These  keys  can  be  pressed  anytime,  and  the  key  feedback  (beep)  may  be the  only  acknowledgment  of the  action. 
Typically,  the  LED  tracks  the  function  and  illuminates  each  time  the  associated  key  is pressed. 
Use  of  key  functions  can  be  controlled  by  assigning  operator  access  levels  to  each  key  (See  Section  9,  Operator 
Access  Levels,  and  Section  1, Log  In Procedure). 
FUNCTION KEYS 
Four  FUNCTION  KEYS  (cFi>,  <F2>,  <F3>,  and  cF4>)  are  located  directly  above  the  alphanumeric  display  (See 
Figure  34).  Within  the  Main  Menu  options,  these  key  definitions  change  as  required  to  perform  specific  actions  for 
selected  Main  Menu  options.  The  definitions  for  each  key  are  shown  on  the  top  line  of the  alphanumeric:  display  as 
an  aid  to  the  user.  A  function  key  does  not  require  any  other  key  to  be  pressed  to  activate  its  function.  Pressing  a 
key  causes  that  key  to  immediately  perform  its  defined  task.  Pressing  a  key  which  has  no  defined  action  for  the 
current  function  has  no  effect.  However,  the  tone-alert  acknowledges  the  key  press  with  a “beep”.  These  four  keys 
are  associated  with  advanced  functions  of  the  system  within  the  Main  Menu  options,  and  within  point  displays. 
These  keys  may  be  passcode  protected  for  some  of the  defined  operations. 
The  cFl>,  cF2>,  cF3>,  and  cF4>  keys  have  extended  actions  defined  during  point  displays  when  used  in 
conjunction  with  the  <FUNCTION>  key  on the  DISPLAY/ACTION  keypad.  The  actions  vary  with  the  point  and  status 
displayed. 
I  FUNCTION  KEYS  ~-, 
SYSTEM  IS  NORMAL 
6:15:43pm  MON  7  DEC  92 
Figure  34 
FUNCTION KEYS and Alphanumeric  Display 
HOW  TO  SET  TIME  AND  DATE 
NOTE: 
Setting  the  time  and  date  on  one  node,  sets  it  on  ALL  nodes.  At  midnight,  the  time  and  date  on  all  other 
network  nodes  automatically  updates  to  the  time  and  date  on  the  Master  Timekeeper  node. 
The  following  is an  example  of  how  to  use  the  function  keys  to  set  the  time  and  date. 
1.  Press  the  <MENU>  key.  The  following  is shown  on  the  alphanumeric  display. 
Press  <NEXT>  or  <PREVIOUS>  to  scroll 
Change  Access  Level? 
56