Chapter 6 Deployment of the CPU 821xDP
CPU ADAM 821x
6-12
ADAM 8000 Manual CPU 821x – Rev 1.1
DP slave parameters
With an "intelligent slave", the Profibus section writes its data areas into the
memory area of the CPU 821xDP. The assignment of the areas happens
via the properties of the CPU 821xDP.
The input resp. output areas have to be supported with an according PLC
program.
Attention!
The length values for in- and output area have to be identical to the byte
values of the master configuration. Otherwise there is no Profibus
communication possible and the master notes a slave failure!
Slave System
PB-
Addr.:1
Slot Module
0 CPU 821xDP
1
. Expansion
. modules
.
3
PB-
Addr.:3
DP200V
CPU21x
Slot Module
0 Output (Bytes)
1 Input (Bytes)
Master system
PB-
Addr.:2
As soon as you set a length value to 0, the concerning data does not
occupy any memory space in the CPU.
By assigning 255 (memory limit) at the parameters PRN, DIAG and STAT
you may also release memory space in the CPU.
Outline
Release CPU
areas
