ABB A43

Communication with Modbus
A43/A44 136 2CMC48001M0201
User Manual Revision: C
9.8 Event logs
Mapping table
Header and data
block
Note – Before you can use the information in this chapter you must be familiar with
and understand the information and the concepts described in “Historical Data” on
page - 114.
The following table shows an overview of the mapping table:
Log type
Details
Start Reg (Hex)
Size
System log
Header
6500
16
System log
Data block
6510
105
Event log
Header
65B0
16
Event log
Data block
65C0
105
Net quality log
Header
6710
16
Net quality log
Data block
6720
105
There is one pair of header and data block for each log type, located in the
registers listed in the mapping table above. In the tables showing the structure
of the header and data block below the register numbers are valid for the
System log. However the headers and data blocks for all log types share the
same structure, so the tables are applicable for all log types if the register
numbers are exchanged to correct values.
Structure of
the header
The following table describes the header:
Function
Start
Size
Description
Read/write
Reg
(Hex)
Get next block
6500
1
Write value 1 to this register to load
R/W
the next block of log entries
Entry number
6501
1
Write to this register to choose an
R/W
entry number to start reading from
Date/Time
6504
3
Write to this register to choose a
R/W
date/time to start reading from
Direction
6507
1
Write to this register to choose the
R/W
direction of reading