IEC08000304.vsd
IEC08000304 V1 EN
Figure 37:
ACT: Warning message by signal mismatch for a connection
5.1.7
Hardware channels
Hardware channels can only be connected to a function block input or output. A
hardware connection can be established in ACT or SMT. When a hardware channel
is connected a graphical symbol appears in ACT, see
also represented in SMT with a cross mark. Hardware channels are always visible
in SMT.
Supported hardware channels are:
•
Binary input channels
•
Binary output channels
•
Analog input channels
A hardware input channel can be used as often as it is needed. A hardware binary
output channel is taken from the list of available channels when a new channel is
requested. That prevents for using a hardware binary output channel twice. As an
example, see
.
Section 5
1MRK 511 261-UEN -
Protection and control engineering
56
650 series
Engineering Manual