Parameterization Data Of The Printer Driver - Siemens SIMATIC CP 340 User Manual

Basic Principles of Serial Data Transmission
2.7 Parameterization Data
2.7.4

Parameterization data of the printer driver

Introduction
You can use the parameter assignment data of the printer driver to generate the
transmission-specific parameters and the message texts for printout.
Parameter assignment data of the printer driver
With the CP 340: Point-to-Point Communication, Parameter Assignment user interface, you
can specify:
● The parameters for the physical layer (layer 1) of the printer driver
● The message texts for printout
● The page layout, character set and control characters for the message texts
You will find a detailed description of the parameters below.
Baud rate/Character frame
The table below contains descriptions of and specifies ranges of values for the relevant
parameters.
Table 2- 11 Baud rate/Character frame (printer driver)
Parameter Description
Baud rate Data transmission rate in bps
Start bit During transmission, a start bit is prefixed to each
character to be sent.
Data bits Number of bits onto which a character is
mapped.
Stop bits During transmission, stop bits are appended to
every character to be sent, indicating the end of
the character.
Parity A sequence of information bits can be extended
to include another bit, the parity bit. The addition
of its value ("0" or "1") brings the value of all the
bits up to a defined status. This improves data
integrity.
A parity of "none" means that no parity bit is sent.
"Any" parity indicates that the CP 340 has set the
send parity to a value of "0".
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Range of values Default value
9600
2400

4800

9600

1 1
(fixed value)
8
7

8

1
1

2

Even
None

Odd

Even

Any

PtP coupling and configuration of CP 340
Manual, 04/2011, A5E00369892-03