Basic Principles of Serial Data Transmission
2.8 Configuration data
CP 341 Point-to-Point Communication, Installation and Parameter Assignment
Manual, 09/2008, A5E02191071-01 95
Data flow control
The table below contains a description of the parameters for data flow control.
Data flow control is not possible with the RS 485 interface. RTS/CTS data flow control is only
supported with the RS 232C interface.
Table 2- 17 Data flow control (printer driver)
Parameters Description Range of values Default value
Data flow control Defines which data flow
control procedure is used.
None
XON/XOFF
RTS/CTS
None
XON character
(Only for data flow control
with XON/XOFF.)
Code for XON character
• For 7 data bits:
0 to 7FH (hex)
• With 8 data bits:
0 to FFH (hex)
(Depending on whether you
set 7 or 8 data bits for the
character frame.)
11 (DC1)
XOFF character
(Only for data flow control
with XON/XOFF.)
Code for XOFF character
• For 7 data bits:
0 to 7FH (hex)
• With 8 data bits:
0 to FFH (hex)
(Depending on whether you
set 7 or 8 data bits for the
character frame.)
13 (DC3)
Wait for XON after XOFF
(wait time for CTS = ON)
(Only for data flow control
with XON/XOFF or
RTS/CTS.)
Period of time for which the
CP 341 should wait for the
XON code or for CTS="ON"
of the communication partner
when sending.
Up to 655350 ms
in 10 ms increments
2000 ms
X27 (RS 422/485) interface
You will find a description of the parameters for the X27 (RS 422/485) interface in the table
below.
Table 2- 18 X27 (RS 422/485) interface (ASCII driver)
Parameters Description Range of values Default value
Receive line initial state R(A)5V/R(B)0V: This initial
state supports BREAK
detection; it cannot be
deactivated.
R(A)0V/R(B)5V: This initial
state does not support break
detection.
R(A) 5V / R(B) 0V
R(A) 0V / R(B) 5V
R(A) 5V / R(B) 0V
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