Solartron Mobrey 3595 4C, User Manual

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IMP Commands 3595 4C User Manual Part Two
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35952350 (CH01/AA)
FB
( F lush B uffers)
FB
Function: Flushes the historical results (FIFO buffer) and returns the FIFO buffer to the ‘free buffer list’.
FB is a ‘one-shot’ command and has no persistent effect. For further flushing, another FB
command must be sent.
SD
( S ave D atabase)
and RD
( R estore D atabase)
SD RD
Function: The SD and RD commands provide for a quick set-up.
The SD command saves the database of a previously configured IMP into a Flash PROM .
Later, the RD command can be used to load the current contents of the Flash PROM into the
same database.
When the database is restored, two things happen:
1.
The watchdogs are disabled and
2.
If the channel mode is 80x, the output is set accordingly.
(Refer to Appendix A for details of the database format.)
Compared with the PC saving and restoring the IMP database over S-Net, the above method
is more convenient, but less flexible.
Response: Stream 3. Single character ‘H’ ( SD command only). This response confirms that the
database has been written.
Note: Before storing the database in the Flash PROM, the SD command generates an internal HA
(halt) command. This does not change the state of the COntinuous Scan Parameter.
While the database is being restored, there is no communication with the IMP and S-Net.
This causes polling errors, which stop when storage is complete.
It can take up to three seconds for the IMP database to be restored. Therefore after sending
the SD command, any software application should wait three seconds, then clear the error
flags from the 3595 4C Interface card, and then read Stream 3 for an ‘H’ character. Once this
is received, the IMP is ready to resume normal operations.