Limited mostly by maximum response
time
15
Nr of IEDs / line
Modbus RTU
200
Nr of IEDs
Limited mostly by maximum response
time
15
Nr of IEDs / line
Modbus TCP
200
Nr of IEDs
Limited mostly by maximum response
time
15
Nr of IEDs / line
DNP serial
200
Nr of IEDs
Limited mostly by maximum response
time
15
Nr of IEDs / line
DNP LAN
If I/O count is small, number of IEDs can
be bigger
200
Nr of IEDs
15
Nr of IEDs / line
Table 7.3-2 Impact on process communication
Comments
Impact on process com-
munication
Function
Always included
- 0%
Local process database
- 2%
Mirroring
- 2%
Hot Stand-by redundancy
- 25% when total data update rate to all
NCCs is 50% from the process data
update rate
- 25% - 0%
Gateway / NCC connec-
tions
- 24% when Process display with 1 050
measurement objects in Workplace
- 18% when Process display with 1 050
switching device objects in Workplace
- 4% when Process display with 150
measurement objects in Workplace
- 2% when Process display with 150
switching device objects in Workplace
- 24% - 1%
Process display Work-
place
Per Workplace with Trends with 10
curves on 30 seconds interval logging
- 1%
Trends Workplace with
data logging
38
1MRS756804
MicroSCADA Pro
SYS 600C 1.92
Product Guide
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