Technical Manual PD4-E-M (EtherCAT)
7 Special functions
•
h
:06
h
(Input Range Select): This can be used to switch inputs – that are equipped with this
function – from the switching threshold of 5 V (bit is "0") to the switching threshold of 24 V (bit is
"1"). Bit 0 corresponds to input 1 here, bit 1 to input 2, etc.
•
h
:07
h
(Differential Select): With the inputs, this subindex switches between "single-ended
input" (value "0" in the subindex) and "differential input" (value "1" in the subindex) once for all
inputs.
•
h
(Digital Inputs): This object contains a summary of the inputs and the special functions.
Computation of the inputs
Computation of the input signal using the example of input 1:
The value at bit 0 of object 60FD
h
is interpreted by the firmware as negative limit switch; the result of
the complete computation is stored in bit 16.
60FDh
Range in which the firmware expects
special entries (reference and limit switches)
Range of the calculated
Bits
Bit0
Bit15
Bit16
Bit31
Default setting
Value of the
input pin 1
Bit in
3240h:4
1
: Value = 1
0
: Value = 0
Bit in
3240h:2
1
: invert logic
0
: do not invert logic
Alternative
Bit in
3240h:1
0
: switch pin off
1
: do not switch pin off
Bit in
3240h:2
1
: invert logic
0
: do not invert logic
Bit in
3240h:3
1
: value forced
0
: value not forced
Input Routing
Principle
To perform the assignment of the inputs more flexibly, there is a mode called Input Routing Mode. This
assigns a signal of a source to a bit in object 60FD
.
Signal source
Routing
Object 60FD
h
Activation
This mode is activated by setting object 3240
:08
h
(Routing Enable) to 1.
Note
Entries 3240
h
:01
h
h
then have no function until Input Routing is again switched off.
Version: 1.0.1 / FIR-v1748
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