Analog Output Test Function When The Cpu Module Is In Stop State - Mitsubishi Electric MELSEC iQ-R Series User Manual

1.6
Analog Output Test Function When the CPU
Module is in STOP State
Normal
This function allows performing the analog output test when the CPU module is in the STOP state.
Operation
By forcibly turning on 'CH1 Output enable/disable flag' (Y1) when the CPU module is in the STOP state, the analog output
value is changed from the offset value to the D/A-converted analog output value. Hereafter, when 'CH1 Digital value'
(Un\G460) or 'CH1 Synchronization digital value' (Un\G9500) is updated, the analog output value is updated as well.
The following figure shows the relation between 'CH1 Output enable/disable flag' (Y1) and the analog output value of the CPU
module in the STOP state when "Analog output HOLD/CLEAR setting" is set to "CLEAR".
CPU module
status
'CH1 Output
enable/disable
flag' (Y1)
Analog output
value status
Analog output value
converted from digital
value
Performed by the D/A converter module
Performed by a program
(1) 'CH1 Output enable/disable flag' (Y1) turns off when the state of the CPU module is changed into STOP, and the offset value is output in analog.
(2) By forcibly turning on 'CH1 Output enable/disable flag' (Y1), the analog output value is changed from the offset value to the D/A-converted analog output
value.
(3) At this time, when 'CH1 Digital value' (Un\G460) or 'CH1 Synchronization digital value' (Un\G9500) is changed, the analog output can be tested.
Enabled functions
The settings of the following functions are enabled during the analog output test.
Normal
• Scaling function
• Shift function
• Warning output function
• Rate control function
Synchronization
• Warning output function
1 FUNCTIONS
26

1.6 Analog Output Test Function When the CPU Module is in STOP State

High speed
RUN
(1)
OFF
Offset value
Synchronization
(3)
STOP
(2)
ON
Analog output value
converted from digital
value
ON
OFF
Offset value
Analog output value
converted from digital
value
RUN