Rice Lake 520 HMI Digital Weight Indicator Manual - BCD Option User Manual
Page 13

Data Information
9
Good engineering practices suggest:
•
Switches should be placed no more than six feet (two meters) from the indicator.
•
Cables for low level digital signals should not be placed near high voltage sources or equipment that emits
high levels of EMI/RFI.
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2
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37
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20
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37
19
DGND (Logic Common)
4SD MSB (8)
DGND (Logic Common)
3SD MSB (8)
Units/Tri-State enable
3SD (4)
Hold bit
3SD (2)
Units bit/TX serial output
3SD LSD (1)
4SD (4)
2SD MSB (8)
4SD (2)
2SD (4)
4SD (1)
2SD (2)
Polarity
LSD MSB (8)
LSD (1)
LSD (4)
Zero bit
LSD (2)
MSD LSB (1)
LSD LSB (1)
Print enable
2SD LSB (1)
MSD (2)
Auto tare
Valid data
Gross switch
MSD (4)
Net
Overload
No connect/RX serial
MSD MSB (8)
Zero switch
Motion bit
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
520 ribbon cable
header on BCD
option
DB-37 connector
connects to the
backplate of the 520
indicator
Figure 3-3. BCD Header to DB-37 Connector Pin-outs Option
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