Omron CJ1W-CT021 Operation Manual page 152

Interrupts
General Setting:
m+4
132
All 2 Digital Inputs are assigned in sequential order to consecutive External Inter-
rupt Tasks starting from Digital Input 0. By defining an Offset you determine the
External Interrupt Task number of the (first) External Interrupt Task that is
assigned to Digital Input 0. The remaining Digital Input is assigned to the respec-
tive external interrupt task numbers in increasing order starting from "Offset + 1".
Input
0 (=I0)
1 (=I1)
For example, an Offset of 30 means that Digital Input 0 is assigned to External
Interrupt Task Number 30 and Digital Input 1 to External Interrupt Task Number
31.
15 14 13 12 11 10 9
Since there are 256 External Interrupt Tasks available (numbered 0 to 255), the
Offset can be maximum 252.
Note 1. Multiple interrupts generated at the same time will be queued in FIFO-order
inside the High-speed Counter Unit. If the FIFO-buffer is full the Unit will gener-
ate an error (refer to 5-2-5 "Interrupt FIFO full error" for more information).
2. If the ranges of external interrupt task numbers that are assigned to the Outputs
and the Digital Inputs overlap, the Unit does not generate an error.
External Interrupt
Task Number
Offset
Offset + 1
8 7 6 5 4 3 2 1 0
Interrupt Task Offset (Inputs):
Set between 000 - 252
Section 4-6
(BCD)