Rockwell Automation 2706-LV2P_LV2R_LV4P_LV4R DL40 PLUS USER MANUAL - Manual (Page 170)

ASCII Character Sets D–4
Publication 2706-807
Accessing Cyrillic Characters
Russian language messages may be created and edited only within the
offline programmer. There are two ways to generate Cyrillic characters
using a standard IBM compatible keyboard. A full set of upper and
lower case characters can be generated in the Edit Message and Create
New Message screens of the offline programmer.
Using the Cyrillic character reference chart on the previous page, a
character can be entered by holding down the ALT key while
entering the decimal number corresponding to the desired character.
Releasing the ALT key will then display the normal corresponding
extended ASCII character. When the message is downloaded to the
DL40 Plus, the characters are converted to Cyrillic.