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XCALL
(2) Operation of XCALL instruction varies according to the CPU module type. The following
program example shows the operation of XCALL instruction for each CPU module.
[Program example]
[ON/OFF timing of X0]
*2: Time during X0 is ON(2)) does not include the time when turning X0 ON (1)).
Component Operation of XCALL instruction
•Process CPU
(serial No. of first 5 digits : 07031 or earlier)
• High performance model QCPU
(serial No. of first 5 digits: 06081 or earlier.)
1) When X0 is turned ON: Without process (Do not execute subroutine program of "P1".)
2) During X0 is ON: Execute subroutine program of "P1".
3) When X0 is turned OFF: Perform "Non-execution processing" of subroutine program of "P1".
• High performance model QCPU
(serial No. of first 5 digits: 06082 or later.)
•Process CPU
(serial No. of first 5 digits : 07032 or later)
1) Using SM734 (XCALL instruction executing condition designation) to select operation when
X0 is turned ON.
• When SM734 is OFF: Without process (Do not execute subroutine program of "P1".)
• When SM734 is ON: Execute subroutine program of "P1".
2) During X0 is ON: Execute subroutine program of "P1".
3) When X0 is turned OFF: Perform "Non-execution processing" of subroutine program of "P1".
• Redundant CPU
• Basic model QCPU
• Universal model QCPU
•LCPU
1) When X0 is turned ON: Execute subroutine program of "P1".
2) During X0 is ON: Execute subroutine program of "P1".
3) When X0 is turned OFF: Perform "Non-execution processing" of subroutine program of "P1".
P1 subroutine program
Subroutine program (P1)
call by XCALL instruction
X0
OFF
(1) Turning X0 ON
(OFF ON)
(2) During X0 is ON
(3) Turning X0 OFF
(ON OFF)
ON
*2
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