VIPA System 200V IM Series, Руководство пользователя

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Chapter 8 Ethernet coupler
Manual VIPA System 200V
8-14 HB97E - IM - Rev. 06/29
Principle of the automatic address allocation
To individually call the connected peripheral modules, certain addresses in
the Ethernet coupler have to be assigned to them. For input and output
area, the Ethernet coupler has an address range of each 256Byte.
The address allocation (also called Mapping) happens automatically and
may not be influenced. The mapping may be seen via the website of the
coupler.
After the 256Byte wide I/O image there follows the "alarm information
image" with a size of 520Byte.
At boot-up, the Ethernet coupler assigns automatically addresses for its in-
/output periphery following this rules:
•
All modules are mapped from left (Ethernet coupler) to right in
ascending sequence starting with address 0.
•
It is separated between in- and output area (if a module has in- and
output data, these are stored at different addresses).
•
There is no separation between digital and analog data. The Ethernet
coupler creates cohere areas for in- and output data.
Note!
A description of the in- and output areas that are occupied by a module is
to find in the concerning module description.
Please regard that modules that are occupying more than 1Byte like e.g.
analog modules, are stored starting with an even address. Otherwise
ModbusTCP has problems with word accesses.
The following picture illustrates the automatic address allocation:
Byte 0
.
.
.
Input Area
...
Byte 7
Byte 8
Byte 0
Byte 9
Output Area
.
.
.
...
Byte 7
Byte 9
Byte 8
IM
25
3N
ET
AI
4x
1
2B
it
AO 4x
12B
it
D
I 8x
D
C
24V
DO
8x
DC
24
V
D
IO
8
xDC2
4V
Slot: 0 1 2 3 4 5
DO
8
xDC
24
V
Byte 10
Automatic
addressing
Rules
Sample for
the automatic
address allocation