TECHNICAL NOTE
MOTION APPLICATION ENGINEERING GROUP
Yaskawa Electric America - 2121 Norman Drive South – Waukegan IL 60085
(800) YASKAWA - Fax (847) 887-7280
11/23/2005 26 of 26 eng/05.055/MCD
Symbol naming & commenting conventions
Purpose of naming convention
The purpose of using the symbol naming convention is to increase overall ease-of-use.
Establishing a symbol convention that is easily understood and works well with the MotionWorks
Symbol Manager makes sorting and a viewing of symbols easy-to-do and maintains the
robustness of the program.
e.g.
Symbol Comment
Axis###X_Velocity [counts/sec]
X would be replaced by the first letter of the register type for that symbol:
B – bit type
W – word type
L – long type
F – float type
A – address pointer type
Recommendations
Symbol names should be written so their function is clearly understood and easy to sort in
MotionWorks. Below are some examples:
Symbol Comment
Axis001L_Position [counts/sec]
HMI_IndexCount [number of indexes]
Machine_BeltLength [inches]
Supervisory_Estop [normally closed]
Tag naming convention for ease of searching and programming.
• Use real world names for easy to follow programs.
• By putting units in comments, this displays in ladder elements, again for ease of
understanding program.
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