Specifications

3
General Information Section 1-1
1.1 General Information
The operating terminals can be conveniently connected to the Siemens PLCs S90 -
S155 thus making the operating terminals the perfect man-machine-interface for
your Siemens PLC.
The operating terminal is connected to the PU (programming unit) interface of the
PLC. An additional communications module is not necessary. The data communi-
cation on the interface is handled by the PU protocol AS511.
Connections to the following Simatic S5 PLC types are supported:
SIMATIC S5-90U (8-bit CPU)
SIMATIC S5-95U (8-bit CPU)
SIMATIC S5-100U
CPU 100 (8-bit CPU)
CPU 102 (8-bit CPU)
CPU 103 (8-bit CPU)
SIMATIC S5-115U
CPU 941 (8-bit CPU)
CPU 942 (8-bit CPU)
CPU 943 (8-bit CPU)
CPU 944 (8-bit CPU)
CPU 945 (8-bit CPU with 20-bit address range)
SIMATIC S5-135U
CPU 922 (16-bit CPU)
CPU 928 (16-bit CPU)
CPU 928B (16-bit CPU)
SIMATIC S5-155U
CPU 948 (20-bit CPU)
Connection to the following Simatic S5 PLC type is
not supported:
SIMATIC S5-135U
CPU 921 (16-bit CPU)
The software components of the system are fully adapted to the parameters and
marginal conditions of the PU interface.
This offers the user the following advantages:
- Random read and write access to all data within the PLC. Data from existing
PLC programs can be displayed and modified directly on the operating terminal.
Since the communication data do not need to be stored in a specified address
area or data type area, it is not necessary to adapt the PLC program to the
operating terminal in any respect.
- The operating terminal automatically polls the freely definable data areas for
cyclic data.
- Use of a PU multiplexer allows simultaneous connection of the operating termi-
nal and Siemens programming unit (PU).