Siemens SIMATIC S5 CP 523 Manual page 115

CP 523
7.3 Setting the CP 523 Parameters in Communications Mode
The CP 523 is supplied with default values for all parameters.
• Parameters for the interface to the peripheral device (baud rate, type of interface, handshake
mode ...)
The parameters must conform to the specifications and settings on/in the peripheral device.
• Specifications of the XON/XOFF protocol
• Parameter setting data for data transfer in Communications mode (message length, end-of-
text character).
• Correction value for the accuracy of the integral clock
The integral clock is set for an ambient temperature of 35 °C. If the CP 523 is used in other
ambient temperatures, you can increase the accuracy of the clock by configuring a correction
value.
If you want to initialize the CP 523 with different data, there are ways of transferring parameter
setting data to the CP:
• Store the parameter setting data on a memory submodule in data block (DB) 1 and plug the
initialized memory submodule into the CP 523 ( 7.3.1).
• Transfer the parameter setting data to the CP 523 in the user program. The restart
organization blocks are used for this purpose ( 7.3.2). No memory submodule is required for
operating the CP 523.
In order to transfer the parameter setting data as simply as possible, the data is divided into
parameter blocks. This subdivision is the same as in Print mode. Parameter blocks 1, 3, 4, 5, 6 and 8
are only significant in Print mode and are not included in the table.
Parameter
Block No.
0
2
7
9
Reader's note : Refer to Section 7.3.1 or 7.3.2, depending on whether you want to set your
CP 523 parameters via a memory submodule or in the user program:
Section 7.3.1:
Section 7.3.2:
EWA 4NEB 811 6044-02a
Table 7-1. Parameter Blocks in Communications Mode
Serial interface parameters
XON/XOFF protocol (only relevant if XON/XOFF protocol is used in
Interpretive mode)
Desired mode
Parameter setting data for data transfer in Communications mode
Correction value for the integral clock
Setting the CP 523 parametersvia a memory submodule
Setting the CP 523 parametersin the user program
Communications Mode
Contents
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