Revision level – Yaskawa MP2000 User Manual
Page 2
 
TECHNICAL NOTE
File: MP2000_IndividualFunctionDocument_RevC 2/168 
Doc Number: 
EF.MCD.05.101
11/17/2005
Revision Level
 
As part of best practices, it is advised to keep track of the revision level of each function 
block for the ease of technical support and maintenance. Each block has a revision 
number that is defined in the first rung of function code. This value must be altered if 
the block is modified. The number is broken into two parts as follows. 
 
 Revision Number format: XXYY 
XX
= Revision by Yaskawa engineering and
registered 
YY
- Revision by Non Yaskawa personnel and
unregistered changes 
 
 
 
 
 
The revision number uses an ‘A’ register to allow the value to be monitored. The 
revision level can be determined by looking at the last word from the base address 
including the base address, the revision can be seen. 
 
If it is necessary to replace a function block with a newer revision, simply import the 
newer function block over the existing version. Doing this may clear all of the I/O fields. 
If this occurs, simply re-enter the input and output data into the block, then save and 
verify the project.