On receipt of fixed number of charac-
ters".
Character delay time
0...65535
15
Entry of the time [ms] that can elapse until a
frame end is recognized. Select the character
delay time dependent on the sending behavior
of your communication partner. Depending on
the data transmission speed the character de-
lay time is limited to a minimum value.
Note that the ASCII driver also pauses between
two frames during transmission.
