7M User’s Manual 29
Starting Register Register Count CRC
Slave Address Function Code HI LO HI LO LO HI
21 04 06 6B 00 02
Register Data CRC
Slave Address Function Code Byte Count HI LO HI LO LO HI
21 04 06 6B FE 00 59 96
Request frame
Response frame
Request-response cycle example
Address number of slave: 21
Function code: 04 --> 30000
Starting register HI…LO: 00…6B
(16)
--> 107
(10)
+30000
(10)
= 30107
(10)
(Meaning that actual measurement is U1. For further informations see REGISTER TABLE FOR THE ACTUAL MEASUREMENTS.)
Register count HI…LO: 00…02
(16)
--> 2
(10)
(Two registers: 30107 and 30108)
Data type: T5 (Unsigned Measurement (32 bit) – see table of DATA types decoding)
Register data: FE 00 59 74
(16)
--> 22934 * 10
−2
V = 229,34 V
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