Endress+Hauser EngyVolt RV12, Руководство по эксплуатации

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EngyVolt RV12 Appendix
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*1) The power factor has its sign adjusted to indicate the nature of the load. Positive for capacitive and
negative for inductive.
2*) There is a user option to select either k or M for the energy prefix.
3*) The same user option as in 2 above gives a prefix of none or k for Amphours
4*) The power sum demand calculation is for import power only.
5*) The negative total system power factor is a sign inverted version of parameter 32, the magnitude is
the same as parameter 32.
6*) There is a user option to select None, k or M for the energy prefix.
11.2.3 Modbus protocol holding registers and EngyVolt set up
Holding registers are used to store and display instrument configuration settings. All
holding registers not listed in the table below should be considered as reserved for
manufacturer use and no attempt should be made to modify their values. The holding
register parameters may be viewed or changed using the Modbus Protocol. Each
parameter is held in two consecutive 4X registers. Modbus Protocol Function Code 03 is
used to read the parameter and Function Code 16 is used to write. Write to only one
parameter per message.
Address
(Register)
Parameter
number
Parameter
Holding register
Modbus start
address Hex
Valid range Mode
High
Byte
Low
Byte
40001 1 Demand time (Δt) 00 00 Read minutes into first demand calculation.
When the Demand Time reaches the Demand
Period then the demand values are valid. ro
40003 2 Demand period (Δt) 00 02 Write demand period: 0, 5, 8, 10, 15, 20, 30
or 60 minutes.
Default: 60 minutes.
Setting the period to 0 will cause the demand
to show the current parameter value, and
demand max to show the maximum
parameter value since last demand reset. r/w
40007 4 System Volts 00 06 289 (3p4w or 1p2w)
500 (3p3w) ro
40009 5 System current 00 08 Valid range 1 to 9 999 A. r/w
40011 6 System type 00 0A 3p4w = 3
3p3w = 2
1p2w = 1 r/w
40013 7 Relay pulse width 00 0C Write relay on period in milliseconds: 60,
100, 200
Default: 200 r/w
40015 8 Password lock 00 0E Write any value to password lock protected
registers.
Read password lock status:
0 = locked
1 = unlocked
Reading will also reset the password timeout
back to one minute. r/w
40019 10 Network parity stop 00 12 Write the network port parity/stop bits for
Modbus Protocol, where:
0 = One stop bit and no parity, default.
1 = One stop bit and even parity.
2 = One stop bit and odd parity.
3 = Two stop bits and no parity.
Requires a restart to become effective. r/w