Remotely Acknowledge Single Alarm Messages; Remotely Clearing The Event History - Woodward easYgen-2000 Series User Manual

Modbus Applications > Changing Parameter Settings > Remotely Clearing The Even...
6.6.2.5

Remotely Acknowledge Single Alarm Messages

Example
Fig. 235: Write register - acknowledge
alarm message
6.6.2.6

Remotely Clearing The Event History

Example
37535B
Single alarm messages can be acknowledged remotely through
the Modbus by sending the respective parameter ID of the alarm to
be acknowledged on parameter 522. The required procedure is
detailed in the following steps.
ID Parameter
522 Reset alarm list
The parameter ID of the alarm to be acknowledged must be written
to object 220A (hex), i.e. parameter 522.
A "Mains undervoltage 1" alarm (ID 3012) shall be acknowledged
Ä Chapter 9.5.4.2 "Alarm Messages" on page 593 ).
(refer to
Modbus address = 40000 + (Par. ID + 1) = 40523
n
Modbus length = 1 (UNSIGNED 16)
n
Fig. 234: ModScan32 at address 40523
1. Use the "display options" to set the format to decimal view.
2. Double-click the address to issue a Write Register com‐
mand.
ð Fig. 235 shows how the parameter ID of the alarm to be
acknowledged is written using the ModScan32 Software.
The event history can be cleared remotely through the Modbus.
The required procedure is detailed in the following steps.
ID Parameter
1706 Clear eventlog
In order to clear the event history, bit 0 of object 26AA (hex), i.e.
parameter 1706 Ä p.
The event history shall be cleared.
easYgen-2200/2500 | Genset Control
Setting range
0 to 65535
Setting range
Yes / No
92, must be enabled.
Application
Data type
UNSIGNED 16
Data type
UNSIGNED 16
447