ABB COM600 series, User Configuration Manual

Page: 17 / 66

Adding logical nodes for a sequence 3.4.
At a minimum, each added sequence logical device should have the predefined SEQG-
GIO1 and STEPGGIO1 logical nodes with data objects. The SEQGGIO logical node
has data objects related to the entire sequence functionality, whereas the STEPGGIO
logical node has data objects for a step in the sequence. The predefined logical nodes
and data attributes for a sequence logical device are described in Table 3.4-1.
The description parameter of the data objects in the logical
devices is used in event reporting for sequence execution. To
be able to identify the step number involved, edit the
description parameter of the “St” data object for a STEPGGIO
logical node.
Additional STEPGGIO logical nodes should be added for a sequence with multiple steps.
Table 3.4-1 Predefined logical nodes and data objects for a sequence logical device
Data object descrip-
tion Data object type Data object name Logical node name
State INS St SEQGGIO1
Control SPC Str
Execution mode SPC Auto
Manual mode acknow-
ledgement SPC StepExec
On step error SPC OnStepErr
Step (number) state INS St STEPGGIO1
To add additional logical node objects:
1.
Right-click the sequence logical device and select New > Communication >
Sequence Step LN.
SAB600_SC_PLC_LN.png
Figure 3.4-1 Adding a logical node for a sequence logical device
2. Edit the description parameter for the "St" data object in the added STEPGGIO1
logical node for additional clarity.
17
COM600 series 5.1 1MRS755001
Sequence Control Configuration Manual