Support: FUN48/49 in EMII

Support : Support Documents : Caution in FUN48/49 in EMII

Caution when using EX(FUN48) or DB(FUN49) in EMII Series

When you use EX(FUN48) or DB(FUN49) in EM-II programming, see below carefully.

1. Caution

In old CPU version, EX(FUN48) and DB(FUN49) instructions work in spite of input condition (ON/OFF) by system software bug. In new CPU version, EX(FUN48) and DB(FUN49) instructions work when input condition is ON, and these don't work when input condition is OFF.

2. Example

Fig.1 shows user program on CPU memory. In old CPU version, this program works according to Fig2. In new CPU version, this program works according to Fig1.

Fig 1: User Program on Memory

Fig 2:Actual Action of EMII Old Version

3. How to distinguish You can distinguish between old version and new version by looking at manufacturing number on CPU connector. Relation between manufacturing number and CPU version shows below.

Table 1 Manufacturing number and CPU version

: Doesn't Matter