Functions - YASKAWA JEPMC-MP2300-Y Series User Manual

5 Outline of Motion Control Systems

5.2.6 Functions

5.2.6 Functions
( 1 ) Standard System Functions
Type
Counter
First in/first out
Trace function
Data trace read
Inverter trace read function
Message send
Message receive
( 2 ) User Functions
5-20
Functions are executed by calling them from parent, child, or grandchild drawings using the FSTART
command.
Functions can be called from any drawing, and the same function can be called at the same time from
different types of drawings and from different levels of drawings. Another completed functions can
also be called from functions.
Using functions has the following advantages.
• Easier creation of user program components
• Easier writing and maintenance of user programs
Functions include standard system functions that are already in the system and user functions that are
defined by the user.
The transmission and other functions listed below are already created as standard system functions.
Standard system functions cannot be changed by users.
Name Symbol
COUNTER
FINFOUT
TRACE
DTRC-RD
ITRC-RD
MSG-SND
MSG-RCV
The functions (programs) and the function definitions can be changed (programmed) freely by users.
The maximum number of user functions that can be defined is 500 drawings.
Refer to the following manual for information on defining functions.
Machine Controller MP900/MP2000 Series User's Manual Ladder Programming (SIEZ-C887-
1.2 )
Machine Controller MP900/MP2000 Series User's Manual Motion Programming (SIEZ-C887-
1.3 )
Machine Controller MP900/MP2000 Series New Ladder Editor Programming Manual (SIEZ-C887-
13.1 )
Machine Controller MP900/MP2000 Series New Ladder Editor User's Manual (SIEZ-C887-
13.2 )
Contents
Incremental/decremental counter
First in/first out
Data trace execution control
Reads data from data trace memory to user memory
Reads trace data from inverter trace memory to user memory
Sends messages to external communication devices
Receives messages from external communication devices