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Execution:
"n" words of data starting with the address "S2" on the CPU will be written to the area starting with the
address specified by "D" on the memory in the advanced unit specified by "S1".
The special relays and special data register are used for writing data to the memory in order to check the
execution status due to the following reasons. While a memory access instruction is being executed, this
instruction cannot be executed.The read data send request is executed only by this instruction.The write
operation will be executed when the end(ED) instruction is executed.
Special relays and special data register used for checking the execution status
Description
RMRD/RMWT instruction
executable flag
RMRD/RMWT instruction end flag
RMRD/RMWT instruction end code
* The memory access instruction is being executed.
Flag operation
In the following cases, the error flags (R9007, R9008) will turn on.
1) When the data specified by S1+1 and S1 exceeds the limit.
2) When there is no master station.
3) When an address modifier error occurs.
4) When the write area exceeds the limit.
Note:
The error code stored in DT9036(DT90036) are as follows.
Code (HEX)
Description
5B
Time-out error: No destination exists and the state with no communication is
H
continuing.
68
Access area missing error: Specified memory access area does not exist in the unit on
H
slave station.
71
Response signal from a send operation cannot be received.
H
72
Buffer of the master unit is full.
H
73
Response command cannot be received.
H
When errors 71
, 72
, 73
H
H
changed in 10 ms to 81.9 s by the system register No. 32. The defautl setting for FP3 is 2 s, and the one
for FP2/FP2SH/FP10SH is 10 s.
Relay number
R9035
R9036
DT9036
(DT90036)
occur, the time-out error may occur. The set value of the time-out can be
H
Description
0: Not executable (*)
1: Executable
0: Normal end
1: Abnormal end
0: Normal end
Other than 0: Abnormal end code
8-7
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Troubleshooting
