1

At a time when system operation can be interrupted, turn off power to the ASP890300 and other supplies in the affected drop. Ensure the ASP890300 front panel power switches are in the OFF position.

2

Remove module from the backplane. Note the position of the MODE SELECT switch. The switch should be returned to that position when the reflash sequence has been completed. Set the MODE SELECT switch to position 7 (RTU mode) or 8 (ASCII mode)

3

Connect a communication cable from the panel software PC serial port to the ASP890300 ASCII Port 1 ONLY. Port 2 is not supported.

4

The module may be reinserted into the system backplane and powered. It may also be flashed on the bench, e.g. plugged into a spare non-system backplane and powered on.

5

In panel software, display the exec download menu.

6

Use the Direct MB Device selection. The address used should be that selected by the ASP890300 address rotary switches. If connected to a Modbus network, insure there are no address conflicts. Set the communication parameters to those listed above per the mode selection, either RTU or ASCII, and perform the normal executive software loading procedure.

7

After the transfer is complete, the panel software will indicate a timeout error, and there will be no further communication to the P890. Look at the ASP890300 LEDs for confirmation that the flash sequence has succeeded. When an exec download has successfully completed, the front panel LEDs will repeatedly blink in the same sequence from top to bottom as that following a power up. If the operation fails, the Comm Active LED will continue to flash as noted in Step 4.

8

Power down the ASP890300.

9

Unplug the programming cable from the ASCII Port. Remove the module from its backplane. Set the MODE SELECT switch back to the correct position (noted in Step 2).

10

Insert the ASP890300 into the rack. Turn on power to it and other supplies as required. The ASP890300 should operate normally.