NCR 7454 - Read Display Data String

Chapter 6: NCR 7454 4x20 Customer Display 6-17
Description: Thissetofcommandchoosesoneofthetwosupportedinternal
charactersets.Characterset1isdefinedasPage1(International),
characterset2isdefinedasPage2(Japanese).Charactersetselectionis
dynamic.Hostsoftwarecanswitchbetweencharactersetsatanytime.
Switchingbetweensetsdoesnot
eraseorchangethedisplay.This
meanscharactersfrommultiplecha ractersetsmaybeonadisplay. The
defaultcharactersetisPage1(International).
Read Display Data String
Format: 1B 38
Returns: 0x50,ʺxxx‐‐‐‐‐‐‐‐‐xxxxxʺ
Where 0x50isa1bytestringlengthindicatorwhichindicatesthelength
ofthestringthatfollowsthestringlengthindicator. Forexample,50H
charactersaresentafterthestringlengthindicator.Note:Thequotation
marks“”arenotpartofthestringandare
notreturned.
Description: ThiscommandisarequestfortheRetailVFDtoreturnanASCIIstring
whicharebeingdisplayedontheRetailVFD.