
IEC 60870-5-104 Network access for IEC 60870-5-101
IP
Internet protocol
LAN
Local area network
LED
Light-emitting diode
MCB
Miniature circuit breaker
Modbus
A serial communication protocol developed by the
Modicon company in 1979. Originally used for
communication in PLCs and RTU devices.
Modbus ASCII
Link mode using 7-bit ASCII characters
Modbus RTU
Link mode using 8-bit binary characters
NT
Non-topical
NTC
Negative Temperature Coefficient
NTP
Network time protocol
PAP
Password authentication protocol
PIN
Personal Identification Number
RAM
Random access memory
RI
Ring Indicator
RISC
Reduced Instruction Set Computer
RJ-45
Galvanic connector type
RMU
Ring main unit
RS-232
Serial interface standard
RS-422
Serial communication standard (EIA–422)
RS-485
Serial link according to EIA standard RS485
RTS
Ready to send
RTU
Remote terminal unit
RXD
Received exchange data
SCADA
Supervision, control and data acquisition
SIM
Subscriber identity module
SMS
1. Short Message Service
2. Station monitoring system
SNMP
Simple Network Management Protocol
SNTP
Simple Network Time Protocol
TCP
Transmission Control Protocol
TCP/IP
Transmission Control Protocol/Internet Protocol
TXD
Transmit exchange data
Section 15
1MRS758459 C
Glossary
78
ARC600
User Manual