Simex SRT-73, User Manual

Page: 35 / 40

User manual - METER SRT-73
5.
Read of the registers 1, 2 and 3 in one message (example of reading a number of
registries in one frame):
ADDR FUNC REG H,L COUNT H,L CRC L,H
01 03 00 01 00 03 54 0B
COUNT L - the count of being read registers (max.16)
The answer:
ADDR FUNC BYTE C DATA H1,L1 DATA H2,L2 DATA H3,L3 CRC L,H
01 03 06 00 0A 00 00 00 01 78 B4
DATA H1, L1 - reg. 01h (10 - displayed value 1.0 ),
DATA H2, L2 - reg. 02h (0 - no errors),,
DATA H3, L3 - reg. 03h (1 - decimal point position 0.0 ).
There is no full implementation of the Modbus Protocol in the device. The
functions presented above are available only.
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Microlectra bv.
Hermanus Boerhaavestraat 6. 3261 ME Oud-Beijerland. Netherlands.
Tel 31(0)186-616290 Fax 31(0)186-610349 www.microlectra.nl info@microlectra.nl