Series 16/18/160/180-Model C Maintenance Manual, GFZ-62755EN ...

B–62755EN/011. DISPLAY AND OPERATION OF CRT/MDI1.5.3Parameter3113#7MS1#6MS0#5 #4 #3 #2 #1 #0MHC#0 (MHC) The records of an external operator message:0 : Cannot be erased.1 : Can be erased.#6, #7 (MS0,MS1) These bits set the number of characters to be retained in each record of anexternal operator message, as well as the number of records, as shown inthe following table:MS1 MS0 Number of charactersin each recordNumber of records0 0 255 80 1 200 101 0 100 181 1 50 32* An external operator message of up to 255 characters can be specified.Combining the MS1 bit and MS0 bit (bits 7 and 6 of parameter No.3113) selects the number of records by limiting the number ofcharacters to be retained as the record of an external operator message.3112#7#6 #5 #4 #3 #2OMH#1 #0#2 (OMH) The external operator message history screen is:0 : Not displayed.1 : Displayed.CAUTIONAfter setting this parameter, briefly turn the power off, thenon again.1.5.4NotesWhen the number of an external operator message is specified, the systemstarts updating the records of the specified message. The systemcontinues to perform update until another external operator message isspecified or until an instruction to delete the records of the externaloperator message is specified.29