Specifications

App - 76
Appendix 8.4 Interrupts by the special link device (SB/SW)
The designated interrupt sequence program can be executed when the conditions of the
control information (SB/SW) during data linking is satisfied.
In the example below, designate the interrupt setting parameters for station number 15
so that the interrupt program is started when SB49 turns on (data link error occurred).
[Interrupt setting parameters]
Device
code
Device
No.
Detection
method
Interrupt
condition
Word device
setting value
Channel
No./connection No.
Interrupt (SI)
No.
LB 49
Edge
detection
ON — —
[Interrupt pointer settings]
CPU side Intelligent module side
Interrupt pointer
start No.
Interrupt pointer
count
Start I/O No. Start SI No.
51 1 0000 0
CPU
Network module
Station No. 3
Network module
Station No. 15
CPU
Network No. 7
Reception
processing
IRET
I51
SB49
SB49
Data link error
SB
SM400
REMARK
(1) When the sequence program executes at high speed, the scan time may take
longer because the execution time of the interrupt program affects the
performance of the interrupt program.
(2) When multiple interrupts occur at the same time, the operation delay may occur.
(3) This function cannot be used during offline or online testing.