Siemens SIMATIC Distributed I/O System DP/ASi Link Manual page 64

Configuring the DP/ASi Link
Parameterize By choosing Parameterize..., you can influence the start-up characteristics
of the DP/ASi link. You can differentiate between "actual is equal to setpoint
configuration" and "actual is less than or equal to setpoint configuration".
Actual By actual configuration we mean the actual configuration of the ASi as de-
configuration tected by the DP/ASi link.
Setpoint
By setpoint configuration we mean the configured configuration of the ASi
configuration as stored in the DP master.
Actual equal to "Actual is equal to setpoint configuration" means that the DP/ASi link starts
setpoint
up only when the actual configuration is identical with the setpoint configu-
configuration ration. If there is a discrepancy between the actual and setpoint configura-
tions, the DP/ASi link requests a new parameterization message.
Actual less than or
"Actual is less than or equal to setpoint configuration" means that the DP/
equal to setpoint ASi link compares the actual configuration with the setpoint configuration. If
configuration
the DP/ASi link establishes a discrepancy, it reacts in two different ways:
If the setpoint and actual configurations are identical, the DP/ASi link starts
without issuing an error message. If the actual and setpoint configurations are
not identical, a diagnosis is generated (refer to Chapter 8).
Hex... By pressing the Hex... button, you can view the parameterization table of the
DP/ASi link. The structure of this table is described in Appendix C.
Re-configuring
You can later add more ASi slaves to the DP/ASi link or remove them later.
To do this, select the corresponding DP/ASi link from the master system con-
cerned.
5-4
If the DP/ASi link detects unconfigured ASi slaves, it behaves as for "ac-
tual is equal to setpoint configuration", that is, the DP/ASi link does not
start up.
If a comparison of the actual and setpoint configurations determines that
configured ASi slaves are missing, the non-existent ASi slaves are repor-
ted to have failed in the diagnosis. Data exchange is initiated, however.
Distributed I/O System DP/ASi Link
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