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74
Pin assignments and I/O logic
Output pin assignments
Input pin assignments
Pin No.
Signal
Pin No
Signal
26
1
10
0
Data
7
BUSY
27
2
9
RE-ZERO
Switch
28
4
5
ON/OFF
29
8
3
Input signal GND
39
1
10
1
11
Not used (Reserved)
40
2
・
The pins, which are not specified, have no
connection. (Pins 2, 4, 6, 8, 10, 36. 38)
41
4
42
8
12
1
10
2
Output logic
13
2
Factory settings
14
4
When
State
15
8
Data
1
ON
16
1
10
3
Polarity Positive or zero display
ON
17
2
Stability Stabilization indicator ON
ON
18
4
Over
e
,
-e
display
ON
19
8
Strobe
Data receiving enabled
*
ON
20
1
10
4
Status
Weighing
ON
21
2
*
Data refresh when OFF
ON
22
4
All output, open collector; withstand
voltage 30 V; no pull-up resistor; low-level
output current 48 mA
Output logic of data, status, and strobe
can be switched individually in the function
table
bcd
.
23
8
46
1
10
5
47
2
48
4
49
8
24
1
10
6
25
2
30
4
31
8
32
1
10
7
33
2
34
4
35
8
50
Polarity
State
45
Stability
44
Over
37
Status
Control
signal
43
Strobe
1
Output signal GND
Input logic
Housing Shield
BUSY
Data will be held during ON
(when connected to input signal
GND).
Input by
switch
Valid when ON (when connected
to input signal GND).
All input, no voltage contact or open
collector (connected to 5 V internally)
Balance interior
0
7
Output pins
FG
BCD signals
Pin 1
BCD signals
(Data from 10 -1 to 10 -8, Polarity,
Stability, OVER, Status, Strobe)
BCD signal ground
Output signal GND
Use a shielded cable.
(LS06)
Housing (Cable shield)
Balance interior
CPU
input
terminal
Use a shielded cable.
Housing (Cable shield)
When a photocoupler is used
ON/OFF
RE-ZERO
BUSY
Input signal GND
11 Not used
(Reserved)
5 (Input terminal)
9 (Input terminal)
7 (Input terminal)
3
FG
(Upon switch-ON, make the voltage
between the input terminal and the
input signal GND terminal 0.2V or less)
When a switch is used
(1)
(2)
5,9 or 7 pin
Input signal GND
22k
Ω
10k
Ω
10k
Ω
820
Ω
5V
820
Ω
820
Ω
820
Ω
22k
Ω
5V
5V
5V
5,9 or 7 pin
Input signal GND
Содержание AD-4212A
Страница 8: ...6...
Страница 9: ...7...
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Страница 104: ...102 Z Zero point 25 27 Zero point drift 36 Zero tracking 31 36...
Страница 105: ...103 MEMO...
Страница 106: ...104 MEMO...
Страница 107: ......