Datasets - ABB ACSM1 Firmware Manual

352
The following diagram shows the wiring of the drive-to-drive link.
Termination ON
Drive 1

Datasets

Drive-to-drive communication uses DDCS (Distributed Drives Communication
System) messages and dataset tables for data transfer. Each drive has a dataset
table of 256 datasets, numbered 0...255. Each dataset contains 48 data bits.
By default, datasets 0...15 and 200...255 are reserved for the drive firmware;
datasets 16...199 are available for the user application program.
The contents of the two firmware communication datasets can be configured freely
with pointer parameters and/or application programming with the DriveSPC tool. The
16-bit control word and 32-bit drive-to-drive reference 1 are transmitted from one
dataset on a 500-microsecond (by default) time level; drive-to-drive reference 2 (32
bits) is transmitted from the other dataset on a 2-millisecond (by default) time level.
Depending on the drive control mode, the followers can be configured to use the
drive-to-drive commands and references with the following parameters:
Control data
Start/Stop commands
Speed reference
Torque reference
The communication status of the followers can be supervised by a periodic
supervision message from the master to the individual followers (see parameters
57.04 FOLLOWER MASK 1
Drive-to-drive function blocks can be used in the DriveSPC tool to enable additional
communication methods (such as follower-to-follower messaging) and to modify the
Appendix B – Drive-to-drive link
X5:D2D
JCU
X5:D2D
Termination OFF
JCU
Drive 2
Parameter
10.01 EXT1 START FUNC
10.04 EXT2 START FUNC
24.01 SPEED REF1 SEL
24.02 SPEED REF2 SEL
32.01 TORQ REF1 SEL
32.02 TORQ REF ADD SEL
and 57.05 FOLLOWER MASK
X5:D2D
...
Termination ON
JCU
Drive n
Setting for drive-to-drive
communication
(4) D2D
(5) D2D REF1 or
(6) D2D REF2
(5) D2D REF1 or
(6) D2D REF2
2).