Digital Gauges: Frequently Asked Questions

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.
The connection to external devices is the same as for the DG-4240, so please refer to the DG4240 BCD Receiver Recommended Circuit.

(1) BCD OUT 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 Preset Out 1 Preset Out 2
5 6 7 8	1×101 2×101 4×101 8×101	23 24 25 26	Preset Out 3 Preset Out 4 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 NC
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 it's on and to positive logic when it's off.
BCD output, polarity output, and decimal point output can be switched between positive and negative logic.

 

 

• Judgment output
  Pin No. 21 (Preset Out 1 output)
  Pin No. 22 (Preset Out 2 output)
  Pin No. 23 (Preset Out 3 output)
  Pin No. 24 (Preset Out 4 output)
  Open collector output

Set polarity = Measured polarity and
The device turns on when the set value is less than or equal to the measured value.

 

• Polarity output pins: No. 25 (+ output), No. 26 (- output)
  Open collector output

• If you turn on bit switch 3 and select negative logic,

•  

-	No. 25 (+ Output)	No. 26 (- Output)
When the measured value is positive (+)	on (Low level)	Off (High level)
When the measured value is negative (-)	Off (High level)	on (Low level)
Reset	on (Low level)	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.

 

(4) 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.

 

(5) Error output pin No. 30

Open collector output
If a miscount occurs in the device's counting circuit, an ON signal will be output. This ON signal will persist until the device is reset.

 

(6) 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.

 

(7) 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.

 

(8) BUSY input pin No. 33

<6> This is the same state as a hold input. It is used for timing external devices such as printers.

 

(9) 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.