Omron CS1G/H-CPUxxH Instructions Manual page 848

Basic I/O Unit Instructions
Flags
Precautions
Examples
Name Label
Error Flag ER
An error will occur if words in both the I/O Bit Area (CIO 0000 to CIO 0999)
and the Special I/O Unit Bit Area (CIO 2000 to CIO 2959) are specified for
the same instruction.
I/O refreshing won't be performed for Units for which an I/O table error has
occurred. (CS Series only)
The I/O refreshing initiated by IORF(097) will be stopped midway if an I/O bus
error occurs during I/O refreshing.
When IORF(097) is used in an interrupt task, be sure to disable Special I/O
Unit cyclic refreshing in the PLC Setup. If cyclic refreshing for Special I/O
Units is enabled and I/O refreshing is executed again by IORF(097), a non-
fatal Duplicate Refreshing Error will occur and the Interrupt Task Error Flag
(A40213) will be turned ON.
Refreshing Words in the I/O Bit Area
The following example shows how to refresh 16 words from CIO 0015 to
CIO 0030 when CIO 000000 turns ON.
St
E
Refreshing Words in the Special I/O Unit Bit Area
The following example shows how to refresh 30 words from CIO 2000 to
CIO 2029 when CIO 000000 turns ON.
St
E
Operation
ON if St is greater than E.
ON if the address is out of range for an indirect IR specifi-
cation for St.
ON if the address is out of range for an indirect IR specifi-
cation for E.
ON if St and E are in different memory areas.
With the CS1D CPU Units: ON if the active and standby
CPU Units could not be synchronized.
OFF in all other cases.
St:
I/O refreshing
E:
St:
E:
Section 3-23
I/O Unit
Special I/O Unit
I/O refreshing
827