ABB A43, User Manual

Page: 149 / 295

Communication with Modbus
2CMC48001M0201
149 A43/A44
Revision: C User Manual
Read channel
configuration
Step Action
2 Write the OBIS code for the quantity to store in the chosen channel to the
Quantity registers.
3 Write the desired storing interval to the Interval registers. The interval is
expressed in minutes.
4 Write the desired maximum number of snapshots to the Max number of
snapshots registers.
5 Repeat steps 1 to 4 for all channels.
Follow the steps in the table below to read the current configuration of the
load profile channels:
Step Action
1 Choose the channel to read configuration for by writing a number to the
Channel number register. Allowed values are 1-8.
2 Read from the Quantity registers to get the OBIS code for the quantity
configured in the chosen channel.
3 Read from the Interval registers to get the storing interval for the chosen
channel. The interval is expressed in minutes.
4 Read from the Max number of snapshots registers to get the maximum number
of snapshots that can be stored in the chosen channel.
5 Repeat steps 1 to 4 for all channels.
9.10.4 Alarms
General
Alarm configuration defines the set of quantities to monitor. It is also defines the
threshold values, delays and actions to perform for each alarm. Each alarm is
configured individually.
Alarm configuration registers
The following table describes the group of registers for configuring the
alarm parameters:
Function Start Size Description Read/
Reg write
(Hex)
Alarm number 8C60 1 The number (identifier) for the alarm to R/W
configure
Quantity 8C61 3 The quantity to monitor R/W
Thresholds 8C64 8 ON and OFF thresholds to used to R/W
decide when the alarm is active