18
MOVIDRIVE
®
PROFIBUS DFP11A
3
The PROFIBUS-DP
Interface
3.1.3 Configuring for 1 PD (2 PD, 3 PD) + Parameter Channel
Control of the MOVIDRIVE
®
drive inverter using 1 (2, 3) process data word(s) and an additional
parameter channel requires two identifier bytes to be defined. Identifier byte 1 contains the code
for the parameter channel, identifier byte 2 contains the code for 1 (2, 3) process data word(s). Fig.
14 shows how this identifier byte for the parameter channel is coded. The identifier byte for the
process data words is shown in Fig. 12. These codes must be sent to the drive inverter by the DP
master when PROFIBUS-DP is started so that the DP master and the DP slave can exchange the
process data words as well as the parameter channel.
01226AEN
Fig. 14: Configuration example for parameter channel
Fig. 15 shows the communication between the higher level automation unit (DP master) and the
MOVIDRIVE
®
drive inverter via 1 (2, 3) process data word(s) and the parameter channel for reading
and writing of drive parameters.
01227AEN
Fig. 15: Communication with 1 (2, 3) process data word(s) and parameter channel
1
1
1
1
0
0
1
1
MSB
LSB
Cfg_Data identifier byte for parameter channel
Data length:
4 words
Input/output
Word structure
Consistency over complete length
= F3
= 243
hex
dec
E
Q
PD 1
PD 1
PD 2
PD 2
PD 3
PD 3
PD 1
PD 1
PD 2
PD 2
PD 1
PD 1
Parameter channel
Parameter channel
Parameter channel
Parameter channel
Parameter channel
Parameter channel