Firmware
≤
11.00 - DMS 8.0 EN - 10/2011
L
257
8400 StateLine C | Reference manual
I/O terminals
Digital terminals
6.1.1
Change function assignment
The configuration of the internal processing function of the digital input terminals DI1 and
DI2 can be changed in
C00115
if required. That way, these input terminals can alternatively
be used as frequency/counter inputs to implement the following functions:
Detection of the input frequency
Detection and processing of two unipolar input frequencies to one bipolar frequency
Counting of input pulses
Evaluation of the speed feedback (HTL encoder) for the motor control (speed-controlled
operation)
You can find detailed information on the respective function assignment in the following
subchapters:
Using DI1 and DI2 as digital inputs
(
258)
Using DI1 and DI2 as frequency inputs
(
259)
Using DI1 as a counter input
(
263)
C00115/1: Function assignment of DI1 and DI2
Function assignment
DI1
DI2
0 DI1=In1 / DI2=In2
Digital input
Digital input
1 DI1=FreqIn12 / DI2=In2
Frequency input
Digital input
2 DI1&DI2=FreqIn (2-track)
Frequency input (2-track)
3 ( DI1/DI2=+- ) = FreqIn12
Frequency input
(speed)
Frequency input
(direction)
4 DI1=CountIn1 / DI2=In2
Count input
Digital input
Note!
• In the Lenze setting of
C00115
, the digital input terminals DI1 and DI2 are
configured as "normal" digital inputs.
• Generally, the digital input terminals DI3 ... DI4 are configured as "normal"
digital inputs.
• Very high pulse frequencies can be measured at the input terminals DI1/DI2
if these have been configured as frequency or counter inputs in
C00115
.
Scanning is then carried out within a few
μ
s instead of the otherwise usual
scanning rate of 1 kHz (1 ms).
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