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S5-100U
The CP 521 is a powerful peripheral module that can be used with the SIMATIC systems S5-90U,
S5-95U, and the S5-100U. It has its own central processor (cannot be used with the CPU 100,
version 8MA01).
A separate manual for this module is available. The order number is 6ES5 100-0UD21.
A brief overview of the functions of this module follows.
Function
You can operate the CP 521 module in both the "printer mode" and the "ASCII mode".
Printer Mode
In the printer mode, you can transfer message texts to a printer. You can print process data and
process malfunctions. The printing of messages to a printer does not increase the response time of
the programmable controller. You can print the following types of information:
•
Messages configured by the user in a memory submodule in data blocks DB2 to DB63
•
Time of day and date from the module's real-time clock
•
Values for variables, transferred to the communications module via the S5-100 bus
The messages can be stored in an EPROM or in an EEPROM submodule (up to 8 Kbytes).
ASCII Mode
In the ASCII mode, the module can exchange data with other peripheral devices such as a computer
terminal, CP 523 or other CP 521s.
You can network programmable controllers to each other (point-to-point connection). The ASCII
mode makes it possible to transfer data messages between the CPU and a peripheral device
connected to the CP 521.
In the ASCII mode, the module's real-time clock can be used for tasks in the user program requiring
the date and time of day.
The following statements are valid for both modes:
•
The peripheral device and the module are connected via a serial interface. You can choose (by
setting parameters) between a passive TTY current-loop interface or an RS-232 V.24 interface.
•
The DB editor of the programmers makes parameter setting to the printer interface and con-
figuration of message texts easier. You can either store the parameters for the printer interface
in DB1 on the memory submodule or transfer them directly into the user program.
The CP 521 can be programmed and operated without COM software.
EWA 4NEB 812 6120-02
Function Modules
15-53
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