
B–63835EN/03
D. LED DISPLAY AND MAINTENANCE
OF CONTROL UNIT
APPENDIX
635
This function allows the maintenance switches to be used to display data
without using any display unit.
(1)Check that number 4 blinks on the LED. Press the push switch.
(2)Number 4 is displayed on the LED. Press the push switch.
(3)Number 0 is displayed on the LED. Press the push switch.
(4)Numbers 0 and 2 are displayed alternately on the LED at intervals of
about one second. When 2 is displayed, press the push switch.
(5)The device number used for the display link function is displayed on
the LED.
This function clears all the battery backed–up SRAM data. The device
number for the display link function is also cleared. Once the device
number has been cleared, the device number is set to 0.
(1)Check that number 5 blinks on the LED. Press the push switch.
(2)Number 5 is displayed on the LED. Press the push switch.
(3)The display on the LED changes from – to F to 9 to 8 to 7 to 6 to 5 to
4 to 3 to 2 to 1 to 0 in this order.
(4)After all–clear operation terminates normally, the LED display stops
changing at number 0.
(5)Turn off the power, set the rotary switch to 0 (normal state), then turn
on the power again.
This function saves battery backed–up main board data in a memory card
at a time. The data saved using this function can be restored at a time by
performing the operation for function number A or by using the
SRAMDATABACKUP function of the boot function.
(1)In the memory card slot (MEMORY CARD CNM1B) of the control
unit, insert a formatted memory card having at least 512 KB of
available space.
(2)Check that number 8 blinks on the LED, and press the push switch.
(3)While data is being saved in the memory card, the LED indication
turns clockwise.
(4)If the data cannot fit in one memory card, number 3 blinks. Replace
the memory card with another one, and press the push switch.
(5)If the protect switch of the memory card is not released or if the battery
capacity of the memory card is insufficient, number 2 blinks on the
LED. Replace the memory card with another one, and press the push
switch.
(6)When the data has been saved normally, number 0 is displayed on the
LED. If the data cannot be saved normally, number 1 is displayed on
the LED.
(7)If SRAM PARITY occurs during data save operation, number 1 blinks
on the LED. In this case, it is impossible to save the data at a time.
Back up individual data items one by one, then perform all–clear
operation.
D.3.4
Operation of Each
Function
D Function number 4
D Function number 5
D Function number 8