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Functions of PCFP
The structure of this part is defined in copy/include element FP$GENERIC. This element
must be included in your program before any copy/include element that defines a
specific function packet. See Figure 2–2.
0 INTERFACE_LEVEL
1 a b c
2 WORK_AREA_SIZE
3 SOFTWARE_LEVEL
4
5 GEN_DATE_TIME
6
7 ERROR_CLASS ERROR_FILE SUB_ERROR_CODE
8 ERROR_CODE
9 AUX_ERROR_CODE
Item Descriptions
INTERFACE_LEVEL
Figure 2–2. Generic Part of the Function Packet
Indicates the level of data structure definitions used for this function. All PCFP
functions initially use a value of FP_INTERFACE_LEVEL_1. As new features are
implemented for a function, it is sometimes necessary to expand the data structures
(function packet, return entries and/or other special return information). When this
occurs, the function packet interface level is increased by 1. The individual function
packet documentation in Sections 3 – 10 describes the most current interface level
for each function that supports interface levels other than FP_INTERFACE_LEVEL_1.
The interface level is changed to ensure compatibility for existing function calls.
Existing programs with older interface levels continue to operate correctly with no
program changes. To use the new features, it is necessary to modify the program to
use the new interface level and the associated new data structures.
It is recommended that new programs and new function calls always use the most
current interface level for each function. Data structures shown in this manual
always correspond to the most current interface level. Data structures for older
interface levels are shown in comments in the associated copy/include elements.
Data Type: unsigned integer
7830 9796–013 2–9