11-5
Specifications Section 1-2
BCD
Communications
1-2-4 Timing Chart
Outputting Sampling Data
Data becomes valid and the Data Valid (D.V.) signal turns ON approximately
30 ms after the rising edge of the REQ signal. Read the data while the D.V.
signal is ON.
The D.V. signal turns OFF after 40 ms, and then the DATA turns OFF after
another 16 ms.
When reading the data from a PLC, read the data while the D.V. signal is ON.
Outputting Continuous Data
While the REQ signal is ON, the DATA signals will be output every 64 ms. If
the HOLD input is turned ON while changing between data 1 and data 2, the
DATA signals will hold either data 1 or data 2, depending on the timing of the
HOLD input. The Data signals will never turn OFF in this case.
1-2-5 Precautions
• The MAX.REQ. signal and MIN.REQ. signal cannot be used for the
K3HB-C.
• The K3HB-C has no HOLD input pin.
• When reading the maximum or minimum value from the Digital Indicator,
the data is valid 30 ms after the rising edge of the MAX.REQ signal or
MIN.REQ signal. Read data while the D.V. signal is ON.
• The RUN signal is ON while in Run Mode or Test Mode; however, when
an error other than an overflow or an underflow occurs, the RUN signal
turns OFF. When the RUN signal is not ON, the D.V. signal and DATA sig-
nal are also not output.
• When the HOLD input turns ON, the Digital Indicator stops reading inputs
and holds the measurement value taken immediately prior to the HOLD
input turning ON.
• When the RESET input turns ON, all BCD signals turn OFF.
Approxi-
mately
30 ms
All data high All data high
40 ms
16 ms
Data
DATA
DATA
VALID
Pulse of 20 ms min. (50 ms max.)
REQUEST
MAX REQ/
MIN REQ
Approxi-
mately
30 ms
All data high
Data 1 Data 2
DATA
DATA
VALID
64 ms 64 ms
40 ms 40 ms
24 ms 24 ms
REQUEST
MAX REQ/
MIN REQ
HOLD
Data display
Input
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