Group value format - Metasys - LIT-12013148 - System Integration - KNX Vendor Integration - 11.0

Network Engine Commissioning for KNX Vendor Integration Application Note
Product
Building Automation Systems > Utilities and Integrations > KNX Vendor Integration
Document type
Application Note
Document number
LIT-12013148
Version
11.0
Revision date
2021-06-18

The KNX integration uses a specific enumeration to extract field values in a compact (raw bitmap) format. It is represented by field point parameter 3. The KNX programmer provides the EIS or DPT type for all groups handled by the Metasys system. Table 1 shows the relationship between the enumeration and the EIS and DPT types.

Note: This enumeration is only a logic association. KNX integration does not implement all EIS and DPT types in detail; only the length of the raw value is required for a correct interpretation.
Table 1. Data point types

Value type

Metasys data type

Type description

EIS type

DPT type

0

-

-

-

-

1

AI, AO

Unsigned Long (32 Bits)

EIS11 Counter (32 bits)

DPT 12

2

AI, AO

Signed Long (32 Bits)

EIS11 Counter (32 bits)

DPT 13

3

AI, AO

Signed Short (16 Bits)

EIS10 Counter (16 bits)

DPT 8

4

AI, AO

Unsigned Short (16 Bits)

EIS10 Counter (16 bits)

DPT 7

5

AI, AO

Float (4 byte)

EIS9 Float (32 bits)

DPT 14

6

AI, AO

Unsigned Byte (8 Bits)

EIS14 Counter (8 bits)

EIS6 Scaling

DPT 5

DPT 5

7

AI, AO

Signed Byte (8 Bits)

EIS14 Counter (8 bits)

DPT 6

8

BI, BO

Boolean (1 Bit)

EIS1 Switching

DPT 1

9

AI, AO

Float (2 byte)

EIS5 Float (16 bits)

DPT 9