Omron CJ - INSTRUCTIONS REFERENCE MANUAL 07-2009 Reference Manual page 806

Units Refreshed by IORF(097)
Unit position On the CPU rack or an expansion rack (excluding SYSMAC BUS Slave Racks)
Unit Type Basic I/O Units
Special I/O units (CIO words of all special I/O units, including high-density I/O units)
Note The Units that can be refreshed with IORF(097) are not necessarily the same as the Units that can be refreshed with
immediate refreshing specifications (!).
Function
IORF(097) refreshes the I/O words between St and E,
inclusively. IORF(097) is used to refresh words allocated to
Basic I/O Units or Special I/O Units mounted on the CPU
Rack or Expansion Racks. IORF(097) cannot be used to
refresh words in both areas at the same time (i.e., with the
same instruction). Basic I/O Units are allocated words
between CIO 0000 and CIO 0999, and Special I/O Units are
allocated words between CIO 2000 and CIO 2959.
When refreshing words for a Special I/O Unit, always
include the first word allocated to the Unit in the range of
words being refreshed. All words allocated to the Special
I/O Unit will be refreshed even if they are not included in the
refresh range.
For example, a High-speed Counter Unit that is set to unit
number 1 and that uses four unit numbers would be
allocated the 40 words from CIO 2010 to CIO 2049. To
refresh words allocated to this Unit, CIO 2010 must be
specified in IORF(097). All words from CIO 2010 to
CIO 2049 will be refreshed.
S1
S2
Hint
The following table shows how IORF(097) differs from FIORF(225) and DLNK(226).
Instruction
IORF(097) • I/O refreshing of words used by Basic I/O Units
• I/O refreshing of the CIO words and DM words used by Special I/O Units
FIORF(225) • I/O refreshing of the CIO words and DM words used by a Special I/O Unit
DLNK(226) • I/O refreshing of the CS1 CPU Bus Unit Area in the CIO Area (25 words)
• I/O refreshing of the CS1 CPU Bus Unit Area in the DM Area (100 words)
• Refreshing of data specific to the CPU Bus Unit, such as data link data or DeviceNet Remote I/O Communications data
CS/CJ/NSJ Series Instructions Reference Manual (W474)
CS series Basic I/O Units
C200H Basic I/O Units (CS Series only)
C200H Group-2 High-density Basic I/O Units (CS Series only)
CJ-Series Basic I/O Units
2000 + Unit number
IORF
CIO 2010
Special I/O
Unit Area
2010
2049
CIO 2049
I/O bit area or
Special I/O Unit bit area
St
E
Special I/O Unit
10
(unit number 1)
Operation
3. Instructions
Refreshable by FIORF(255)
Yes
Yes
Yes
Yes
Yes
I/O Unit or
Special I/O Unit
I/O refreshing
769
3