Digital Gauge Frequently Asked Questions

This shows the timing chart of the signals input from the terminal block. It can be input with a voltage-free relay contact or open collector signal.
When connecting to the sequencer, it is recommended to input from the terminal block rather than from the BCD connector.

When inputting signals from a BCD connector, the response will be faster than in the case of a terminal block. Therefore, caution regarding noise is necessary.
Please refer to the instruction manual for details.

Example of Terminal Block Input Circuit and Sequencer Connection

■ Input circuit of terminal block HOLD, RESET, PRESET GATE

<1> Timing chart for hold input, BUSY input, and print command output

When importing data into a sequencer, please apply a hold signal to ensure that the BCD signal is captured in a stable state. Be careful, as capturing data without applying the hold signal may result in incorrect readings if the BCD data changes at the time of capture.

T1
The time from when the hold signal is input until the displayed value and BCD output data are held is up to 4ms.

T2
The time from when the displayed value and BCD output data are held until the print command signal is output is up to 10μs.

T3
The pulse width of the print command signal is 100 to 150 μs.

T4
The time from when the hold signal is released to when the hold state is released is up to 150ms.

Ts
The minimum time from releasing the hold signal to re-entering is 160ms. If the hold signal is input at a shorter interval than this, the print command signal may not be output.

<2> Set Signal Timing Chart

The pulse width of the reset input signal must be at least 4 ms. The time from when the reset signal is input until the reset state is reached is a maximum of 4 ms. Additionally, the time from when the reset signal is released until the reset state is cleared is a maximum of 150 ms.

Timing chart of the preset gate input signal

The pulse width of the preset gate signal must be at least 4ms. The time from when the preset gate signal is input until the function operates is a maximum of 4ms. Additionally, the time from when the preset gate signal is released until the reset state is cleared is a maximum of 150ms.