SATEC EM920 Operation Manual - Manual (Page 65)

Chapter 5 Configuring the EM920
Configuring Communications
EM920 Power Quality and Revenue Meter 65
Display
Label
Parameter Options Default Description
Protocol Communication
protocol
Modbus RTU,
Modbus ASCII,
DNP3,
IEC 62056-21 IEC 62056-21
(COM1)
Modbus RTU
(COM3-4)
The communications
protocol for the port
Interface Port interface RS232, RS485,
IR, GPRS IR (COM1)
GPRS (COM2)
RS485 (COM3-
4) Not changeable;
automatically detected by
the meter
Address Device address Modbus: 1-247
DNP3: 0-65532
IEC 62056-21:
0-65532
1 Device network address
Baud Rate Baud rate COM1: 300-
19200 kbps,
COM2-4: 300-
115.2 kbps
19.2 kbps The port baud rate
Data/Parity Data format
and parity
7E, 8N, 8E 8N 7E data format should not
be used with the Modbus
RTU and DNP3 protocols
Send Delay Response delay 0-1000 ms 5 ms The minimum time after the
last request character is
received to start the
transmission.
Chr.Timeout Character
timeout
0-1000 ms 4 ms The maximum time the line
is allowed to idle before
closing a connection in the
Modbus RTU and DNP3
protocols
The meter automatically detects replaceable communication
modules and does not allow you to change the baud rate and
data format for the Dial-up GSM/GPRS modem.