Rockwell Automation FlexPak/WebPak 3000 DC Drive AutoMax Network Communication Board - Manual (Page 26)

4-4 AutoMax Network Communication Option Board
4.5 Tune/Config Update Synchronization Flag
This flag allows the network master application program to track when the drive has
updated tunable and configurable inputs. By toggling the tune/config update
synchronization flag in the master and monitoring the copied value from the drive, the
master’s program can determine when the drive has read in that data. This feature has
no effect on drive operation.
The drive regulator copies the tune/config update synchronization flag bit to its
corresponding loopback bit after it has read in and processed all tunable input
registers. Configurable inputs are only read in by the drive while it is not running. This
will not affect copying the synchronization flag to the loopback bit, since tunable inputs
will still be transferred.
When using WebPak 3000 indirect parameters, use the tune/config update
synchronization flag with the network synchronization flag as described in section 7.1.
To use the synchronization flag, the tune/config input enable bit must be set to 1.
To determine when changes to tunable and configurable data in the drive have been
completed, the master:
1. Modifies the tunable and configurable register data in the appropriate network
registers.
2. Sets the tune/config input enable flag.
3. Toggles the tune/config update synchronization flag.
4. Monitors the tune/config update synchronization flag loopback bit until it equals
the value written in item 3, above.
The tune/config update synchronization flag is defined in the first drop of the drive
network drop connection. Therefore, it can only be used to indicate when data for the
first drop has been read in and processed by the drive.
Alternative Synchronization Methods
The tune/config update synchronization flag applies only to Drop_1. To determine if
the drive received data written to other drops, you must use other methods.
One method is to program a delay after writing to the network master’s memory.
Calculate the delay as needed for the number of drops on the network, adding
600 msec for processing time. See your AutoMax documentation for information on
calculating the delay.
Table 4.1 – Synchronization Flag Register Locations (Alternate and Original Register Maps)
Flag Drop Register Bit
Tune/Config Update Synchronization Flag Loopback
(Master Read) Bit Drop_1 0 7
Tune/Config Update Synchronization Flag (Master
Write) Drop_1 32 15
Tune/Config Input Enable Bit Drop_1 32 14