Technical data

Table Of Contents
System Software for S7-300/400 System and Standard Functions - Volume 2/2
A5E00739858-01
31-1
31 Plastics Techology
31.1 SFC 63 (AB_CALL)
Description
SFC 63 (AB_CALL) calls an assembly code block.
Assembly code blocks are logic blocks that were written in the programming
language "C" or in Assembler and then compiled.
Application
You can only use assembly code blocks for the CPU 614.
Further Information
The meaning of the individual parameters of SFC 63 is explained in detail in the
documentation for the CPU 614. There is a separate programming guide for
programming assembly code blocks.
Parameters
Parameter Declaration Data Type Memory Area Description
AB_NUMBER INPUT WORD I, Q, M, D, L,
constant
Bits for the assembly code blocks to
be called
CALL_REASON INPUT WORD I, Q, M, D, L,
constant
Organization block in which the SFC
was called or evaluation of the DB
pointer (parameter DB_NUMBER) or
activation of the debugger
DB_NUMBER INPUT WORD I, Q, M, D, L,
constant
Number of the DB pointer
RET_VAL OUTPUT WORD I, Q, M, D, L Return value of the SFC