Analog Output Hold/Clear Function - Mitsubishi Electric MELSEC iQ-F FX5 User Manual

Analog output HOLD/CLEAR function

Sets whether to clear the current analog output value, or hold the previous value or the setting value when the CPU module
operating status is Run, Stop, or Stop Error.
When the setting value is set, it becomes the value that was set in 'CH1 HOLD setting value' (Un\G596). The following table
lists the setting ranges.
Output range setting
4 to 20 mA
0 to 20 mA
1 to 5 V
0 to 5 V
0 to 10 V
-10 to +10 V
User range setting (voltage)
User range setting (current)
*1 The setting and practical ranges applied when the scaling function is enabled depend on the setting of the upper and lower scaling limit
values.
The HOLD/CLEAR setting can be checked with 'CH1 HOLD/CLEAR function setting monitor' (Un\G431).
Operation
When the CPU module operation status changes to RUN, STOP, or Stop Error, the following analog output state is entered,
depending on the combination of the analog output HOLD/CLEAR setting, 'CH1 D/A conversion enable/disable setting'
(Un\G500), and 'CH1 Output enable/disable flag' (Un\G70, b1). If the analog output HOLD/CLEAR function setting is the
previous value, the last output value will be held.
■In the normal output mode
Execution CH1 D/A conversion enable/
status disable setting (Un\G500)
CH1 Output enable/disable
flag (Un\G70, b1)
Analog output HOLD/CLEAR
setting
Analog output status while the CPU module is RUN
Analog output status while the CPU module is STOP
Analog output status while the CPU module is in Stop
Error
The external power supply READY flag is off.
The disconnection detection flag is on.
Analog output status when a watchdog timer error
occurs
*1 When a watchdog timer error occurs, 'Module READY' (Un\G69, b0) turns off and the RUN LED of the analog output module turns off.
*2 Also when the CPU module changes from STOP to RUN, the value is output according to the analog output HOLD/CLEAR setting.
*3 When the external supply power shuts off or a disconnection is detected and then it is restored, the output will be the offset value.
2 FX5-4DA
186
2.4 Functions
When the scaling function is disabled
Setting range (practical range)
0 to 32767
(practical range: 0 to 32000)
-32768 to +32767
(practical range: -32000 to +32000)
Enable
Enable
HOLD
Previous Setting
Value value
Output the value D/A-converted from
the digital value
Previous HOLD
*2*3
value setting
value
Previous HOLD
*3
value setting
value
0 V/0 mA 0 V/0 mA
*1
When the scaling function is enabled
Setting range
-32000 to +32000
Disable
CLEAR Previous Value, setting
value, or CLEAR
Offset value
Offset Offset value
value
*2*3
Offset Offset value
value
*3
0 V/0 mA 0 V/0 mA
*1
Disable
Enable/disable
Previous Value, setting
value, or CLEAR
0 V/0 mA
0 V/0 mA
0 V/0 mA
0 V/0 mA