12
APPLICATION FUNCTIONS
9
DEVICE MONIT
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R
UT
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10
MELS
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TA
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K
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BRAR
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11
PROGRAMMING
12
AP
PL
ICA
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FUNCT
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13
E
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ROR COD
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TROU
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APPE
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INDEX
12.1 Transient Transmission Function
12.1.1 Communication function
12
- 3
12.1.1 Communication function
(1) Supplementary setting
Set the execution conditions for the transient transmission.
(a) Constant scan
Set a time for constant link scan.
(b) Block data assurance per station
Set whether to guarantee cyclic data in station units.
When the "Block data assurance per station is available" checkbox is checked,
link refresh is performed handshaking between the personal computer and the
CC-Link IE Controller Network board.
(c) Punctuality is guaranteed.
When the "Punctuality is guaranteed" checkbox is checked, each station executes
the transient transmission for the number of times specified in "Maximum No. of
transients in one station", which keeps the link scan time constant.
(d) Maximum No. of transients in one station.
Set the number of transient transmissions that one station can be executed in one
link scan.
Change the number of transient transmissions executed in one link scan as
necessary. (See POINT below)
POINT
(1) By increasing the number of transients, multiple transient instructions can be
executed at the same time (in one link scan).
(2) If the number of transients is increased and the transient request was issued
in each station at the same time, the link scan time becomes temporarily
longer and the cyclic transmission is also affected. Do not set unnecessarily
large values.
Initial value
Setting range
Constant scan
None
1 to 500 ms
Block data assurance per station
Checked
Checked/Unchecked
Transient transmission
Punctuality is guaranteed.
Checked
Checked/Unchecked
Maximum No. of transients
in one station.
2
1 to 10
Setting value
Setting item