Micromod Micro-PWC: 53PW6000 MicroPWC Configuration Guide Manuale Utente Scaricare il pdf (Pagina 256)

Micro-PWC CONFIGURATION GUIDE

236 Historical Database

Data Type When manual data points are configured, the user can define a data type for

the manually entered data. Available data types include:

• Numerical

• Alphanumerical (32 characters)

• Alphanumerical (64 characters)

• Alphanumerical (128 characters)

• Alphanumerical (256 characters)

• Alphanumerical (512 characters)

Event Bit Event bits are a set of 4,096 group wide event flags which can be set to indi-

cate that an event has occurred. Event bits can be addressed by name (refer

to Section 2.8.2, Event Bit Configuration, for details on event bit name assign-

ment) or number. Assignment of an event bit in the historical database allows

the data to be collected when the condition indicated by the event bit occurs.

Historical

Database

Tagname

Tagname used to identify the point in the historical database. It can be up to 37

characters in length, cannot contain spaces, and must be unique on the net-

work. If no historical database tagname is configured, it will default to the tag-

name of the associated server database point.

Storage Rate Defines the number of collections which will occur before a value is actually

stored in the historical database; it is a multiple of the collection rate, i.e., if a

point has a collection rate of one second and a storage rate of 10, then only

data for every tenth collection would actually be stored in the historical data-

base. The default storage rate is 1.

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Micromod Micro-PWC: 53PW6000 MicroPWC Configuration Guide Manuale Utente Pagina 256