YASKAWA MP2200 User Manual page 161

( 3 ) Functions
Functions are executed by calling them from parent, child, or grandchild drawings using the FUNC 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.
[ a ] Standard System Functions
The transmission and other functions listed below are already created as standard system functions. Standard system
functions cannot be changed by users.
Type Name
Counter
First in/first out
Trace function
Data trace read
Inverter trace read function
Message send
Message receive
[ b ] 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 manual 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 Motion Programming
(manual no.: SIEP C880700 38)
• Machine Controller MP900/MP2000 Series New Ladder Editor User's Manual Programming
Instructions
(manual no.: SIEZ-C887-13.1)
• Machine Controller MP900/MP2000 Series New Ladder Editor User's Manual Operation
(manual no.: SIEZ-C887-13.2)
• Engineering Tool for MP2000 Series Machine Controller MPE720 Version 6 User's Manual
(manual no.: SIEP C880700 30).
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
5.2 User Programs
5.2.2 Ladder Program
Contents
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