E-Mon E-PS-A-RTU-N - Manual (Page 45)

Chapter 3 Display
O P E R A T I O N S M E N U O P E R A T I O N S
PowerSmart+ Advanced Power Quality Meter 45
Communication Ports Communication Ports Communication Ports Communication Ports
These two menus allow you to configure parameters for communication ports
COM1 and COM2. To enter the menu, select “Prt.1” for COM1 or “Prt.2” for COM2
from the main menu, and then press the ENTER button.
To select a setup option:
Press the SELECT button to activate the middle window.
Use the UP and DOWN arrow buttons to scroll to the desired option.
To change the option:
Press the SELECT button to activate the lower window.
Use the UP and DOWN arrow buttons to select the desired option.
Press ENTER to confirm your changes and to store your new setting, or press ESC to
discard changes.
To exit the menu, press ESC.
The following tables list available port options.
COM1 Settings
Label Parameter Options Default Description
Prot Communications
protocol rtu = Modbus RTU
ASCII=Modbus ASCII
dnP3 = DNP3
1
Modbus
RTU The communications
protocol supported by
the port
rS Port interface 1 232 = RS-232
485 = RS-485
422 = RS-422
dial = Dial-up Modem
Eth.= Ethernet
Depends
on the
order For non-serial interfaces
- not changeable;
automatically detected
by the meter
Addr Device address Modbus: 1-247
DNP3: 0–65532 1 Device network address
bAud Baud rate 300-115200 bps 19200 bps The port baud rate
dAtA Data format and
parity 7E, 8N, 8E 8N 7E data format should
not be used with the
Modbus RTU and DNP3
protocols
H.Sh Handshaking
(flow control) nonE=no flow control
SOFt=software
(XON/XOFF)
HArd=hardware (CTS)
None
rtS RTS mode nonE = not used
Forc = RTS is
permanently asserted
CtrL = RTS is asserted
during the
transmission None
1 Selecting the DNP3 protocol on the Ethernet port launches the DNP3/TCP server along
with the Modbus/TCP server allowing simultaneous connections on both TCP ports.
Selecting the Modbus protocol for the port disables the DNP3/TCP server.
The meter automatically detects a replaceable communication module and does not allow
you to change the interface, baud rate or data format for the Dial-up modem, and for the
Ethernet port.
Prt.1
rtu
Prot