Omron CJ - 08-2008 - SIOU Refresh Tab Page

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PLC Setup Section 7-1
7-1-2-4 SIOU Refresh Tab Page
Special I/O Unit Cyclic Refreshing
Note If Special I/O Units are not refreshed periodically (i.e., within 11 s) by the CPU
Unit, a CPU Unit monitoring error will occur. (The ERH and RUN indicators on
the Special I/O Unit will be lit.) If the PLC Setup is set to disable cyclically
refreshing Special I/O Units, use the I/O REFRESH (IORF(097)) or SPEICAL
I/O UNIT REFRESH (FIORF(225)) (FIORF: CJ1-H-R CPU Units only) instruc-
tion in the user program to refresh them.
Item Programming
Console address
Settings Function Related
flags and
words
When set-
ting is
read by
CPU Unit
Word Bit(s)
Cyclic Refresh-
ing of Units 0 to
15
+226 0 to 15 0: Enabled
1: Disabled
Default: 0
These settings determine whether
data will be exchanged between the
specified Unit and the Special I/O
Unit’s allocated words (10 words/
Unit) during cyclic refreshing for Spe-
cial I/O Units.
Turn ON the corresponding bit to dis-
able cyclic refreshing when the Unit
will be refreshed in an interrupt task
by IORF(097), several Special I/O
Units are being used and you don’t
want to extend the cycle time, or the
cycle time is so short that the Special
I/O Unit’s internal processing can’t
keep up.
(Special I/O Units can be refreshed
from the program with IORF(097).)
--- At start of
operation.
Cyclic Refresh-
ing of Units 16
to 31
+227 0 to 15 0: Enabled
1: Disabled
Default: 0
Cyclic Refresh-
ing of Units 32
to 47
+228 0 to 15 0: Enabled
1: Disabled
Default: 0
Cyclic Refresh-
ing of Units 48
to 63
+229 0 to 15 0: Enabled
1: Disabled
Default: 0
Cyclic Refresh-
ing of Units 64
to 79
+230 0 to 15 0: Enabled
1: Disabled
Default: 0
Cyclic Refresh-
ing of Units 80
to 95
+231 0 to 15 0: Enabled
1: Disabled
Default: 0