Siemens SIMATIC TIWAY 1 Manual de usuario descargar pdf (Pagina 67)

NIM Primitives

4-14

SIMATIC TIWAY I Series 500 NIM User Manual

4.6 Data Element Types and Formats

The data element types (TTs) and their length (in bytes) are defined in

Table 4-4. Figure 4-4 through Figure 4-15 show the format of the data

elements.

Table 4-4 Data Element Types and Formats

TT Data Element Type

Length

(in bytes)

0 Instruction Memory (L) 2

1 Variable Memory (V) 2

2 Constant Memory (K) 2

3 Discrete Input (X) 1

4 Discrete Output (Y) 1

5 Control Register (CR) 1

6 Discrete Input Packed (X) 1

7 Discrete Output Packed (Y) 1

8 Control Register Packed (CR) 1

9 Word Input (WX) 2

A Word Output (WY) 2

B XY Force 1

C CR Force 1

D Word Force 3

E Timer-Counter Preset (TCP) 2

F Timer-Counter Current (TCC) 2

10 Drum Step Preset (DSP) 1

11 Drum Step Current (DSC) 1

12 Drum Count Preset (DCP) 2

17 Secondary System Status* 4

** 20 or 60 Loop Gain 4

** 21 or 61 Loop Reset 4

** 22 or 62 Loop Rate 4

** 23 or 63 Loop High Alarm 4

** 24 or 64 Loop Low Alarm 4

** 25 or 65 Loop Process Variable 4

* These TT types are read-only data elements.

# This TT type is a write-only data element.

** Format

2x, 3x, and 4x = IBM format

6x, 7x, and 8x = IEEE format

1 2 ... 62 63 64 65 66 67 68 69 70 71 72 ... 137 138

Sin comentarios

Siemens SIMATIC TIWAY 1 Manual de usuario Pagina 67