Data Modules

The LTMT main unit supports different data modules. Based on the requirement, one of the available data modules can be selected.

The input data in the data module can be configured using a PC running the TeSys Tera DTM embedded in a FDT container, such as SoMove software. The available data modules are described in the following table:

Module name	Input data size (bytes)	Output data size (bytes)
Module 1: 4B-OUT 2W-IN	4	4
Module 2: 4B-OUT 4W-IN	8	4
Module 3: 4B-OUT 5W-IN	10	4
Module 4: 4B-OUT 6W-IN	12	4
Module 5: 4B-OUT 8W-IN	16	4
Module 6: 4B-OUT 10W-IN	20	4
Module 7: 4B-OUT 12W-IN	24	4
Module 8: 4B-OUT 16W-IN	32	4
Module 9: 1W-IN	2	0
Module 10: 2W-IN	4	0
Module 11: 3W-IN	6	0
Module 12: 4W-IN	8	0
Module 13: PKW	18	10

Table Format

The PROFIBUS DP data tables have the following columns:

Byte offset

Size (in bytes)

Byte.Bit

Unit

Type

Parameter name

Designation	Description
Byte offset	Number of bytes from the index.
Size (in bytes)	Number of bytes that need to be read or written to access the complete information.
Byte.Bit	Number of the bit in a byte, for boolean data only.
RW	Whether the data is read only (R) or read-write (RW).
X	Scale factor: A scale of 1 means that the value of the data is the right one with the unit indicated. A scale of 10 means that the data contains the value multiplied by 10. The actual value is therefore the value of the data divided by 10. A scale of 0.1 means that the data contains the value multiplied by 0.1. The actual value is therefore the value of the data multiplied by 10.
Unit	Unit of the value, only for integer data types.
Type	Coding data type (see Data Types table below).
Parameter name	Information about the data and the restrictions that apply.

Data Types

Name	Description	Range
INT16	16-bit signed integer (1 word)	-32768...+32767
UINT16	16-bit unsigned integer (1 word)	0...65535
UINT32	32-bit unsigned integer (2 words)	0...4 294 967 295
UINT64	64-bit unsigned integer (4 words)	0...18 446 744 073 709 600 000
BOOL	1-bit data	0–1
BITMAP	16–bit field (1 word)	–

Example of Endianness

Data Type	Value	Value in Hexadecimal	Big-endian	Little-endian
UINT16/INT16	1000	03E8	03 E8	E8 03
UINT32/INT32	70000	00011170	00 01 11 70	70 11 01 00
UINT64/INT64	100000	00000000000186A0	00 00 00 00 00 01 86 A0	A0 86 01 00 00 00 00 00