Mitsubishi Electric MELSEC iQ-R Series User Manual page 83

Precautions
• When the inter-module synchronization function is enabled, the rate control function and wave output function cannot be
used.
• For the alert output when the inter-module synchronization function is enabled, the update timings of the ALM LED, 'Alert
output signal' (XE), 'Alert output upper limit flag' (Un\G36), and 'Alert output lower limit flag' (Un\G37) are changed as
follows.
Program
Inter-module synchronous
interrupt program
CH1 Synchronous digital value
Synchronous digital value 1
CH1 Analog output value
CH1 Synchronous digital value
Synchronous digital value 2
CH1 Alert output upper
limit value
CH1 Alert output lower
limit value
Synchronous digital value 3
ALM LED
Alert output signal (XE)
OFF
Alert output upper flag
Alert output lower flag
(1) The ALM LED turns on when the D/A conversion is completed (an alert is detected).
(2) 'Alert output signal' (XE) is refreshed at the start of the synchronous interrupt program.
(3) 'Alert output upper limit flag' (Un\G36) and 'Alert output lower limit flag' (Un\G37) are refreshed at the END processing.
Inter-module synchronization cycle
E
N
D
Synchronous
Synchronous
interrupt program
interrupt program
Synchronous digital value 2
D/A
conversion
(1)
OFF
(2)
0
0
E
N
D
Synchronous
interrupt program
Synchronous digital value 3 Synchronous digital value 4
D/A D/A
conversion conversion
ON
ON
(3)
1.15 Inter-Module Synchronization Function
E
N
D
1
(3)
1
1 FUNCTIONS
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