Lenze EMF2133IB - Manual (Page 36)

Commissioning
Configuring the host system (master)
6
l
36 EDSMF2133IB EN 5.0
Defining the user data length
The user data length is defined during the initialisation phase (configuration). Up to 12
process data words can be configured (depending on the basic device used).
Optionally you can activate the parameter data channel. If the parameter data channel is
active, it additionally occupies 4 words of the process data inputs and outputs.
ƒ PIW: Process data input word (process data from the controller to the master)
ƒ POW: Process data output word (process data from the master to the controller)
The user data lengths for process input data and process output data are identical. The
selection takes place via identification bytes in the configuration software for the
PROFIBUS system.
Parameter data channel Process data channel
Without /
with Identification / user data length Identification / user data length
Without −
l Identification
– without consistency: 70
hex
... 7B
hex
(112 ... 123)
– with consistency: F0
hex
... FB
hex
(240 ... 251)
l User data length: 1 ... 12 words
(PAW1/PEW1 ... PAW12/PEW12)
With
l Identification
– without consistency: 73
hex
(115)
– with consistency: F3
hex
(243)
l User data length: 4 words
(Word rt 1 ... word 4)
l Identification
– without consistency: 70
hex
... 7B
hex
(112 ... 123)
– with consistency: F0
hex
... FB
hex
(240 ... 251)
l User data length: 1 ... 12 words
(PAW1/PEW1 ... PAW12/PEW12)
General structure of the identification byte
MSB LSB
7 6 5 4 3 2 1 0
User data length
00 1 byte or 1 word
...
15 16 bytes or 16 words
Input/Output
00 Specific identification format
01 Input
10 Output
11 Input and output
Length/Format
0 Byte
1 Word
Consistency
0 Byte or word
1 Total length