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(2) Operation error
In the following cases, operation error occurs; the error flag (SM0) turns ON and the error code is stored in SD0.
Error code
When the module specified by Un is not an intelligent function module.
2112
When the module specified by Un is not a special function module.
4002
When an attempt was made to execute an unsupported instruction.
4003
When the number of devices in the instruction is incorrect.
4004
When the instruction specifies a device that cannot be used.
When the setting for number of points to read (n3) is outside of the setting range.
4100
When the station number specified with n1 does not exist.
(3) Program example
Programmable controller CPU
Device memory
When X0 is turned ON, the following example program reads 10-word data to D0 or succeeding addresses from
the automatic update buffer offset value of 100 (400
(When the link special register (SW) refresh device is set to SW0000)
CHAPTER 9 DEDICATED INSTRUCTIONS AND PROGRAMMING
Description of operation error
Master module
(Start I/O number 40H)
Automatic update buffer
of the intelligent device station) in the master module.
H
Intelligent device station
(Station number 1)
Buffer memory
300H
Automatic update
buffer memory
5FFH
Dedicated instruction
execution
9
217
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Troubleshooting
