Siemens UL 489 Operating Instructions Manual page 176

Basic Data Types
Basic data types 1, 2 and 3 are supported. Basic data type 1 is the default setting. Basic data type 1 consists of 7 registers,
basic data type 2 consists of 13 registers and Basic data type 3 consists of 22 registers.
Basic data is accessed using the function:
04 Read Input Registers - Reads the Basic Data including the Status Register
Basic Data Type 1 Registers and Default Data Points
Register Byte Name
1 0, 1 Status Register
2 2, 3 Data Block 1
3 4, 5 Data Block 2
4 6, 7 Data Block 3
5 8, 9 Data Block 4
6 10 Block 1 property byte
11 Block 2 property byte
7 12 Block 3 property byte
13 Block 4 property byte
9 – 74
Default Data Point – WL
WL status bits
Phase L1 current
Phase L2 current
Phase L3 current
Current in phase under highest load
Property byte of phase L1 current
Property byte of phase L2 current
Property byte of phase L3 current
Property byte of max current in phase under highest load