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Digital Gauges: Frequently Asked Questions

Question number FAQ-0063

DG-4240 BCD OUT Connector Signal Description

Please refer to the instruction manual for details.


To input the BCD signal into a sequencer or similar device, make sure to hold the signal using a hold signal.
For information on connecting to external devices, please refer to the DG4240 BCD Receiver Recommended Circuitry.

 

(1) BCDout connector, cable

 

AA8107 type BCD signal cable, 3m, ¥12,000
One end with the above connector, the other end open, 3m in length.
It is available as an option.

  • Compatible connector type
    Receptacle: DX10A-36S (Hirose Electric)
    Compatible plug: DX40-36P (Hirose Electric)
    Plug cover: DX36-CV1 (Hirose Electric)

 

  • Compatible cable specifications
    Wire size: AWG #30
    Conductor configuration: 7/0.1
    Conductor body external shape: φ0.5
    Cable UL style; UL20276 and UL2789

 

(2) BCD connector pin numbers and signal content

 

PIN number Signal content PIN number Signal content
1
2
3
4		 1 x 10⁻⁶ BCD output
2 × 10 0
4 × 10 0
8×10 0		 19
20
21
22		 4 x 10 4
8×10 4
LOWER output
OK output
5
6
7
8		 1×101
2×101
4×101
8×101		 23
24
25
26		 UPPER output
NC
Polarity output +
Polarity output -
9
10
11
12		 1×102
2×102
4×102
8×102		 27
28
29
30		 D.P3 decimal point output [10μm, 0.00]
D.P4 decimal point output [1μm, 0.000]
NC
Error output
13
14
15
16		 1×103
2×103
4×103
8×103		 31
32
33
34		 Hold output
Reset input
BUSY input
Comparable gate input
17
18		 1×104
2×104		 35
36		 Print command output
common

 

(3) Explanation of the signal content

  • BCD output pins No. 1-20
    Positive/negative logic switching, 5-digit parallel output.
    Open collector output

The bit switch 3 shown in <18> below can be switched to negative logic when turned on and to positive logic when turned off.

BIT SW settings.bmp (239224 bytes)

  • Pass/Fail Judgment Output
    Pin No. 21 (LOWER output) is turned on when the LOWER setting value is greater than or equal to the count value.
    Pin No. 22 (OK output) is turned on when LOWER setting value < count value < UPPER setting value.
    Pin No. 23 (UPPER output) is turned on when UPPER setting value ≥ count value.
    Open collector output

 

  • Polarity output pins: No. 25 (+ output), No. 26 (- output)
    Open collector output
  • If you turn on bit switch 3 and select negative logic,
    When the measured value is positive (+): No. 25: on (Low level), No. 26: off (High level)
    When the measured value is negative (-): No.25: off (High level), No.26: on (Low level)
    Reset: No.25: on (Low level), No.26: off (High level)
  • If you turn off bit switch 3 and select positive logic, the on/off states of Nos. 25 and 26 above will be reversed.

  • Decimal point output
    Pin No. 27 (D.P3, when minimum measurement unit of 10 μm is selected)
    Pin No. 28 (D.P4, when minimum measurement unit of 1 μm is selected)
    Open collector output
  • If you turn on bit switch 3 and select negative logic,
    When bit switch 1 is turned on and 1 μm is selected: No. 27: off (high level), No. 28: on (low level)
    When bit switch 1 is turned off and 10μm is selected: No.27: off (high level), No.28: on (low level)
  • If you turn off bit switch 3 and select positive logic, the on/off states of numbers 27 and 28 above will be reversed.

  • Error output pin No. 30
    Open collector output
    If a miscount occurs in the device's counting circuit, an ON signal will be output.
    The ON signal will remain active until it is reset.

  • Hold input pin No. 31
    When a low-level voltage signal is input, the displayed value and BCD output data are held, and a print command signal is output. This hold state continues as long as the signal is low. However, even during the hold state, the counting circuit continues to perform counting operations in response to the input signal from the gauge sensor, so when the hold is released, the displayed value and BCD output data change to the measured value at that time.

  • Reset input pin No. 32
    When a low-level voltage signal is input, the displayed value, BCD output data, error display, and error output are reset. The reset state persists as long as this signal is low.

  • BUSY input pin No. 33
    This is the same state as a hold input. It is used for timing external devices such as printers.

  • Comparator gate output pin No. 34
    When a low-level voltage signal is input, the pass/fail judgment is forcibly stopped, and all pass/fail judgment outputs are turned off.

  • Print command output pin No. 35
    Open collector output
    When a hold signal or busy signal is input and the displayed value and BCD output are held, a negative pulse print command signal is output.

Last updated: 2000-12-08