A-8 
REVISIONS 
 
*The manual number is given on the bottom right of the front cover. 
Print Date  *Manual Number  Revision 
Jan., 1996  IB(NA) 66677-A  First edition 
Sep., 1998  IB(NA) 66677-B 
 Correction 
 
SAFETY PRECAUTIONS, Section 4.5.2 
 Addition   
Specifications, Performance specifications, 
EMC standards, 
Low-Voltage instruction 
 Deletion 
 
I/O module specifications and connections 
Dec., 2002  IB(NA) 66677-C  Equivalent to Japanese version E 
 Correction 
 
SAFETY PRECAUTIONS, 1.1, Chapter 3, 
Section 4.2, 4.3.1, 4.3.2, 4.5.2, Chapter 5, 
Chapter 6, Section 6.2 
Dec., 2003  IB(NA) 66677-D 
 Addition of model 
 
A1SY42P 
 Addition   
Chapter 7, Section 7.1, 7.2 
 Correction   
SAFETY PRECAUTIONS, Section 5.2.1, 
5.2.2, 5.3.1, 5.3.2, 6.2 
Jul., 2005  IB(NA) 66677-E 
 Correction 
 
SAFETY PRECAUTIONS, Section 1.1, 
Chapter 3, Section 3.1, 3.1.1, 3.1.2, 3.1.3, 
3.2, 3.2.4, 3.2.7, 4.1.1, 4.2, 4.3.1, 4.3.2, 
4.3.3, 4.3.4, 4.4, 6.2, 6.3 
 Section change 
 
Section 6.1, 6.2 are changed to Section 6.2, 
6.3, respectively.