FUNCTION CHARACTERISTICS
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NA011 - Manual - 05 - 2022
Communication interfaces
Two communication ports are provided:
• RS232 port on the front side for local communication (ThyVisor).
• RS485 port on the rear side for bus communication.
RS232
A simple DIN to RJ adapter can be used; the L10041 cable can be supplied.
The RS232 port has high priority compared with the RS485 port.
If RS232 port is not available on Personal Computer, an USB-RS232 converter must be employed.
[1]
The serial port is the simplest access for setting by means the ThyVisor software.
RS485
Two protocol are implemented:
• ModBus RTU. Modbus is a serial communications protocol. It is a de facto standard communica-
tions protocol in industry, and is now the most commonly available means of connecting industrial
electronic devices also inside electric utilities and substation.
• IEC 60870-5. The IEC 60870-5 suite of protocol is used for communications from master station to
substation, as well within the substation; the IEC 60870-5-103 (Protection equipment) is available
together the Modbus protocol on some version of Pro-n devices (code NA011#xCxx).
Note 1 After installation, the same communication port must be selected to define the ThyVisor parameters (typically COM4, COM5,...).
serial-sch.ai
L10041
TXD
RXD
DTR
GND
4
3
1
2
1
2
3
4
6
7
8
9
5
Female connector
RJ10 Connector
Pin1