Configuring and Parameter Assignment the CP 440
5.4 Configuration data
Point-to-point connection CP 440 Installation and Parameter Assignment
78 Manual, 09/2007, A5E00057742-03
Baud Rate / Character Frame
The following table describes the transmission rate/character frame.
Table 5-12 Baud Rate / Character Frame (3964(R) Procedure)
Parameters Description Value Range Default Value
Baud rate Speed of data transmission in bits per second (baud)
• 300
• 600
• 1200
• 2400
• 4800
• 9600
• 19200
• 38400
• 57600
• 76800
• 115200
9600
Start bit During transmission, a start bit is prefixed to each character to
be sent.
1 (fixed value)
Data bits Number of bits onto which a character is mapped.
• 7
• 8
8
Stop bits During transmission, stop bits are appended to every character
to be sent, indicating the end of the character.
• 1
• 2
1
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 thus
enhancing parity.
A parity of "none" means that no parity bit is sent.
It is not possible to specify "none" if 7 data bits are set.
• none
• odd
• even
even
Priority A partner has high priority if its send request takes precedence
over the send request of the other partner. A partner has low
priority if its send request must wait until the send request of the
other partner has been dealt with. With the 3964(R) procedure,
you must configure both communication partners with different
priorities, i.e. one partner is assigned high priority, the other low.
• low
• high
high
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