PLC type A2NCPUP21-S1 Programming Manual(Fundamentals)(PLC A2NCPUP21-S1编程手册(基础))
PLC type A2NCPUP21-S1 (A Mode) Programming Manual(Common Instructions)(PLC A2NCPUP21-S1编程手册(常用指令))
Programmable Controller A2NCPUP21-S1 User''s Manual (CPU A2NCPUP21-S1用户手册)
A2NCPUP21-S1 Training Manual(A2NCPUP21-S1培训手册)