Siemens SITOP PSU8600 User Manual

Engineering and remote access
7.6 Cyclic and acyclic data
Power supply system SITOP PSU8600
Manual, 09.2018, A5E36758446-5-76
225
7.6
Cyclic and acyclic data
The data communicated between the power supply system and the PROFINET IO-Controller
can be viewed in the SIMATIC STEP 7 or SIMATIC STEP 7 in the TIA Portal. Here, a
distinction is made between cyclic data (input/output data) and acyclic data (reading/writing
data sets).
Cyclic data (input/output data)
The SITOP PSU8600, the expansion modules, the buffer modules and the UPS modules
send data - in cyclic intervals (1 ms to 512 ms; default setting is 2 ms) - about the actual
operating states to the PROFINET IO-Controller. Further, value changes from the
PROFINET IO-Controller can be transferred to the SITOP PSU8600 in cyclic intervals (1 ms
to 512 ms; default setting is 2 ms). You can find additional information on this topic in
Chapter "Input data (Page 225)" and in Chapter "Output data (Page 230)".
Actual values
from the device are updated via the cyclic input data of the control on the
average within 10 ms:
Setpoints
, which are transferred via the cyclic output data of the control to the device, are
active within 25 ms.
Acyclic data (reading/writing data sets)
Reading and writing data sets (maximum size: 4 kB) are sent in acyclic intervals from the
SITOP PSU8600, the expansion modules and the buffer modules to the PROFINET IO-
Controller or from the PROFINET IO-Controller to the power supply system. Additional
information is provided in Chapter "Reading and writing data sets (Page 238)".
Note
In order to guarantee the op
timum performance regarding the data transfer rate, the number
of simultaneously used communication interfaces (PROFINET, OPC UA, Web) should be
kept as low as possible.
7.6.1
Input and output data
7.6.1.1
Input data
An overview of the input data, which is sent cyclically from the SITOP PSU8600, the
expansion modules and the buffer modules to the PROFINET IO controller is shown in the
following tables.
Additional information about the individual operating states is provided in the corresponding
subchapters.

Siemens SITOP PSU8600 Specifications

General

Brand	Siemens
Model	SITOP PSU8600
Category	Power Supply
Language	English