Mitsubishi Electric MELSEC iQ-R Series User Manual page 43

High speed digital-analog converter module
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Clearing disconnection detection
Even if the disconnection cause is eliminated, the analog output does not restart automatically to prevent an incorrect output.
To clear the disconnection detection and restart analog output, execute the following operations for each operation mode.
When the analog output restarts, bits of the corresponding channel of 'Disconnection detection flag' (Un\G38) are cleared.
When the analog output of all the channels restarts, 'Disconnection detection signal' (XD) turns off.
■In the normal output mode or inter-module synchronization mode
To restart the analog output, check 'CH1 Digital value' (Un\G460) or 'CH1 Synchronization digital value' (Un\G9500) and turn
on and off 'Error clear request' (YF). According to the status of 'CH1 Output enable/disable flag' (Y1), the analog output
restarts.
■In the wave output mode
When a disconnection is detected, wave output stops. After turning on and off 'Error clear request' (YF), set 'CH1 Wave output
start/stop request' (Un\G462) from Wave output stop request (0) to Wave output start request (1) again. According to the
status of 'CH1 Output enable/disable flag' (Y1), the wave output restarts.
For details on the wave output function, refer to the following.
Page 45 Wave Output Function
Precautions
Wave
When the wave output status switches to the during wave output stop under the following conditions, a disconnection may not
be detected.
• 'CH1 D/A conversion enable/disable setting' (Un\G500) is set to D/A conversion enable (0).
• 'CH1 Output setting during wave output stop' (Un\G524)' is set to 0V/0mA (0).
• 'CH1 Output enable/disable flag' (Y1) is on.
1 FUNCTIONS
1.12 Disconnection Detection Function
1
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