User guide

Hardware
42
890 USE 108 00 August 2001
Editing Logic Loaded from EEPROM Card (A984-1xx, E984-24x/251/255 Only)
Editing Logic
From EEPROM
Card
An A984-1xx or an E984-24x/25x Controller loaded from an EEPROM card is
brought up in OPTIMIZED mode-i.e.; that is, either in RUN or STOPPED mode
(depending on the controller’s previous operating state) but not in EDIT mode. EDIT
mode is required for programming the controller.
To modify the newly loaded logic, you must move the controller out of OPTIMIZED
mode and into the Ladder Logic area. There are two procedures for doing this: one
for a controller that has an active battery; and one for a controller with no battery.
Editing
Procedure If
Controller Has a
Battery
Follow these steps to edit a controller that has an active battery.
Note: Remember that you cannot insert or remove the EEPROM card while the
controller is powered ON.
Step Action
1 Insert the EEPROM card with the desired logic into the slot in the controller, then
power up the unit. The controller should come up in OPTIMIZED mode with the
EEPROM logic and configuration data loaded.
2 Power down the controller.
3 Either remove the EEPROM card or turn ON (=) the memory protect slide switch.
4 Power up the controller again.
5 You must be ON LINE when using Modsoft. Choose either Select Program or
Direct to PLC. Check your Communications Parameters. Now you should be
in the ladder logic area where you can edit the EEPROM-loaded logic.