Mitsubishi Electric NZ2GF2B1-16D User Manual page 250

(2) When the ON/OFF status of an external output cannot be changed
Check item
Is the I/O PW LED turned on?
Is the corresponding LED (Y0 LED to YF LED) of
the output module on when External output
signal Y (RY0 to RYF, RY10 to RY1F) is turned
on?
Is the setting of the refresh device correct?
Is Remote READY (RWr0.b11) on?
Is the fast logic function used correctly?
Has the network synchronous communication
setting (synchronous/asynchronous) been
changed on the network configuration settings?
Is the synchronous output timing setting function
used correctly?
Is ON/OFF switching period of output set to be
shorter than maximum output response time
when the module uses the synchronous output
timing setting function?
Is the inter-module synchronous interrupt
program created when MELSEC iQ-R series
modules use the CC-Link IE Field Network
synchronous communication function together
with the inter-module synchronization function?
If an external input cannot be read or an external output cannot be controlled even after the above actions are taken, the I/O
module may be failed. Please consult your local Mitsubishi representative.
248
Take corrective action according to the following.
• When the I/O PW LED does not turn on ( Page 243, Section 12.3 (2))
If the LED turns on, there is a problem on the output wiring.
Check the wiring confirming that the output wiring is not disconnected or short-circuited.
Refer to the following as well.
• Troubleshooting for output circuit ( Page 252, Section 12.6.2)
Check the refresh parameter and correct the setting of the refresh device so that it matches with the setting
in the program. For the setting of the refresh parameters, refer to the following.
 User's manual for the master/local module used
To enable changing the ON/OFF status of the external output when the module power supply is on, the
initial processing must be executed by using Initial processing request flag (RWr0.b8) and Initial processing
completion flag (RWw0.b8). Execute the initial processing to check that Remote READY (RWr0.b11) is on.
For details, refer to the following.
• Initial processing request flag (RWr0.b8) ( Page 258, Appendix 2 (1) (a))
• Initial processing completion flag (RWw0.b8) ( Page 266, Appendix 2 (9) (a))
When the fast logic function is enabled, output Y is turned on or off not by the remote output signals (RY)
received from the master module but by the internal operation result of the module. Disable the fast logic
function or change the condition of output.
For details on the fast logic function, refer to the following.
• Fast Logic Function ( Page 190, Section 9.11)
• Fast logic setting Y (address: 0110H to 011FH, 0130H to 013FH, and 0210H to 021FH) ( Page
273, Appendix 3 (10))
When the network synchronous communication setting has been changed, turn off and on the power
supply, or perform remote reset.
When the synchronous output timing setting function is enabled, output Y is turned on or off not by the
remote output signal (RY) but by setting Synchronous output timing setting Y OFF to ON and
Synchronous output timing setting Y ON to OFF (RWw14 to RWw33). Disable the synchronous output
timing setting function or check Synchronous output timing setting Y OFF to ON and Synchronous output
timing setting Y ON to OFF (RWw14 to RWw33).
When the module uses the synchronous output timing setting function, if the ON/OFF switching period of
output is set to be shorter than maximum output response time, a connected device may not turn on or off.
Correct values of Synchronous output timing setting Y OFF to ON and Synchronous output timing setting
Y ON to OFF (RWw14 to RWw33) so that the ON/OFF switching period becomes longer than maximum
output response time.
Create the inter-module synchronous interrupt program when MELSEC iQ-R series modules use the CC-
Link IE Field Network synchronous communication function together with the inter-module synchronization
function.
For the inter-module synchronous interrupt program, refer to the following.
 MELSEC iQ-R Inter-Module Synchronization Function Reference Manual
Action