ABB A43 User Manual page 146

Communication with Modbus
Note –
the number of quantities used is already known.
Note –
Quantity registers in step 2. The Quantity number register holds the current quantity
number, starting from 1 after reading the Number of quantities register. It is
incremented every time the Quantity registers are read.
Level
configuration
The following table describes the group of registers for configuring the
registers number of levels for all quantities stored in demand:
Function
Level quantity
Number of levels 8C38
Write level Follow the steps in the table below to configure the number of levels for each
of the quantities stored in demand:
configuration
Step
1
2
3
Note –
has already been configured by performing the steps under Write quantity configura-
tion. Writing an OBIS code in step 1 above does NOT add it to the set of quantities to
store.
Follow the steps in the table below to read the current configuration of levels
Read level
for all quantities stored in demand:
configuration
Step
1
2
3
Note –
demand is already known. Otherwise the steps under Read quantity configuration
must be performed first to find these.
A43/A44
User Manual
Step 1 initiates the readout procedure and can NOT be left out, even if
The Quantity number register can optionally be read together with the
Start Size
Reg
(Hex)
8C35 3
1
Action
Write the OBIS code for the first quantity to the Level quantity registers.
Write the number of levels to use for the quantity chosen in step 1 to the
Number of levels register. Allowed values are 1-3.
Repeat step 1 and 2 for all quantities used in demand.
It is assumed that the set of quantities, i.e. the OBIS codes, to store in demand
Action
Write the OBIS code for the first quantity to the Level quantity registers.
Read the number of levels used for the quantity chosen in step 1 from the
Number of levels register.
Repeat step 1 and 2 for all quantities used in demand.
It is assumed that the set of quantities, i.e. the OBIS codes, stored in
146
Description
OBIS code for the quantity
Number of levels to store for the quantity R/W
Read/
write
R/W
2CMC48001M0201
Revision: C