MOVIDRIVE
®
PROFIBUS DFP11A
17
The PROFIBUS-DP
Interface
3
The drive inverter interprets the length of the DP configuration passed to it as shown in Table 2.
Two different process data configurations for PROFIBUS-DP are described below.
3.1.2 Configuring for 1 (2, 3) Process Data Word(s) (1 PD (2 PD, 3 PD))
Control of the MOVIDRIVE
®
drive inverter using 1 (2, 3) process data word(s) requires, for exam-
ple, that the Cfg_Data identifier byte is coded as shown in Fig. 12. This code must be sent to the
drive inverter by the DP master when PROFIBUS-DP is started so that the DP master and DP slave
can exchange a process data word.
01224AEN
Fig. 12: Configuration data example for setting 1 (2, 3) input/output word(s) (1 PD (2 PD, 3 PD))
Fig. 13 shows the communication between the higher level automation unit (DP master) and the
MOVIDRIVE
®
drive inverter via 1 (2, 3) process data word(s).
01225AEN
Fig. 13: Control of the drive inverter via 1 (2, 3) process data word(s)
1
1
1
1
X
X
X
X
MSB
LSB
Cfg_Data identifier byte
Data length: 0000 = 1 word
0001 = 2 words
0002 = 3 words
Input/output
Word structure
Consistency over complete length
= F0
= 240
(1 word)
hex
dez
= F1
= 241
(2 words)
hex
dez
= F2
= 242
(3 words)
hex
dez
PD 1
PD 1
PD 2
PD 2
PD 3
PD 3
E
Q
PD 1
PD 1
PD 2
PD 2
PD1
PD1