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CO1 Counter Add-On
24
You can calculate:
1. the period duration of the input signal at CLR/LATCH from the values
in latch A or latch B.
2. the pulse width and pause time from the values in latch A and latch B
The counters are controlled by ADbasic instructions via a control register
(instructions, see table in chapter 8.2).
At the inputs A/CLK, B/DIR and CLR/LATCH TTL-alike signals are necessary.
More details and limit values can be found in the "Technical Data".
1
2
3
4
5
6
CONN. 1
(male)
14
15
16
17
18
19
DIO 00-15
Counter inputs with TTL operation mode for Gold / Gold-D
(single-ended; mode not available with Rev. B2)
CONN. 3
1
2
3
4
5
6
(Stecker)
14
15
16
17
18
19
with Gold only
Counter inputs with differential operation mode
Fig. 17 – Pin assignment of the CO1 add-on
In any case you have to set the input operation mode with the instruction
CNT_SE_DIFF. This is done in pairs, i.e. the counters 1 and 2 together and the
counters 3 and 4 together (see also ADbasic manual).
With Rev. B2 differential operation mode can be set only, TTL operation mode
(single ended) is available from Rev. B3.
Although all inputs for the CO1 add-on have a pull-down resistor, not-con-
nected inputs can cause errors in an environment which is not protected
against interferences. If you do not use a counter input, connect for safety rea-
sons both lines of the (differential) input to a specified potential: Connect the
positive input to +5V and the negative input to GND.
7
8
9
10
11
12
13
CONN. 2
(female)
20
21
22
23
24
25
DIO 16-31
*SSI, DATA (-)
*SSI, DATA (+)
7
8
9
10
11
12
13
A/CLK/PWM (-)
A/CLK/PWM (+)
20
21
22
23
24
25
ADwin-Gold USB / ENET, manual version 3.8, October 2005
ADwin
13
12
11
10
9
8
7
6
5
4
3
2
25
24
23
22
21
20
19
18
17
16
15
14
8
*SSI, CLK (-)
15
B/DIR (-)
7
*SSI, CLK (+)
14
B/DIR (+)
6
RESERVED
13
5
CLR/LATCH (-)
12
4
V2
(-)
11
OUT
3
CLR/LATCH (+)
10
V1
(-)
2
OUT
V2
(+)
9
V1
(+)
OUT
1
OUT
CO1, ... , CO4
(male)
with Gold-D only
1
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