Digital Gauges: Frequently Asked Questions

Question number FAQ-0050

Specifications and connector type for DG-4120 BCD out

This shows the connector and pinout for the BCD out. For connecting to external devices such as sequencers, please refer to DG-4120 BCD out - Connecting to Sequencers, etc.

(1) BCD out connector, cable

Connector .bmp (35828 bytes)

Compatible connector type
Receptacle: DX10A-36S (Manufactured by Hirose Electric Co., Ltd.)
Compatible plug: DX40-36P (manufactured by Hirose Electric Co., Ltd.)
Plug cover: DX36-CV1 (manufactured by Hirose Electric)
Compatible cable specifications
Wire size: AWG #30
Conductor configuration: 7/0.1
Conductor body external shape: φ0.5
Cable UL style; UL202.76 and UL2789
AA-8107 BCD signal code (optional) ¥12,000
We offer a 3m length cable with the above connector on one end and an open end on the other.

(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	4×10⁴ 8×10⁴ N.C N.C
5 6 7 8	1×10¹ 2×10¹ 4×10¹ 8×10¹	23 24 25 26	NC 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 NC
17 18	1×10⁴ ²×10⁴	35 36	Print command output common

* NC indicates unused.

(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 in <8> below can be switched to positive logic when turned on and to negative logic when turned off.

Side view.bmp (147,000 bytes)

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

Turn on bit switch 3 to 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 bit switch 3 is turned off and positive logic is selected, 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

Turn on bit switch 3 to 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. This ON signal will persist until the device 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 signal remains in a hold state while it is at a low level. However, even while in 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 will 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 has the same function as a hold input. It is used for timing external devices such as printers.

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