schmersal PROTECT-PSC, Инструкция по эксплуатации

Страница: 171 / 267

Programming / parameter assignment
6
Instruction Manual PROTECT-PSC
V 2.6R01 / 04.19
6-37
TMR/TMRH
This timer passes on a TRUE to its input after expiry of the delay time at its output
and maintains this state until its input resumes the FALSE state.
TMRS/TMRSH
This timer passes on a TRUE at its input to its output after expiry of the delay time
and maintains this state (independent of the state of the input) until its R-input as-
sumes the HIGH state. Due to its self-holding function this timer works like an inte-
grator. Therefore, it also counts pulsed input signals or adds the individual pulse
lengths together until the preset total time is reached.
In the case of short pulse times considerable differences may arise between the
actual and the measured added time due to the increment of 15ms.
6.10.6 Counters
Counters may only be used in PN program. They are selected by assigning an ad-
dress with the prefix
‘C’ (000…1FF). The adjustable range is between 1 and
65535. A counter passes on a TRUE to its input if the number of counter pulses ex-
ists.
F
F
i
i
g
g
u
u
r
r
e
e
6
6
-
-
2
2
9
9
L
L
a
a
d
d
d
d
e
e
r
r
d
d
i
i
a
a
g
g
r
r
a
a
m
m
s
s
y
y
m
m
b
b
o
o
l
l
/
/
c
c
o
o
u
u
n
n
t
t
e
e
r
r
f
f
u
u
n
n
c
c
t
t
i
i
o
o
n
n
s
s
t
t
a
a
t
t
e
e
m
m
e
e
n
n
t
t

counter input

up/down input (only CNTH)

RESET input

address

type of counter

set value

current value of the counter
CNT
This is an incrementing counter. If the RESET input is LOW, the value is incre-
mented every time if a rising edge is at the counter input. The output is HIGH if the
counter value reaches the set limit value. In the case of RESET input HIGH, the in-
ternal counter value is set to 0 and the output to LOW.
CNTD
This is a decrementing counter. If the RESET input is LOW, the value is decre-
mented every time if a rising edge is at the counter input. The output is HIGH if the
counter value reaches the value 0. As soon as the RESET input is HIGH, the inter-
nal counter value is set to the default value of the output to LOW.



 

