Jäger ADwin-Pro, System And Hardware Description

Page: 114 / 218

Pro I: Digital-I/O- and Counter Modules
Pro-CNT-8/32-I Rev. A
ADwin
110
ADwin-Pro Hardware, manual version 2.9, June 2006
5.8.9 Pro-CNT-8/32-I Rev. A
To this module you find an improved successor module Pro-CNT-16/32-I
Rev. A (see page 118 ).
The counter module Pro-CNT-8/32-I Rev. A has 8 counters (32 bit). All count
rates can be loaded into the register with a single ADbasic command so that
all counter values can be latched simultaneously. It is also possible to latch the
counters individually. With a rising edge of a TTL pulse the 32-bit counter incre-
ments by one. The counter can be cleared by software command. The count
rate can be determined by the difference between two successive register val-
ues. Since the register access is discrete-time, the frequency can be calcu-
lated online.
The counter inputs are optically isolated from the system circuitry as well as
from other inputs. The event input is also isolated from the system circuitry. The
input voltage range can be selected by three jumpers. The default setting of the
input voltage range is 24V.
Fig. 207 – Pro-CNT-8/32-I Rev. A : Block diagram
The module Pro-CNT-8/32-I is equipped with 8 times the components shown
in the block diagram; exception: the event input and the control register.
Fig. 208 – Pro-CNT-8/32-I Rev. A : Pin assignment
NOTE: Only Counter #1 is shown for clarity of the schematic.
Control registers
32 bit Counter #1...#8
32 bit Latch #1...#8
CLK
EN
CLR
ADwi
n
-P
ro
bus
+
-
CLK #n
24V
12V
5V
+
-
EVENT
24V
12V
5V
4k3
2k
560
4k3
2k
560
CNTR 1 CLK (-)
CNTR 5 CLK (-)
CNTR 2 CLK (-)
CNTR 6 CLK (-)
CNTR 3 CLK (-)
CNTR 7 CLK (-)
CNTR 4 CLK (-)
CNTR 8 CLK (-)
EVENT IN (+)
CNTR 1 CLK (+)
CNTR 5 CLK (+)
CNTR 2 CLK (+)
CNTR 6 CLK (+)
CNTR 3 CLK (+)
CNTR 7 CLK (+)
CNTR 4 CLK (+)
CNTR 8 CLK (+)
EVENT IN (-)
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED