IEC 60870-5-101 and IEC 60870-5-104
Functions
For default values for the addresses of the information objects refer to "Tab. 27: Information
objects".
Object / Function
State / Value range
Pre-set object
address
ASDU data type
System – Warning
OFF: normal state
ON: Warning imminent
1
1
(Single message)
System – Alarm
OFF: normal state
ON: Alarm imminent
2
1
(Single message)
(Input)
OFF: open
OFF: -25 … 0 V
ON: 3 … 25 V
3
1 / 15
(Single message /
counter)
(output)
OFF: -2.5 … -5 V
ON: 2.5 … 5 V
max. 5 mA
4
1
(Single message)
(output)
OFF: -2.5 … -5 V
ON: 2.5 … 5 V
max. 5 mA
5
1
(Single message)
Link state interfaces
OFF: no link
ON: link
from 128
1
(Single message)
Speed interfaces
Value in bps
>= 2147483648: value
is invalid
from 160
7
(Bit pattern 32 bit)
Signal quality inter-
faces
16,0 dB >= value 160
>= 8388608: value is
invalid
from 192
11
(Measured value,
scaled)
Port state interfaces
0x: Port blocked
1x: Port learns and
blocked
2x: Port forwards
x0: Port is deactivated
x1: Port roll is Root
x2: Port roll is Desig-
nated
x3: Port roll is Alter-
nate
x4: Port roll is Backup
x5: Port roll is Master
from 224
5
(Level setting mes-
sage)
Table 27:
Information objects
66
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