Glossary
TIM DNP3
System Manual, 12/2015, C79000-G8976-C253-04
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specific processing functions and change checks assigned to it to minimize the
communication traffic in the WAN. Type-specific processing functions include, for example,
change checks or smoothing with the object type for analog values. The change check is
designed so that a message is generated only when the object data has changed compared
with the last time its value was transferred or when the type-specific processing enables
generation of a message because the object data is "worth" transferring.
Organizational messages are used to execute organizational system functions.
These include, for example:
● General requests
● Time synchronization
● Counted value storage
● Coordinated connection establishment and termination in a dial-up network
● Message indicating station startup and station failure
● Requests for and transmission of subscriber records
→
Configuration
Programming device
Allows access by the STEP 7 configuration software to the SIMATIC stations.
Using PG routing, it is possible to access programmable modules or modules with
diagnostics capability beyond network boundaries from a programming device (PG) or
computer (PC).
→
Polling mode
→
Polling mode
Polling is a type of data transfer in which a master station polls the stations and controls data
exchange in the telecontrol network.
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