Mitsubishi Electric MELSEC iQ-R Series User Manual page 139

External power supply READY flag
Common
■Device number
The following shows the device number of this input signal.
Signal name
External power supply READY flag
■When the external power supply is off, or when 200ms has not yet elapsed after the power-on
'External power supply READY flag' (X7) remains off and the D/A conversion processing is not performed. In this case, the
analog output value is 0V/0mA.
■When the external power supply is turned on
After 200ms, 'External power supply READY flag' (X7) turns on. The D/A conversion processing is started on the channels
where the D/A conversion is enabled.
CPU module power supply
In normal mode:
'Module READY' (X0)
In offset/gain setting mode:
'Offset/gain setting mode status flag' (XA)
External power supply
'External power supply READY flag' (X7)
(1) The D/A conversion processing is not performed.
(2) The D/A conversion processing is performed.
■When the external power supply is turned off
'External power supply READY flag' (X7) turns off and the D/A conversion processing stops. In this case, the analog output
value is 0V/0mA.
When the external power supply is turned off and on again, 'External power supply READY flag' (X7) turns on after 200ms as
is the case when the external power supply is turned off and on, and the D/A conversion processing is restarted.
Use the external power supply that satisfies the specifications described in the performance specifications.
Otherwise, 'External power supply READY flag' (X7) does not turn on. For the performance specifications,
refer to the following.
 MELSEC iQ-R High Speed Digital-Analog Converter Module User's Manual (Startup)
CH1
X7
ON
ON
ON
200ms
ON
(1)
CH2 CH3
OFF
OFF
(2)
Appendix 2 I/O Signals
CH4
A
APPX
137