Siemens 505-2557 Manual Do Utilizador
Advanced Function Programming
3-9
SIMATIC 505–2557 Installation and Operation Guide
Before any transfers are made to the module, the relay ladder program
should examine the state of this input. (Only when the input is true), can
the loading operation begin.
should examine the state of this input. (Only when the input is true), can
the loading operation begin.
Figure 3-4
Discrete Handshake Inputs