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4.2 Data Mapping in CANopen Network
Data mapping in DVP-12SA
DVP-08ST, connected on the right hand side of DVP-12SA, offers 8 channels of digital input and 1 byte of input
data. In this example, we will use X0 and X1 on DVP-08ST to RUN/STOP ASD-B and select speed. Y0 is for the
output signal of ASD-B operational status. See the table below for more information.
Channel
X0
Controlling RUN/STOP of ASD-B
Selecting the speed of ASD-B:
X2 = 0, X1 = 1, selecting SP1
X1, X2
X1 = 1, X2 = 0, selecting SP2
X1 = 1, X2 = 1, selecting SP3
Operational status of ASD-B:
Y0
On: RUN
Off: STOP
Supposed IFD9503 is connected to DVP-12SA and exchanging data with DVPCOPM-SL master, the default length
of input data is 8 bytes and output data is 8 bytes. D256 in DVP-12SA is the start device for input data, and D0 is
the start device for output data. To realize the control function of X0, X1 and X2, we place the statuses of X0 ~ X2
to bit 0 ~ 2 of D256. That is, when X0 = On, bit 0 of D256 will become 1. When X1 = On, bit 1 of D256 will become 1.
In this way, we can realize the control of RUN, STOP and speed of ASD-B by the changes in D256 through
WPLSoft. The status word in ASD-B will then be sent to D0. That is, when bit 0 of D0 becomes 1, there will be
signals at Y0.
I/O data area for DVPCOPM-SL master:
D register
D6032
D6033
D6034
D6035
...
D6282
D6283
D6284
D6285
...
DVP-PLC Operation Manual
CANopen Communication Module DVPCOPM-SL
Function
15 14 13 12 11 10 9
D256
8
7
6
5
4 3u,3 2
X2 X1
D257
D258
D259
D0
D1
D2
D3
1
0
X0
Y0
13
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