Analog Output Hold/Clear Function - Mitsubishi Electric MELSEC iQ-R Series User Manual

1.5

Analog Output HOLD/CLEAR Function

Set whether to hold or clear the analog output value that has been output when the operating status of the CPU module is
RUN, STOP, or stop error.
The HOLD/CLEAR setting can be checked with 'CH1 HOLD/CLEAR function setting monitor' (Un\G431).
Operation
When the operating status of the CPU module is RUN, STOP, or stop error, the analog output status changes as shown in the
following table, depending on the combination of the settings of the analog output HOLD/CLEAR setting, 'CH1 D/A conversion
enable/disable setting' (Un\G500), and 'CH1 Output enable/disable flag' (Y1).
■In the normal output mode
Execution CH1 D/A conversion
status enable/disable setting
(Un\G500)
CH1 Output enable/disable
flag (Y1)
Analog output HOLD/
CLEAR setting
Analog output produced when the CPU module
is in the RUN status
Analog output produced when the CPU module
is in the STOP state
Analog output produced when the CPU module
is in the stop error state
Analog output produced when a watchdog timer
*1
error occurs
*1 The error occurs due to a hardware failure of the D/A converter module or other causes. 'Module READY' (X0) and the RUN LED of the
D/A converter module turn off.
When a watchdog timer error occurs, 'Module READY' (X0) and the RUN LED of the D/A converter module turn off.
*2 The following operation is performed when the CPU module is in the STOP state, the D/A conversion enable/disable setting is set to D/
A conversion enable (0) for the channel where HOLD is set, and 'Operating condition setting request' (Y9) is turned on and off.
When Output enable/disable flag is off: Outputs 0V/0mA.
When Output enable/disable flag is turned on: Outputs the offset value.
■In the wave output mode
Execution CH1 D/A conversion
status enable/disable setting
(Un\G500)
CH1 Output enable/disable
flag (Y1)
Analog output HOLD/
CLEAR setting
Wave output status
Analog output produced when the CPU module is
in the RUN status
Analog output produced when the CPU module is
in the STOP state
Analog output produced when the CPU module is
in the stop error state
Analog output produced when a watchdog timer
*1
error occurs
*1 The error occurs due to a hardware failure of the D/A converter module or other causes. 'Module READY' (X0) and the RUN LED of the
D/A converter module turn off.
When a watchdog timer error occurs, 'Module READY' (X0) and the RUN LED of the D/A converter module turn off.
*2 The output set in 'CH1 Output setting during wave output stop' (Un\G524).
1 FUNCTIONS
20
1.5 Analog Output HOLD/CLEAR Function
Enable
Enable
HOLD CLEAR
The digital value converted in analog is output.
Hold Offset value
Hold Offset value
0V/0mA 0V/0mA
Enable
Enable
HOLD
Output Stop Pause
*2
Wave Hold
data
Hold
Hold
0V/0mA
Disable
HOLD or CLEAR
Offset value
*2
Offset value
Offset value
0V/0mA
CLEAR
Output Stop Pause
*2
Wave Offset
data value
Offset value
Offset value
0V/0mA
Disable
Enable or disable
HOLD or CLEAR
0V/0mA
0V/0mA
0V/0mA
0V/0mA
Disable
Disable Enable or
disable
HOLD or HOLD or
CLEAR CLEAR
Offset value 0V/0mA
Offset value 0V/0mA
Offset value 0V/0mA
0V/0mA 0V/0mA