Functions - YASKAWA MP210 Series User Manual

5 Outline of Motion Control Systems

5.2.6 Functions

5.2.6 Functions
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.
(1) Standard System Functions
The transmission and other functions listed below are already created as standard system functions. Standard sys-
tem functions cannot be changed by users.
Type
System
functions
(2) User Functions
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 manuals for information on defining functions.
Machine Controller MP900/MP2000 Series User's Manual Ladder Programming
(Manual No.: SIEZ-C887-1.2)
Machine Controller MP2000 Series User's Manual for Motion Programming
(Manual No.: SIEP C880700 38)
Machine Controller MP900/MP2000 Series New Ladder Editor Programming Manual
(Manual No.: SIEZ-C887-13.1)
Machine Controller MP900/MP2000 Series New Ladder Editor User's Manual
(Manual No.: SIEZ-C887-13.2)
5-22
Name
Counter
First in/first out
Trace function
Data trace read
Inverter trace read
function
Message send
Message receive
Symbol
COUNTER Incremental/decremental counter
FINFOUT First in/first out
TRACE Data trace execution control
DTRC-RD Reads data from data trace memory to user memory
ITRC-RD Reads trace data from inverter trace memory to user memory
MSG-SND Sends messages to external communication devices
MSG-RCV Receives messages from external communication devices
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