3 Definition of terms, symbols and abbreviations

3.1 Terms

For the purposes of the present document, the following terms apply:

Modbus Master: software running on a computer or a server as a host to access Modbus Slaves by issuing unicast requests

Modbus Slave/Device: peripheral device that provides a Modbus interface and responds by supplying the requested data to the master, or by taking the action requested in the query

3.2 Symbols

Void.

3.3 Abbreviations

For the purposes of the present document, the following abbreviations apply:

AE Application Entity
CSE Common Services Entity
CSV Comma-Separated Values
IPE Interworking Proxy Entity
SDT Smart Device Template
ASN/MN Application Service Node/Middle Node
MN/IN Middle Node/Infrastructure Node
noDN Non-oneM2M Device Node
RTU Remote Terminal Unit
UDP User Datagram Protocol
PLC Programmable Logic Controller
I/O Input/Output
ASCII American Standard Code for Information Interchange
TCP Transmission Control Protocol
RTU/IP Remote Terminal Unit/Internet Protocol
IP Internet Protocol
MB Modbus
MBP Modbus Plus
HDLC High-level Data Link Control
ADU Application Data Unit
PDU Protocol Data Unit
RS Recommended Standard
MBAP Modbus Application Protocol
PC Personal Computer