Common Function - Mitsubishi Electric MELSEC iQ-F FX5 User Manual

Common Function

Changing the setting value while the CPU module is operating
This paragraph shows the procedure to adopt values (of special relays and special registers) other than the values set by the
parameters of GX Works3.
1.
Disable D/A conversion.
Set "D/A conversion enable/disable setting" to ON. (Page 129 D/A conversion enable/disable setting)
2.
Change the value of a target special relay/device.
Change the value of a target device.
3.
Enable D/A conversion.
Set "D/A conversion enable/disable setting" to OFF. (Page 129 D/A conversion enable/disable setting)
Precautions
An alarm occurs when the value of a special relay/device is changed while D/A conversion is enabled (Alarm code: 0F00H).
Starting/stopping the analog function in accordance with the CPU module status
This paragraph shows the analog operation in accordance with the CPU module status.
■RUN
The FX5-4DA-ADP operates in accordance with its parameters.
■PAUSE
The FX5-4DA-ADP operates in accordance with its parameters.
■STOP
Outputs are enabled even in the STOP status by using the analog test mode available when the CPU module is in the STOP
status. (Page 103 Analog Output Test when CPU Module is in STOP Status Function)
Alarm clear request
It is necessary to set the "alarm clear request" for from OFF to ON clearing the alarm code.
The table below shows the necessity of the alarm clear request for turning OFF each flag and clearing the alarm code.
Flag name
Warning output upper limit value flag
Warning output lower limit value flag
Disconnection detection flag
*1 The "error clear request" (SM50) of the CPU module is required when disconnection recovery is set to "disable".
*2 The "error clear request" (SM50) of the CPU module is required for clearing the error code.
: Requires the alarm clear request.
: Does not require the alarm clear request.
• The alarm clear of the CPU module request is required for flags which do not turn OFF automatically and
flags which cause alarms.
• Use the "error clear request" (SM50) of the CPU module to turn OFF the D/A conversion error flag and clear
the D/A conversion latest error code.
3 FX5-4DA-ADP
116
3.3 Functions
Alarm clear request required to turn
OFF the flag


*1

Alarm clear request required to clear
the alarm code


*2
