Functional Overview; Modbus Serial Slave Opc Client Features - ABB COM600 series User Manual

2.3.
2.4.
14
COM600 series, Version 5.1
Modbus Serial Slave (OPC) User's Manual
•
COM600F is a dedicated distribution automation controller unit that runs dis-
tributed grid and feeder applications for ANSI power networks and inherits all
core features of the COM600 series.

Functional overview

The Modbus protocol slave interface of COM600 enables master systems communicating
with Modbus protocol to:
• receive data from P&C devices
• deliver commands to P&C devices connected to the Gateway.
The Modbus slave is implemented as an OPC client, which transfers and converts data
between the Modbus slave protocol interface and the OPC servers of COM600. For more
information, see COM600 User's Manual.
The Modbus Serial Slave OPC Client is configured using SAB600. SAB600 can also
be used for diagnosing and controlling the operation of the Modbus Serial Slave OPC
Client. COM600 has a web server that can be used for remote diagnostic of the Gateway
including the Modbus Serial Slave OPC Client.
The Modbus Serial Slave OPC Client uses TCP/IP communication over the Serial
interface. Before you can start using the Modbus Serial Slave OPC Client, configure at
least one OPC server to provide access to the process devices. In this user's manual, the
term "Modbus Serial IED" is used for a virtual station in COM600 representing the slave
stations visible to the Modbus master system.

Modbus Serial Slave OPC Client features

The Modbus Serial Slave OPC Client supports the following features:
• OPC Data Access Client v. 1.0/2.0 for accessing data from the OPC servers
• OPC Alarms and Events specifications v. 1.10 for diagnostic and control purposes
• IEC 61850 data modeling
•
System supervision:
•
NCC connection supervision
Table 2.4-1 Supported function codes
Function Code
01
03
05
06
16
Description
Read Coil Status
Read Holding Register
Force Single Coil
Write Single Register
Write Multiple Registers
1MRS756913
Memory Area
00001 - 09999
40001 - 49999
00001 – 09999
40001 – 49999
40001 - 49999