Mitsubishi Electric MELSEC iQ-R Series User Manual page 70

Slave down signal (X04)
This signal indicates whether there is any slave node (down node) in which the I/O communication is stopped.
• Off: All nodes normally perform communications.
• On: A communication error occurs on a node.
When the communications with the down node is recovered, 'Slave down signal' (X04) turns off.
• The I/O communication status of the slave node can be checked in 'Communication status of nodes'
(Un\G444 to Un\G447).
• The reserved node is recognized as the down node. When not detecting the down node as the reserved
node, turn on the corresponding bit of 'Down node detection prohibit setting' (Un\G460 to Un\G463).
For auto configuration (X14), (X15), (Y15)
Use 'Auto configuration executing' (X14), 'Auto configuration completion' (X15), and 'Auto configuration request' (Y15) when
executing the auto configuration.
Execute when 'I/O communicating' (X01) is off.
• When 'Auto configuration request' (Y15) is turned on, the auto configuration starts and 'Auto configuration executing' (X14)
turns on. The auto configuration takes approximately 60 seconds at maximum to complete.
• When the auto configuration completes, the parameter is stored in 'Master function parameters' (Un\G468 to Un\G975) and
'Auto configuration completion' (X15) turns on.
• When 'Auto configuration request' (Y15) is turned off, 'Auto configuration executing' (X14) and 'Auto configuration
completion' (X15) turn off.
'I/O communication request' (Y11)
'I/O communicating' (X01)
'Auto configuration request' (Y15)
'Auto configuration executing' (X14)
'Auto configuration completion'
(X15)
Even though 'Auto configuration request' (Y15) is turned on while 'I/O communication request' (Y11) or
'Request for saving/clearing parameters to Flash ROM' (Y17) is on, 'Auto configuration completion' (X15)
does not turn on. After the output signal turns off, turn off and on 'Auto configuration request' (Y15) again.
APPX
68
Appendix 2 I/O Signals
ON
OFF
ON
OFF
ON
OFF
OFF
OFF
ON
ON
ON
ON
OFF
OFF
OFF