Mitsubishi L Series User Manual page 117

When the flow meter connected to the A/D converter module output the instantaneous flow amount (range:
Ex.
3
cm /min) in analog at intervals of 500ms
• "Integration cycle setting": 500ms
• "Flow amount time unit setting": "1: /min"
• "Unit scaling setting": "2: × 100"
• Value in CH Scaling value (digital operation value) (Un\G54 to Un\G57) when integral processing is
performed: 5000
• Previous amount: 11000 (Maintained amount inside the A/D converter module: 11000.127)
The following formulation shows the integrated flow amount with the above settings.
Integrated flow amount =
"15166" acquired by rounding off the value after the decimal point is stored in CH
(Un\G1332 to Un\G1339).
(5) Flow amount integration temporary stop
The flow amount integration can be stopped temporarily through a program. Flow amount integration function can
be temporarily stopped by changing the value of CH
(Un\G1356 to Un\G1359) during its operation. CH
to Un\G1359) operates only when the flow amount integration function is enabled.
(a) Operation procedure to stop the flow amount integration temporarily
1.
While the flow amount integration function is operating, change the CH
temporary stop request (Un\G1356 to Un\G1359) of the channel to be stopped temporarily No
request (0) → Temporary stop request (1).
2.
When the rise of No request (0) → Temporary stop request (1) is detected, the flow amount
integration function is temporarily stopped, and CH
(Un\G1364 to Un\G1367) of the corresponding channel turns Temporarily stopped (1).
(b) Operation procedure to restart the flow amount integration (to cancel temporary
stop)
1.
While the flow amount integration function is temporarily stopped, change the CH
integration temporary stop request (Un\G1356 to Un\G1359) of the stopped channel Temporary
stop request (1) → No request (0).
2.
When the fall of Temporary stop request (1) → No request (0) is detected, the flow amount
integration function is restarted, and CH
to Un\G1367) of the corresponding channel turns No temporary stop request (0).
(Instantaneous flow amount
500
= (5000 100) + 11000.127
60000
= 4166.666 + 11000.127
= 15166.7936
Flow amount integration temporary stop request (Un\G1356
T
Unit scaling) +
T
Flow amount integration temporary stop request
Flow amount integration temporary stop flag
Flow amount integration temporary stop flag (Un\G1364
CHAPTER 8 FUNCTIONS
Previous amount
Integrated flow amount
Flow amount integration
Flow amount
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