188
The following are the timing charts for the SP.READ instruction:
• When completed normally
• When completed with an error
1 scan
100
100
READ
Sequence program
Read command
CPU module
on the host station
CPU module
on another station
OFF
OFF
OFF
OFF
ON
ON
OFF
Completion device
(Device specified in D2 )
Completion status
indication device
(Device of D2 +1)
Read data storage device
(Device specified in D1 )
Sequence program
Read data storage device
(Device specified in S2 )
END
0
END
0
END
0
END
0
END
0
END
0
END
0
END
0
END
0
END
0
1 scan
Error code
READ
Sequence program
Read command
CPU module
on the host station
Completion device
(Device specified in D2 )
Completion status
indication device
(Device of D2 +1)
Completion status
(Device of S1 +1)
END
0
END
0
Target error
END
0
END
0
END
0
OFF
OFF
OFF
OFF
OFF
ON
ON
ON
OFF
Summary of Contents for melsec q03ud(E)cpu
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Page 209: ...207 APPENDICES A Appendix 4 Specifications Comparison with Ethernet Module Memo ...
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