Dnp 3.0 Opc Server Features; Modbus Opc Server Features - ABB COM600 series 5.0 Technical Reference Manual

1MRS758690
2.4.3.
2.4.4.
COM600 series 5.0
Master Protocols (Ethernet) and Applications Technical Refer-
ence Manual

DNP 3.0 OPC Server features

DNP3 (Distributed Network Protocol) is a de-facto communication protocol for commu-
nication between SCADA master stations (control centres), RTUs, protection and control
devices and meters. It is used mainly in electric and water utilities. The COM600 incor-
porates the DNP 3.0 master LAN/WAN for Ethernet based communication with station
devices.
The DNP LAN/WAN OPC Server supports the following features:
• OPC Data Access v. 1.0/2.0
• OPC Alarms and Events specifications v. 1.10
•
IEC 61850 data modeling
•
System supervision:
•
DNP channel communication
•
DNP device communication
• Level of DNP implementation

Modbus OPC Server features

Modbus is a de-facto standard communication protocol used in electrical and industrial
process data exchange between substation devices such as IEDs, meters or PLCs with
COM600.
The Modbus OPC Server is intended for connecting simple Modbus devices like energy
meters and input/ouput modules. As the protocol is based on scanning the state of the
inputs of the device, it depends on the scan rate how short signal transients are registered.
No events or time stamps are supported.
The Modbus messaging service provides a client/server communication between devices
connected on an Ethernet TCP/IP network. This model is based on four types of messages:
request, confirmation, indication, and response.
A system using Modbus TCP/IP can include different types of devices. There can be
ModbusTCP/IP client and server devices connected to an TCP/IP network. There can
also be devices such as bridges, routers and gateways for connections between the TCP/IP
network and a serial line sub-network, permitting connections to Modbus serial line client
and server end devices.
The Modbus OPC Server supports the following features:
• OPC Data Access v. 1.0/2.0
• OPC Alarms and Events specifications v. 1.10
• IEC 61850 data modeling
•
System supervision:
•
Modbus channel communication
•
Modbus device communication
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