User manual

Using SIMATIC PCS 7 OSx @aGlance 1-5
SIMATIC PCS 7 OSx 4.1.1 @aGlance
With the components listed above, SIMATIC PCS 7 OSx @aGlance supports
the following types of information exchange.
 Hot link — automatically retrieves tag data as that data changes.
 Cold link — reads tag data on demand.
 History retrieval — reads trend data on demand.
 Writeoperation—allowsyoutowritenewvaluestoselectedtags.
What Are the
Capabilities?