Cyclic Transmission - Toshiba nv Series User Manual

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