RMG TME400-VM, Руководство по эксплуатации

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APPENDIX
Manual TME400-VMF · EN07 · December, 7
th
2020
94
With the file address the index of the archive to be read is selected.
The number of registers of the bytes which are read from an archive entry (number
of bytes = number of registers x 2). The maximum number of registers to be read
is limited to 125 per request.
The following example shows the data to be read in a request:
•
File number: 6 (Event archive, size: 12 Byte per entry)
•
Start index: 7 (Read from index 7)
•
Number of registers: 13
Archive index Modbus register Internal storage address of the TME400
7 1 (Hi) 0 (+ Offset)
1 (Lo) 1 (+ Offset)
2 (Hi) 2 (+ Offset)
2 (Lo) 3 (+ Offset)
… …
6 (Hi) 10 (+ Offset)
6 (Lo) 11 (+ Offset)
8 7 (Hi) 12 (+ Offset)
7 (Lo) 13 (+ Offset)
8 (Hi) 14 (+ Offset)
8 (Lo) 15 (+ Offset)
… …
12 (Hi) 22 (+ Offset)
12 (Lo) 23 (+ Offset)
9 13 (Hi) 24 (+ Offset)
13 (Lo) 24 (+ Offset)
The example shows the reading of two complete event archive entries
(index 7 and 8) and a part archive (2 bytes from index 9). In practice, it makes
sense to request only complete archives. The above case is used exclusively to il-
lustrate the mechanism.