Digital Output (Do) Hold/Reset Function; Table 7-11 Hold/Reset Specifications - Hitachi S10mini LQS070 Hardware Manual

7.12 Digital Output (DO) HOLD/RESET Function

The HOLD/RESET function is a function to HOLD (retains the output signal) or RESET
(turns OFF the output signal) the output of the digital output module when no request is
received from the master for a certain period of time.
Table 7-11 shows the specifications for the HOLD/RESET function.
No. Item
1 Applicable I/O
module
2 Setting method
3 RESET timing
4 Monitoring time
The output resets when the connection to the master is cut off or when other serious failure
such as hardware error occurs. The D.Station automatically cuts off the connection and
resets the output after a certain time elapses (timeout). Timeout occurs when no request is
received from the master for a period of time that is 4 times the timeout time selected by the
master.

Table 7-11 HOLD/RESET Specifications

Description
Digital output (DO) module
Pulse counter module (when mode 2 selected)
"FUNC2" rotary switch
• When the connection to the master is closed
• When a serious failure occurs
Depends on the setting defined by the master.
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7 COMMUNICATION FUNCTION
Remarks
The analog output (AO) module is
not applicable.
When the HOLD mode is selected,
however, the prevailing status is
retained.
It is necessary that the setting be
supported by the master.
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