Siemens UL 489, Operating Instructions Manual, Page: 173 / 352

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Changing the communication parameters
The communication parameters of the COM16 module can be changed by writing the required parameters (baud rate, serial configuration
and Modbus RTU communication address) in data set 160.
Note: Registers not listed are reserved.
For details on data formats and properties, see "SENTRON WL VL circuit breakers with communication capability MODBUS" manual.
Dataset 160 Communication Parameters
Address: A000 hex, Registers: 36, Access: Read / Write
Register Byte
HIGH/
LOW
Byte
Description
Data
point
Source
WL
Source
VL
1
Source
VL
2
Format Length Scaling
40960 0 Header; value 0x00 00 00 00 — COM16 COM11 COM21 — 32 —
40962 4 HIGH Reserved — — — — — 8 —
5 LOW Modbus RTU address 5 COM16 COM11 COM21 Unsigned char 8 0
40963 6 HIGH Basic data type (1, 2 or 3) 6 COM16 COM11 COM21 Unsigned char 8 —
7 LOW Reserved — — — — — 8 —
40964 8
Changeable data points in the
basic data
7 COM16 COM11 COM21 Unsigned char 224 —
40984 48 HIGH Modbus baud rate 427 COM16 COM11 COM21 Unsigned char 8 —
49 LOW Modbus parity 428 COM16 COM11 COM21 Unsigned char 8 —
40994 68 HIGH Property for Byte 49 — COM16 COM11 COM21 Property byte 8 —
69 LOW Property for Byte 48 — COM16 COM11 COM21 Property byte 8 —
40995 70 HIGH Reserved — — — — Property byte 8 —
71 LOW Property for Byte 5 — COM16 COM11 COM21 Property byte 8 —
40996 72 HIGH Property for Byte 6 — COM16 COM11 COM21 Property byte 8 —
73 LOW Reserved — — — — Property byte 8 —
40997 74 HIGH Property for Byte 8 — COM16 COM11 COM21 Property byte 8 —
75 LOW Reserved — — — — Property byte 8 —
78 Total Bytes