Data types are defined at the device and application levels. The device data type is referred to as the MMS data type. The MMS data type is mapped to an application data type.

Data types can be either simple or complex. Simple data types are native to the OMNI environment. Complex data types are divided into either arrays or structures. Complex data types must be created by a user before they can be used in defining data points or variables. Structures are not supported for the DAS for Modicon programmable controllers.

The following sections describe the supported data types and addressing syntax for each of the supported device families.

3.3.1 Modicon Micro 84 Addressing Syntax and Supported Data Types

Table 3-6 shows the structure of a legal address for the Micro 84 family.

Table 3-6 Modicon Micro 84 Address Format

Address Format	MMS Type1	Description
0001 - 0064	BIT	Coils
1001 - 1064 2	BIT	Discrete inputs
3001 - 3004 2	UNSIGNED_16 INTEGER_16	Input registers
4001 - 4032	UNSIGNED_16 INTEGER_16	Holding registers

Table 3-7 shows the structure of a legal address for the Modicon 184 and 384 families.

Table 3-7 Modicon 184 and 384 Address Format

Address Format	MMS Type1	Description
0001 - 0992	BIT	Coils
1001 - 1992 2	BIT	Discrete inputs
3001 - 3999 2	UNSIGNED_16 INTEGER_16	Input registers
4001 - 4999	UNSIGNED_16 INTEGER_16	Holding registers

Table 3-8 shows the structure of a legal address for the Modicon 484 family.

Table 3-8 Modicon 484 Address Format

Address Format	MMS Type1	Description
0001 - 0512	BIT	Coils
1001 - 1256 2	BIT	Discrete inputs
3001 - 3032 2	UNSIGNED_16 INTEGER_16	Input registers
4001 - 4254	UNSIGNED_16 INTEGER_16	Holding registers

Table 3-9 shows the structure of a legal address for the Modicon 884 family.

Table 3-9 Modicon 884 Address Format

Address Format	MMS Type1	Description3
00001 - 00768	BIT	Coils
10001 - 10256 2	BIT	Discrete inputs
30001 - 30256 2	UNSIGNED_16 INTEGER_16	Input registers
40001 - 40864	UNSIGNED_16 INTEGER_16	Holding registers

Table 3-10 shows the structure of a legal address for the Modicon 584 and 984 families.

Table 3-10 Modicon 584 and 984 Address Format

Address Format	MMS Type1	Description
00001 - 08192	BIT	Coils
10001 - 18192 2	BIT	Discrete inputs
30001 - 39999 2	UNSIGNED_16 INTEGER_16	Input registers
40001 - 49999	UNSIGNED_16 INTEGER_16	Holding registers
60000:1 - 69999:10 3	UNSIGNED_16 INTEGER_16	Extended file
000001 - 065535 4	BIT	Coils
100001 - 116384 2	BIT	Discrete inputs
300001 - 365535 2	UNSIGNED_16 INTEGER_16	Input registers
400001 - 465535	UNSIGNED_16 INTEGER_16 FLOAT	Holding registers
600000:1 - 665535:10 3	UNSIGNED_16 INTEGER_16	Extended file