PROFINET IO
6.3 Metering values, addressing und data traffic
3WA Air Circuit Breaker Communication
58
System Manual, 11/2021, 92310000004-02
Basic type 3
Basic type 3 was implemented according to the LVSG profile of the PROFINET user
organization (PNO) and comprises fourteen data blocks containing metering values. These
are preassigned such that unmodified use is only meaningful with a 3WA circuit breaker with
metering function.
The predefined data blocks cannot be modified.
Byte
Definition
Default
0 / 1
Data block 1
Current in phase 1 (u16)
2 / 3
Data block 2
Current in phase 2 (u16)
4 / 5
Data block 3
Current in phase 3 (u16)
6 / 7
Data block 4
Max. current in phase under highest load (u16)
8 / 9
Data block 5
Current in neutral conductor (u16)
10 / 11 Data block 6
Phase-to-phase voltage L12 (u16)
12 / 13 Data block 7
Phase-to-phase voltage L23 (u16)
14 / 15 Data block 8
Phase-to-phase voltage L31 (u16)
16 / 17 Data block 9
Line-to-neutral voltage L1N (u16)
18 / 19 Data block 10
Line-to-neutral voltage L2N (u16)
20 / 21 Data block 11
Line-to-neutral voltage L3N (u16)
22 / 23 Data block 12
Total power factor (u16)
24 / 25 Data block 13
Active energy import (u16)
26 / 27 Data block 14
Total 3-phase apparent power (u16)
Basic type 4
Basic type 4 comprises four data blocks. These are preassigned such that they are primarily
suitable for use with a 3WA circuit breaker without metering function. The most important
currents of the phases are transferred.
The predefined data blocks cannot be modified.
Byte
Definition
Default
0...3
Data block 1
Current in phase 1 (float)
4...7
Data block 2
Current in phase 2 (float)
8...11
Data block 3
Current in phase 3 (float)
12...15 Data block 4
Max. current in phase under highest load (float)
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