Discrete Data Element Format; Data Element Types And Formats - Siemens SIMATIC TIWAY 1 User Manual

Data Element Types and Formats (continued)
4-16 NIM Primitives
Table 4-4 Basic Data Unit Format (continued)
TT
** 43 or 83
** 44 or 84
45
46
** 47 or 87
** 48 or 88
** 49 or 89
** 4A or 8A
* 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
NOTE: See Appendix B for a definition of TT 2x, 3x, 4x, 6x, 7x, and 8x
floating point representation.
Figure 4-4 Discrete Data Element Format
Data Element Type
Analog Alarm Sample Rate
Analog Alarm Setpoint
Analog Alarm Variable Flag*
Analog Alarm Control Flag
Analog Alarm Error*
Analog Alarm P.V. High High Alarm
Analog Alarm P.V. Low Low Alarm
Analog Alarm Rate of Change Alarm
SIMATIC TIWAY I Series 500 NIM User Manual
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