Inversion Of Inputs; Edge-Triggering - KEB COMBIVERT F5 BASIC Applications Manual

Digital In- and Outputs
6.3.4 Terminal Status
(ru.21)
6.3.5 Digital Filter (di.3)
6.3.6 Inversion of In-
puts (di.4)
6.3.7

Edge-triggering

(di.5)
Control release (ST) can be
set to edge-triggering, but
remains without affect on the
function, since it is a pure
static signal.
© KEB Antriebstechnik, 2002
All rights reserved
The terminal status shows the logic level on the input terminals. It is unimportant,
whether the inputs are internally active or not. If a terminal is controlled, then the
appropriate decimal value according to the table below is output. If several terminals
are active, then the sum of the decimal values is output.
Bit -No. Decimal value Input
0 1
1 2
2 4
3 8
4 16
5 32
6 64
7 128
8 256
9 512
10 1024
11 2048
Example: ST, F and IB are controlled
The digital filter reduces the susceptibility to interferences on the digital inputs. With
di.3 a response time is adjusted. For the duration of the adjusted time the conditions
of all inputs must remain constant, so that a transfer occurs. The transfer takes place
at the positive edge of the scanning grid (see Fig. 6.3.7).
Parameter Setting range
di.3 0...127
Program run time: 1 ms at F5-General; 2 ms at F5-Basic
With parameter di.4 it can be adjusted, whether a signal is 1- or 0-active (inverted).
The parameter is bit-coded, i.e. according to the table below, the appropriate value for
the input is to be entered. If several inputs shall be inverted, then the sum is to be
formed. (Exception: An inversion of the control release remains without function).
As a standard the inverter is controlled with static signals, i.e. an input is set for as
long as a signal is applied. However, practice has shown that a signal may be available
for a limited time only, but the input shall still remain set. In that case the input or
several inputs can be adjusted to edge-triggering. Then a rising edge with a pulse
duration that is longer than the response time of the digital filter is sufficient for switch-
on. Switch-off is effected with the next rising edge.
Bit -No. Decimal value Input
0 1
1 2
2 4
3 8
4 16
5 32
6 64
7 128
8 256
9 512
10 1024
11 2048
Name: Basis
KEB COMBIVERT F5
Functional Description
ST (Prog. input „Control release/Reset")
RST (Prog. input „Reset")
F (Prog. input „Forward")
R (Prog. input „Reverse")
I1 (Prog. input 1)
I2 (Prog. input 2)
I3 (Prog. input 3)
I4 (Prog. input 4)
IA (Internal input A)
IB (Internal input B)
IC (Internal input C)
ID (Internal input D)
indicated value = 1+4+512 = 517
Response time
(adjusted value +1) x program run time
ST (Prog. input „Control release/Reset")
RST (Prog. input „Reset")
F (Prog. input „Forward")
R (Prog. input „Reverse")
I1 (Prog. input 1)
I2 (Prog. input 2)
I3 (Prog. input 3)
I4 (Prog. input 4)
IA (Internal input A)
IB (Internal input B)
IC (Internal input C)
ID (Internal input D)
Date
16.04.02
Terminal
X2A.16
X2A.17
X2A.14
X2A.15
X2A.10
X2A.11
X2A.12
X2A.13
none
none
none
none
Terminal
X2A.16
X2A.17
X2A.14
X2A.15
X2A.10
X2A.11
X2A.12
X2A.13
none
none
none
none
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