Toshiba nv Series - Cyclic Transmission

Unified Controller nv series type1 light PROFIBUS-DP Module PF611A / PF612A User’s Manual
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3.2 Cyclic transmission
The Master module(PF611A) reads cyclically the input information from the slaves and writes
cyclically the output information into the slave.
The I/O area of the PF611A to the slaves are shown in the following table.
Communication with slaves is
possible by the controller reading from the corresponding
address of the master or slave and writing to it.
Table 3-1 PF611A I/O area
Address
Name
Function
100h-1FFh
Write data (256 words)
Output area to slave
200h-2FFh
Read data (256 words)
Input area from slave
The I/O area of the slave module (PF612A) to the master is shown in the following table.
Communication with slaves is
possible by the controller reading from the corresponding
address of the master or slave and writing to it.
Table 3-2 PF612A I/O area
Address
Name
Function
100h-17Ah
Write data (122 words)
Output area to master
200h-27Ah
Read data (122 words)
Input area from master
A conceptual diagram of cyclic transmission is shown below.
The I/O address of the slave is set from the configurator.
Output
Area
Input
Area
Output module
Slave
Master
100h
200h
0h
2h
4h
0h
2h
4h
I/O Output
I/O Output
I/O Output
I/O Input
I/O Input
I/O Input
Output
Area
Controller
Input
Area
PROFIBUS-DP
Output module
Output module
Input module
Input module
Input module
Figure 3-1 Cyclic transmission (Combination of PF611A and I/O)