72 Chapter 7 - Parameters Description
User Manual
Enabling Virtual I/O
Through a virtual setting via serial line or fieldbus, it is possible to use all the functions available on the digital inputs and
perform a direct control of the digital and analog outputs.
The setting can be carried out in such configurations, where the digital commands are a mix of virtual and terminals and
the outputs are a mix of virtual and drive function.
The virtual assignment can be performed through the parameters
H.000 H.022
in the
HIDDEN
menu (for further
information please see this chapter).
Below are the reported the drawings describing the combination between the byte of the virtual I/Os and the drive
terminals, with the relative decoder mask.
The switch between the virtual commands and the terminal ones and between the virtual output or the drive
functions, is determined by programmable mask
I.400 I.450.
These parameters have to be managed bitwise. At each bit corresponds a switch, as follows.
Bit value
Inputs
Outputs
0
Terminal
Drive function
1
Virtual
Virtual control
The formula below describes the result of the virtual I/Os setting:
[Input/Output AND (NOT Mask)] OR (Virtual AND Mask)
VIRTUAL DIGITAL INPUTS CONFIGURATION
DI
8
DI
6
DI
4
DI
2
DI
7
DI
5
DI
3
DI
1
VI
8
VI
6
VI
4
VI
2
VI
7
VI
5
VI
3
VI
1
Terminal digital inputs
Virtual digital inputs
H.000
d.102
d.101
I.400
Mask
To internal drive
digital commands
I.000 … I.007
Mask bits = 0
DIxx active
Þ
Mask bits = 1
VIxx active
Þ
0
1
0
1 0
1
Bit 7...............................Bit 1
Bit 0
Figure 7.4.5: Virtual digital inputs configuration
