Siemens SIMATIC 505 - Identifying the Data Being Transferred

Advanced Function Programming
3-13
SIMATIC 505–2556 Installation and Operation Guide
3. The data identification outputs Y19 – Y17 are set according to the data
being transferred. These are decoded by the module in order to
distinguish the type of data being loaded (see Figure 3-9).
MWIR
A
V300
B Y17
N=3
C2
1615
Specified word LSB
14
17
19
18
C1 V300=2
Figure 3-9 Identifying the Data Being T ransferred
4. Y32 Data_Ready is energized to transfer the word data into the module
(see Figure 3-10).
Y32
Data_Ready
C2
Figure 3-10 The Data_Ready Bit