Endress+Hauser EngyVolt RV15, Руководство по эксплуатации

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EngyVolt RV15 Appendix
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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 (
D
t) 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 ( D t) 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 Read system voltage, VLL for 3P3W,
VLN for others. ro
40009 5 System current 00 08 Write system current, limited to
1 to 9
999 A. Requires password, see
parameter 13
r/w
40011 6 System type 00 0A Write system type
3p4w = 3
3p3w = 2
1p2w = 1
Requires password, see parameter 13 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
40021 11 Network node 00 14 Write the network port node address: 1
to 247 for Modbus protocol.
Default: 1
Valid range 1 to 247.
Requires a restart to become effective.
Note, both the Modbus protocol and
Johnson Controls node addresses can be
changed via the display setup menus. r/w
40023 12 Pulse divisor 00 16 Write pulse divisor index:
N = 2 to 6 in Wh/10
N .
Default: 3
r/w