A&D AD-4212A-100 Instruction Manual page 74

Pin assignments and I/O logic
Output pin assignments
Pin No.
26 1
27 2
28 4
29 8
39 1
40 2
41 4
42 8
12 1
13 2
14 4
15 8
16 1
17 2
18 4
19 8
20 1
21 2
22 4
23 8
46 1
47 2
48 4
49 8
24 1
25 2
30 4
31 8
32 1
33 2
34 4
35 8
50 Polarity
45 Stability
44 Over
37 Status
43 Strobe
1 Output signal GND
Housing Shield
5V 5V
10kΩ 10kΩ
CPU
input
terminal
Signal
0
10
1
10
2
10
3
10
Data
4
10
5
10
6
10
7
10
State
Control
signal
5V 5V
FG
22kΩ 22kΩ
820Ω
820Ω
ON/OFF
820Ω
RE-ZERO
820Ω
BUSY
Input signal GND
Balance interior
Input pin assignments
Pin No
7 BUSY
RE-ZERO
9
ON/OFF
5
Input signal GND
3
Not used (Reserved)
11
・The pins, which are not specified, have no
connection. (Pins 2, 4, 6, 8, 10, 36. 38)
Output logic
Factory settings
Data 1
Polarity Positive or zero display
Stability Stabilization indicator ON
e, -e display
Over
Strobe Data receiving enabled*
Status Weighing
*Data refresh when OFF→ON
All output,
•
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.
(LS06)
BCD signals
Output signal GND
Balance interior
Input logic
BUSY Data will be held during ON
(when connected to input signal
GND).
Input by Valid when ON (when connected
switch to input signal GND).
All input, no voltage contact or open
•
collector (connected to 5 V internally)
Use a shielded cable.
Housing (Cable shield)
(1)
When a switch is used
11 Not used
(Reserved)
5 (Input terminal)
Input signal GND
(2) When a photocoupler is used
9 (Input terminal)
7 (Input terminal)
Input signal GND
3
(Upon switch-ON, make the voltage
between the input terminal and the
input signal GND terminal 0.2V or less)
72
Signal
Switch
When
open collector; withstand
Use a shielded cable.
FG
Housing (Cable shield)
Output pins
BCD signals
0
(Data from 10 -1 to 10 -8, Polarity,
Stability, OVER, Status, Strobe)
Pin 1
BCD signal ground
5,9 or 7 pin
5,9 or 7 pin
State
ON
ON
ON
ON
ON
ON
7