Computer Expressions 40CG Instrukcja Użytkownika Pobierz pdf (Strona 80)

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4.6

4.6 POINT-DATA TRANSFERS USING DATA TABLES

The following group of data-transfer messages require the use of previously built and

converted Internal Data Tables (Internal DDT). See paragraph 4.5 for descriptions of the

messages used in Internal DDT preparation, and for table format and content.

4.6.1 Get Data Request (Internal DDT in CG)

This message from the host processor is used when a copy of the Internal DDT is kept by

the CG (see paragraph 4.5.3).

Eight-Character Tagname Form

Header information: Word 1—Transaction Code = 3

Word 2—Number of Words = 10

Word 5—CG Identifier = 2

Message format: Words 1..4—ACIDP name or blank (8 ASCII characters)

Word 5—data access priority (integer) 1=control

2=noncontrol

Words 6..10—Internal DDT name (9 ASCII characters followed

by a blank character)

Use information: The referenced Internal DDT must be previously created

(messages 6 and 9) and stored in the CG database (messages 10

and 12) with no errors reported.

Sixteen-Character Tagname Form

Header information: Word 1—Transaction Code = 103

Word 2—Number of Words = 19

Word 5—CG Identifier = 2

Message format: Words 1..8—ACIDP name or blank (16 ASCII characters)

Words 9..13—reserved for future use

Word 14—data access priority (integer) 1=control

2=noncontrol

Words 15..19—Internal DDT name (9 ASCII characters followed

by a blank character)

Use information: The referenced Internal DDT must be previously created

(messages 106 and 9) and stored in the CG database (messages 10

and 12) with no errors reported.

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Computer Expressions 40CG Instrukcja Użytkownika Strona 80