Rockwell Automation 1405-M620 Operating Instructions - Manual (Page 13)

Publication 1405-IN002C-EN-P - November 2004
Bulletin 1405 (M620) Operating Instructions 13
Notes:
•
Registers 0 to 35 contain the named measured values.
•
Registers 18 to 39 represent values as 32 bit DWORD.
•
Registers are organized as “big-Endian”, with first the high-Byte
and then the low-Byte. The transferred bytes are not in a rising
sequence, but the higher register follows after the lower register.
•
Register 40 returns the status of device M620 and status
over/under voltage alarm.
•
Register 41 returns the node address and baud rate.
•
Registers 42 to 49 return diagnostic registers per the Modbus
specifications.
•
Registers 80 and 81 are read/write registers for over/under
voltage parameter.
•
Register 82 is a read/write register for control of M620 functions:
reset I peak, reset E-Counter.
34 68 E3 real energy DWORD
35 70
36 72 Total Power DWORD
37 74
38 76 Total Energy DWORD
39 78
40 80 Status/Alarm WORD
41 82 Baud/Address WORD
42 84 Diagnostic 0 WORD
43 86 Diagnostic 1 WORD
44 88 Diagnostic 2 WORD
45 90 Diagnostic 3 WORD
46 92 Diagnostic 4 WORD
47 94 Diagnostic 5 WORD
48 96 Diagnostic 6 WORD
49 98 Diagnostic 7 WORD
80 100 Under Voltage WORD
81 102 Over Voltage WORD
82 104 Control WORD
Table 6 Modbus Memory Map
Register Byte Low Metered Value Data Type