ELKOR TECHNOLOGIES INC.
- Page 28 -
MCM
–
USER MANUAL
4.4.
Node Electrical Parameters
The following registers provide basic information about each node/module installed. Each parameter contains 60 entries,
with each entry corresponding to a current input channel. If a node is not installed, or the parameter is not supported by
the installed node type, it will return 0 (for signed and unsigned integers), the null character (for strings), or QNaN (for
floating-point values).
For example, to read the Active Power of channel 5 (the second channel on the node in slot 2), read
registers 0x5108
–
0x5109, which is Offset + (½RegisterLength * (ChannelNumber
–
1)), or in this case,
(3 * (5
–
1)). Because it is a 2-byte register, both 0x5108 and 0x5109 must be read (0x5108 is the
most significant word).
Starting
Offset
Register
Count
Length
(bytes)
Type Description
0x5000
60
4
F
Current (A)
0x5100
60
4
F
Active Power (kW)
0x5200
60
4
F
Power Factor
0x5300
60
4
F
Energy (kWh)
0x5600
60
2+2
U
Secondary CT Ratios.
Each entry contains two values;
a ratio primary and a ratio secondary
0x5700
60
2
U
Phase Compensation