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6.22 High Speed Interrupt Function
6.22.3 Processing times
6
FUNCTIONS
Table6.47 Processing times related to high speed I/O refresh and high speed buffer transfer
Processing Item Processing Time
Waiting time
• Max. 37.5 s or more than 37.5 s instruction processing time
• Max. 40 s when CC-Link IE controller network, MELSECNET/H, CC-Link or intelligent function
modules are mounted on extension base unit.
High speed interrupt start high speed
interrupt end
22 s
X input
<Main base unit>
Time = 0.14 (total number of X points)+0.65 (number of settings)+0.85
<Extension base unit>
Time = 0.21 (total number of X points)+0.65 (number of settings)+0.85
(Calculation example) 3.74 s when the module is mounted on the main base unit, the number of
settings is 1, and the number of X points is 16
Buffer memory read
<Main base unit>
• 16 words or less
Time = 0.47 (total number of transferred words)+2.85 (number of settings)+0.95
• More than 16 words
Time = 0.5 (total number of transferred words)+0.95
<Extension base unit>
• 16 words or less
Time = 1.07 (total number of transferred words)+2.85 (number of settings)+0.95
• More than 16 words
Time = 1.1 (total number of transferred words)+0.95
(Calculation example) 4.74 s when the module is mounted on the main base unit, thenumber of
settings is 1, and the number of words is 2
I49 overhead 41 s
High speed interrupt program
execution
Depends on the user-created interrupt program.
Buffer memory write
<Main base unit>
• 16 words or less
Time = 0.47 (total number of transferred words)+2.65 (number of settings)+0.95
• More than 16 words
Time = 0.55 (total number of transferred words)+0.95
<Extension base unit>
• 16 words or less
Time = 1.07 (total number of transferred words)+2.65 (number of settings) + 0.95
• More than 16 words
Time = 1.15 (total number of transferred words)+0.95
(Calculation example) 4.54 s when the module is mounted on the main base unit, the number of
settings is 1, and the number of words is 2
Y output
<Main base unit>
Time = 0.13 (total number of Y points) +1.55
<Extension base unit>
Time = 0.2 (total number of Y points)+1.55
(Calculation example) 3.63 s when the module is mounted on the main base unit, the number of
settings is 1, and the number of Y points is 16
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