Profibus-Dp Data Rate; Data Format; Network Status - Control Techniques Profibus-DP User Manual

4.3

Profibus-DP Data Rate

The Unidrive Profibus-DP interface will automatically detect the data
rate of the network, and synchronise to the master controller. Data
rates above 1.5 Mbits/sec are not supported. The Unidrive Profibus-DP
interface does not display the actual network data rate.
bits/sec
1.5M
500K
187.5K
4.4

Data Format

The Unidrive Profibus-DP interface automatically detects the required
data format when the master controller initialises the network. Data
consistency is optional, and is also detected during network
initialisation.
3 Cyclic Words with Mode 1 Non-Cyclic data (with or without
consistency) is the same data format as used on Mentor II and
Commander SE.
parameter with default mappings as shown in the table below.
Cyclic
Channel
IN Word 0
IN Word 1
IN Word 2
IN Word 3
OUT Word 0
OUT Word 1
OUT Word 2
OUT Word 3
4.5

Network Status

Unidrive:
The status of the Profibus-DP network is displayed in #20.50, and can
be viewed on the display on the Unidrive.
#20.50
>0
0 Network is
not running
Issue Number: 3
bits/sec
93.75K
19.2K
9.6K
Each cyclic data word is mapped to a Unidrive
Default Mapping Status
Non-cyclic data word
Status word
Post-ramp speed reference
Motor active current
Non-cyclic data word
Control word
Digital speed reference 1
Torque reference
#20.50
Status Description
Network Indicates the number of network cycles per
healthy second, and the slave is exchanging data with
the master controller.
Indicates that the network is not currently
running.
15