Manual

Operation
4-24
Positioner SIPART PS2/SIPART PS2 PA
C79000-G7476-C150–01
In this example, all files supported by the device are transmitted in the
input or output direction. 256 (W#16#100) is selected as the initial I/O
address.
Byte 15
Byte 15
15 bytes of input data consisting of the following:
READBACK 5 bytes
RCAS_OUT 5 bytes
CHECKBACK 3 bytes
POS_D 2 bytes
Byte 10
10 bytes of output data consisting of the following:
SP 5 bytes
RCAS_IN 5 bytes
(see Object table in the Appendix)
4.5.1 Useful data via PROFIBUS
The SIPART PS2 PA positioner can exchange a combination of the
following cyclic useful data with the PROFIBUS:
German
name
English name Abbreviation Direction from
the point of
view of the
SIPART PS2
PA
Length in
bytes
Consisting of
Sollwert Setpoint SP Input 5 Value/Status
readback Readback RB Output 5 Value/Status
Diskrete Pos-
tion
Position dis-
crete
POS_D Output 2 Value/Status
Aktorzustand Checkback CB Output 3 Value
Fernkaskade
Eingang
Remote Ca-
scade Input
RCAS_IN Input 5 Value/Status
Fernkaskade
Ausgang
Remote Ca-
scade Output
RCAS_OUT Output 5 Value/Status
The setpoint consists of a floating–point value (4 bytes) and the
associated status (1 byte, see below)
The readback indicates the position of the valve. The readback con-
sists of a floating–point value (4 bytes) and the associated status (1
byte)
Legend
Setpoint
Readback