4
Project Planning and Startup
Configuring a PROFIBUS-DP master
Manual – MOVI-PLC
®
basic DHP11B.. controller
45
The following figure shows the configuration data structure defined in IEC 61158. This
configuration data is transmitted to the MOVI-PLC
®
basic
DHP11B.. controller during
the initial start of the DP master.
Data consistency
Consistent data is data that always has to be transmitted between the higher-level
controller and the MOVI-PLC
®
basic
DHP11B.. controller as one block and must never
be transmitted separately.
Data consistency is very important when transmitting position values or complete posi-
tioning tasks. Data consistency is particularly important, as inconsistent transmission
may lead to data originating from different program cycles of the higher-level controller,
which would lead to undefined values being transmitted to the MOVI-PLC
®
basic
DHP11B.. controller.
For PROFIBUS-DP, data communication between the higher-level controller and the
MOVI-PLC
®
basic
DHP11B.. controller is carried out with the setting "Data integrity over
entire length".
7 / MSB
6
5
4
3
2
1
0 / LSB
Data length
0000 = 1 byte/word
1111 = 16 bytes/words
Input / Output
00 = Special identifier formats
01 = Input
10 = Output
11 = Input / Output
Format
0 = Byte structure
1 = Word structure
Integrity over
0 = Byte or word
1 = Entire length
Note:
The MOVI-PLC
®
basic
DHP11B.. controller does not support the "Special identified
formats" coding! Only use the "Integrity over entire length" setting for data transmission.
0
0
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