Mitsubishi MELSEC L Series User Manual page 55

(3) Notification to the interface side using the modem function
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2 USING THE PROGRAMMABLE CONTROLLER CPU MONITORING FUNCTION
(a) The notification message (text string data) contained in the user registered
data for connecting the modem function is conveyed using the modem
function.
The device information and the CPU status information read from the
programmable controller CPU are not sent to the external device in the
notification message. Include the device information and the CPU status
information by which the programmable controller CPU status can be
checked in the preregistered notification message.
(b) The method for message notification is functionally the same as the
notification using the modem function described in Chapter 3.
The difference is that notification is performed with Y14 OFF when using the
modem, whereas for notification using programmable controller CPU
monitoring, notification is performed for whenever the programmable
controller CPU error is detected or the designated device status is matched
with the monitoring conditions (see Section 2.2.4).
(c) During constant-cycle transmission, a notification message for one
connection data registered for notifying constant-cycle transmission is sent.
(d) During condition agreement transmission, a notification message for
connection data registered in the block where the monitoring conditions
match is sent in block units.
When there are multiple blocks where the monitoring conditions match,
notification is performed at the "Wait time of notification" interval (notification
interval) set by the user for use with the modem function. The programmable
controller CPU monitoring stops until notification has been performed to all
blocks where the monitoring conditions match.
POINT
(1) When performing message notification using the programmable controller CPU
monitoring function, set the corresponding interface side as the target of the
modem function.
(2) When setting data for the programmable controller CPU monitoring function
with GX Configurator-SC, programmable controller CPU monitoring begins
immediately when the Q series C24 starts up.
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