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Chapter 4: Configuring the SRU Table
(A197_SRU)
The SRU table contains the relevant configuration information for SRU polling and control.
Each record in the SRU table defines the parameters for a single SRU.
Table 5 SRU Configuration Table Parameters
Name Range Description
SRU Address 0 .. 255 This parameter defines the communication address for this SRU. Also referred
to as Destination Station Number (DST).
Station Address 0 .. 255 This parameter defines the communication address for the DCA. Also referred
to as Source Station Number (SRC).
Re-Init Interval -1 (disabled)
0 .. 1000000000
This parameter defines the frequency (in milliseconds) at which
communication with the SRU will be attempted when it is off-line.
A typical Re-Init interval is 60000 milliseconds.
Time Sync
Interval
-1 (disabled)
0 .. 1000000000
This parameter defines the frequency (in milliseconds) at which the Time
Synchronization sequence will be executed.
A typical Time Sync interval is 3600000 milliseconds (1 hour).
Data Read
Interval
-1 (disabled)
0 .. 1000000000
This parameter defines the frequency (in milliseconds) at which Data Read
sequence will be executed. This sequence is used to retrieve all the digital
input and analog input data from the SRU as configured in the A197_PAR
Partition Table.
A typical scan interval is 60000 milliseconds.
Polling Interval -1 (disabled)
0 .. 1000000000
This parameter defines the frequency (in milliseconds) at which the SRU will
be polled. If 0 is used, data will be retrieved as often as possible. If -1 is used,
the scan is disabled. If the COM record for this SRU record is set to Full-
Duplex mode, this sequence is disabled.
A typical scan interval is 60000 milliseconds.