3
Operating mode
This interface can operate in two different ways and they are :
1)
Bridge
: both in raw data mode (transparent) or via ModBus TCP -
selectable.
2)
Logger
: self standing
Bridge with Raw Data
: any protocol can be transported over ETHERNET
without any further manipulation. Modbus over TCP is the way to carry the
Modbus RTU protocol as if it were transmitted on a normal RS485 line
Bridge with protocol ModBus TCP
: the interface expects to receive,
from the master, a frame in ModBus TCP format and converts it into
Modbus RTU to connect devices that are not capable to manage directly
the Modbus over TCP
Logger mode
: the unit is able to operate independently as a Master on
the line RS-485 with ModBus RTU protocol, read to from all the connected
instruments (up to a maximum of 64) energy values and to store them,
ready to be exported as a file or displayed directly in the browser.
The energy values that are read and stored are :
EAP
(Active Positive
Energy kWh +),
ERP
(Reactive Positive Energy kvarh+),
EAN
(Active
Negative Energy kWh-).
In addition to the energy quantities, the logger also stores the value of
RHM
(Run Hours Meter).
In the exported file in .csv format, interface calculates and adds the
PMD
(Average Power – Peak Maximum Demand) on a base of 15 minutes and
adds also a flag variable reporting any possible errors.
N.B.
This mode, automatically excludes the possibility of operating in
"bridge" mode denying any transparent TCP connection to the interface
itself.
StartUp Choose operating
Mode
Bridge
Logger
Eth Raw Data
RS485 Raw Data
Eth ModBus TCP
RS485 ModBus RTU
ModBus RTU
