154
Programming Console Operations Section 7-3
7-3-2 Clearing Memory
This operation is used to clear all or part of the Program Memory and data
areas, as well as the contents of the Programming Console’s memory. This
operation is possible in PROGRAM mode only.
Before beginning to program for the first time or when installing a new pro-
gram, clear all areas.
All Clear The following procedure is used to clear memory completely, including the
program, all data areas, counter PVs, Data Memory, and the PC Setup (DM
6600 to DM 6659).
1,2,3... 1. Bring up the initial display by pressing the CLR Key repeatedly.
2. Press the SET, NOT, and then the RESET Key to begin the operation.
Note The EM area will be displayed for the CQM1H-CPU61 only.
3. Press the MONTR Key to clear memory completely.
!Caution The PC Setup (DM 6600 through DM 6659) will be cleared when this opera-
tion is performed. The error log in DM 6569 to DM 6599 will not be cleared.
Signed decimal monitor Converts the contents of the specified word from signed hexadecimal (two’s
complement format) to signed decimal for display.
169
Differentiation monitor Monitors the up or down differentiation status of a particular bit. 170
Unsigned decimal monitor Converts hexadecimal data in a word to unsigned decimal for display. 170
Changing timer, counter SV 1 Changes the SV of a timer or counter. 171
Changing timer, counter SV 2 Makes fine adjustment changes to the SV of the timer or counter. 171
Hexadecimal, BCD data
modification
Changes the BCD or hexadecimal value of a word being monitored. 172
Binary data modification Changes the status of a word’s bits when the word is being monitored. 173
Signed decimal data
modification
Changes the decimal value of a word being monitored as signed decimal
data, within a range of –32,768 to 32,767 (–2,147,487,648 to 2,147,487,647
for double-length data). The contents of the specified word are converted
automatically to signed hexadecimal (two’s complement format.)
174
Unsigned decimal data
modification
Changes the decimal value of a word being monitored as unsigned decimal
data, within a range of 0 to 65,535 (0 to 4,294,967,295 for double-length
data). A change into hexadecimal data is made automatically.
174
Three-word data modification Changes the contents of one or more of the 3 consecutive words displayed
in the Three-word Monitor operation.
175
Force set/reset Forces bits ON (force set) or OFF (force reset.) 176
Clear force set/reset Restores the status of all bits which have been force set of reset. 177
Hex-ASCII display change Converts word data displays back and forth between 4-digit hexadecimal
data and ASCII.
178
Reading and setting the clock Reads or sets the internal clock. (A Memory Cassette with a clock must be
mounted.)
178
Displaying the cycle time Displays the current average cycle time (scan time.) 179
Name Function Page
RUN MONITOR PROGRAM
No No OK
SET
NOT
RESET
00000MEMORY CLR?
HR CNT DM EM~
MONTR
MEMORY CLR
ENDHR CNT DM EM~
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