Mitsubishi NZ2GFCF-D62PD2 User Manual page 175

(2) External power supply monitoring function
Using this function, the high-speed counter module monitors the ON/OFF status of the external power supply and
indicates it with the I/O PW LED on the extension output module.
By using External power supply monitor request flag (RY1F), a moderate error is generated when the external
power supply is off. Thus, the ON/OFF status of the external power supply is notified and the extension output
module can be stopped.
(a) External power supply monitoring function
When the external power supply is turned off with External power supply monitor request flag (RY1F) on, a
moderate error occurs. When using this function, check that the external power supply stabilizes before turning
on External power supply monitor request flag (RY1F). When turning off the external power supply, turn off
External power supply monitor request flag (RY1F) in advance.
Controlled by the high-speed counter module
ON
Module power
supply
OFF
External power
supply
OFF
Error detection disable
Error status flag
*1
(RX36)
OFF
External power
supply monitor
request flag
OFF
(RY1F)
External power
supply monitor
state flag
OFF
(RX1F)
*1 Errors which occur in the extension I/O module are displayed in the error area of CH1 of the high-speed counter module.
(b) Setting and checking the external power supply monitoring function
Item
External power supply monitor request
flag (RY1F)
External power supply monitor state
flag (RX1F)
ON
Error detection enable
ON
ON
Set whether to enable or disable the external power
supply monitoring function.
Indicates whether the external power supply
monitoring function is enabled or disabled.
ON
Description
CHAPTER 8 FUNCTIONS
Error detection disable
Reference
Page 249, Appendix 1.2
Page 236, Appendix 1.1
173
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