Mitsubishi L26CPU-BT, Руководство пользователя, Страница: 190 / 450

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9. DEDICATED INSTRUCTIONS AND PROGRAMMING
(c) There are two types of interlock signals for the G(P).RIRD instruction: the
completion device (D2) and status display device at completion (D2) + 1.
1) Completion device
Turns ON in the END processing of the scan where the G(P).RIRD
instruction is completed, and turns OFF in the next END processing.
2) Status display device at completion
Turns ON and OFF depending on the completion status of the
G(P).RIRD instruction.
Normal completion : Stays OFF and does not change.
Abnormal completion: Turns ON in the END processing of the scan
where the G(P).RIRD instruction is completed,
and turns OFF in the next END processing.
Program
END processing END processing
G(P).RIRD instruction
ON
OFF
Completion device
OFF
Status display device
at completion OFF
ON
ON Abnormal
completion
Normal completion
1 scan
Execution completion of
the G(P).RIRD instruction
END processing END processing
(d) Multiple dedicated instructions cannot be executed for the same station.
Since it takes several scans until the processing of the dedicated instruction
is completed, execute the next dedicated instruction after the completion
device has turned ON.
The next dedicated instruction executed before completion of the previously
executed dedicated instruction is ignored.
(e) The basic number of steps of the G(P).RIRD instruction is 8 steps.
(f) The receive buffer assignment is performed in "Station Information Setting"
of Network Parameter of GX Works2. For more details on setting, refer to
Sections 7.2.2, 7.3.2 and 7.4.2.
(4) Operation error
In the following cases, an operation error occurs; the error flag (SM0) turns ON
and the error code is stored in SD0.
Error code Description of operation error
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.
4100 When the instruction contains the data that cannot be used.
4101
When the number of data set to be used exceeds the allowable range.
Or, when the storage data or constants of the device specified with the instruction
exceeds the allowable range.