External Opc Server Features; Snmp Features - ABB COM600 series 5.0 Technical Reference Manual

2.4.5.
2.4.6.
22
COM600 series 5.0
Master Protocols (Ethernet) and Applications Technical Refer-
ence Manual
Supported transmission modes:
• Modbus RTU
• Modbus ASCII
Table 2.4.4-1 The function codes supported by Modbus OPC Server
Function code
01
02
03
04
05
06
16
21
The following data formats are supported:
• Bit, one coil, or input status
• Word, one register in IED's memory. The data is used in an unsigned form
• Integer, one register in IED's memory. The MSB bit is used as a sign bit
• Long MSW last, signed 32-bit object, which needs two registers from IED's memory
in lsw-msw order
•
Long MSW first, signed 32-bit object which needs two registers from IED's memory
in msw-lsw order.
•
Float MSW last, floating point type which needs two input registers from IED's
memory in lsw-msw order
• Float MSW first, floating point type which needs two input registers from IED's
memory in msw-lsw order.

External OPC Server features

OPC Data Access is used for continuous, real-time data communication between
PLC/DCS systems and COM600 communicating real-time data from data acquisition
devices such as PLCs to display and interface devices like Web Human-Machine Inter-
faces (WebHMI). OPC DA is also used for inter-process communication in COM600.

SNMP features

The Simple Network Management Protocol (SNMP) is used to manage network con-
nectivity of substation devices in the substation LAN network.
The SNMP OPC Server is intended for providing methods for OPC clients to monitor
network-attached devices.
Description
Read coil status
Read input status
Read holding register
Read input registers
Force single coil
Write single register
Write multiple registers
Write General Reference
1MRS758690
Memory area
00001 - 09999
10001 - 19999
40001 - 49999
30001 - 39999
00001 - 09999
40001 - 49999
40001 - 49999
60001 - 65535