Rockwell Automation GV3000/SE AC Drive AutoMax Network Communication Board, M/N 2AX3000 User Manual

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Programming

4-3

If you only want to transfer control/reference data, leave the tune/config input enable
bit at 0 (off). This forces you to configure the drive through another control source,
such as the front panel keypad/display or CS3000 software, but allows you to control
the drive (run, jog, stop, reset, and the reference) from the network master.

4.3.1 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 by monitoring the copied value from the drive,
the master’s application program can determine when the drive has read in that data.
This feature has no effect on drive operation. The tune/config update synchronization
flag is at Drop_1, register 32, bit 15.

The drive regulator:

Step 1. Copies this bit to the tune/config update synchronization flag loopback bit

(Drop_1, register 0, bit 7).

Step 2. Copies the tune/config update synchronization flag to the tune/config update

synchronization flag loopback bit after it has read in and processed all
tunable and configurable input registers.

To use the synchronization flag, set the tune/config input enable bit (Drop_1, register
32, bit 14) to 1.

Configurable inputs are only read in by the drive while it is not running. This will not
affect the copying of the tune/config update synchronization flag to the tune/config
update synchronization flag loopback bit, since tunable inputs will still be transferred.

To determine when changes to tunable and configurable data in the drive have been
completed, the master performs the following sequence:

Step 1. Modify the tunable and/or configurable register data in the appropriate

network register(s).

Step 2. Set the tune/config input enable flag (Drop_1, register 32, bit 14).

Step 3. Toggle the tune/config update synchronization flag (Drop_1, reg.32, bit 15).

Step 4. Monitor the tune/config update synchronization flag loopback bit (Drop_1,

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.