Clearing Memory

This clears the memory only in the HHT.

[F5] UTILITY
[F5] CLR_MEM
ARE YOU SURE?
[F2] YES
WORKING…

I don’t know why but if you wanted to clear the processor memory

[F5] UTILITY
[F1] ONLINE
GOING ONLINE…
[F4] MODE
[F5] PROGRAM
ARE YOU SURE?
[F2] YES
ESC
[F5] CLR_PRC
ARE YOU SURE?
[F2] YES
INITIALIZING PROCESSOR…

Upload from PLC to HHT

[F5] UTILITY
[F1] ONLINE
PROGRAM FILES DIFFER   (If you don’t get the prompt then the files are the same.)
[F2] UPLOAD
UPLOAD FROM PROCESSOR?
[F2] YES
UPLOADING FILE…

Once done it will show the file name.

Download from HTT to PLC

[F5] UTILITY
[F1] ONLINE
PROGRAM FILES DIFFER or DEFAULT FILE IN PROCESSOR
[F3] DWNLOAD or [F2] DWNLOAD
DOWNLOAD TO PROCESSOR?
[F2] YES
DOWNLOADING FILE…

Once done it will show the file name.

Change Modes

[F5] UTILITY
[F1] ONLINE
[F4] MODE
[F1] RUN or [F5] PROGRAM
ARE YOU SURE?
[F2] YES

Monitor the Ladder Logic

[F5] UTILITY
[F1] ONLINE
If not in run mode then follow “change mode” instructions above
ENTER
[F5] MONITOR
ENTER FILE NUMBER: 2
WORKING… and there it is in all it’s glory.

Press RUNG and enter the number of the rung to go straight to it.

Pressing ZOOM when on an instruction will display it’s details.

[F4] SEARCH

Search functions

[F1] CUR-INS finds current instruction that the cursor is on
[F2] CUR-OPD finds current operand that the cursor is on
[F3] NEW-INS enter an instruction to find
[F4] UP/DOWN toggle to search up or down.
[F5] FORCE find force

Monitoring/Entering the Data

Follow the “monitor the ladder logic” instructions

[F3] EDT_DAT
The prompt has the current address value to be changed.
[F1] ADDRESS enter address to go to
[F2] NEXT_FL go to next file
[F3] PREV_FL go to previous file
[F4] NEXT_PG go to next page
[F5] PREV_PG go to previous page

Editing the Ladder Logic

[F3] PROGMAINT
[F3] EDT_FIL
ENTER FILE NUMBER: 

[F1] INS_RNG this will put a rung above the cursor position.
[F2] MOD_RNG modify the current rung
[F3] SEARCH will search for instruction
[F4] DEL_RNG delete rung
[F5] UND_RNG undo rung
ENTER
[F2] EDT_DAT edit data
[F4] SAVE_CT compile program but do not exit editing
[F5] SAVE_EX compile program and exit editing

Example Editing an On Timer’s T4:0 Preset from 1000 to 1500

Place cursor on timer

[F2] MOD_RNG
[F3] MOD_INST
[F2] TMR/CNT
[F1] TON
ENTER TIMER: T4:0
ENTER
ENTER PRESET: 1000 change to 1500
ENTER
[F5] ACCEPT
WORKING…
ESC
ESC
[F5] ACP_RNG
ENTER
[F5] SAVE_EX
MODIFY OPTIONS, ACCEPT TO COMPILE
[F5] ACCEPT
STATUS: COMPILE IN PROGRESS.  NO ERRORS.
ESC

Now go download the program