Siemens S5-155U System Manual page 77

System Manual
C79000-B8576-C199-03
• • Interface modules (IMs)
If your CC has insufficient slots to insert all the modules required
for your automation task, you can increase the number of modules
with expansion units. The IM modules provide the link between
central controller and expansion units.
• • CP module
CP modules allow point-to-point communication for data
interchange between two PLCs, between one PLC and an external
unit, between one PLC and a SINEC bus system or between one
PLC and the COROS operator control and process monitoring
system. You can use additional CP modules, such as the CP 581,
CP 516, for the acquisition, storage, administration and
preprocessing of large volumes of data.
• • VP module
VP modules enable the local acquisition and displaying
(visualization) of process data of a PLC of the SIMATIC S5.
S5-135U/155U Central Controller
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