3 addressing with slot and index, Addressing with slot and index, Networking via profibus−dp – Lenze EPM−T9XX Modular system User Manual
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Transmitting parameter data
Addressing with slot and index
Networking via PROFIBUS−DP
10.5
10.5.3
L
10.5−3
EDSPM−TXXX−9.0−11/2009
10.5.3
Addressing with slot and index
)
Note!
Prerequisite for addressing data via slot and index:
l
Master and slave have to support the communication protocol
PROFIBUS−DP−V1.
– The connection can be established via a class 1 master
(DPM 1) or class 2 masters (DPM 2).
l
The function blocks SFB 52 (read) and SFB 53 (write) must be
integrated in the slaves PROFIBUS Gateway and PROFIBUS
GatewayECO.
– For further information, refer to the documentation on SFB 52
and SFB 53 (Siemens).
PROFIBUS interprets a slave as a logic entity with a physical modular structure.
Module
PROFIBUS
Gateway
8×digital
output 1A
16×digital
output 1A
8×digital
input
4×analog
input
...
Slot number
0
1
2
3
4
...
Index
0 ... 255
0 ... 255
0 ... 255
0 ... 255
0 ... 255
...
Request
...
1 byte
(slot number 1)
2 bytes
(slot number 2)
...
Response
...
1 byte
(slot number 3)
8 bytes
(slot number 4)
...
Fig. 10.5−3
Example of slave configuration
Description