Technical data

Glossary
Software
454 System Manual, 07/2009, C79000-G8976-C222-07
possible. It is possible to have several node stations in a SINAUT network; in other words
the data traffic between stations and master station can involve two or more node stations.
Node station TIM
WAN interface of a TIM in a node station set to the "node station" function.
If the TIM used in a node station has two WAN interfaces, the "station", "node station" and
"master station" functions can be used in any combination on one TIM.
OP
Operator panel, HMI device
OPC
(OLE for Process Control)
OPC includes a series of specifications for data exchange in automation engineering
between controllers, alarm transmitters etc. and control systems.
Organizational message
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
Parameter assignment
A device is assigned the parameters it requires for starting up when it is supplied with data.
Permanent call
A permanent call does not interrupt the normal polling cycle; it is always executed alternating
with the standard poll from the normal polling cycle.
PG / programming device
A PG is a personal computer designed specifically for use in industry. A PG is fully equipped
for programming SIMATIC automation systems.