Installation manual
Operation Manual for LCD Digital Readouts  Page 24 of 48 
SPECIAL FUNCTIONS 
See PROGRAMMING PARAMETERS (Pr24, 25, 26) 
Special Function Mode allows the DRO to perform special tasks or custom 
programming. These tasks interact with the F keys to perform functions related 
to a specific task or programming operation. 
Note: The operations configurable via the Special Function Mode are mutually 
exclusive of each other. The table below provides a summary of the included 
standard operations and each feature is further defined below. 
Programming Parameter Pr24 Value  Function 
0  No Special Functions. No F key Operation 
1  F3 = MON F4 = HOLD F2 = SPC delete 
2  Go/No Go gauge operation 
3  Measurement Accumulation 
4  Statistics Mode 
Note that when PROGRAMMING  PARAMETER  Pr24 is set to 0, the F2 to  F4 keys are 
disabled and have no function. (F1, used only for Offset Addition, is controlled 
by Pr30). 
SPECIAL FUNCTION 1: MONITOR, HOLD, DELETE 
PROGRAMMING PARAMETER Pr24 set to 1 
Monitor Mode: F3 
The Digital Readout has the ability to monitor a measurement position to detect 
position drift or measurement variance. To activate the Monitor Mode, position 
the Encoder to the desired location and momentarily press the  F3 key.   The 
MON
MONMON
MON  symbol  will  illuminate  on  the  LCD  to  indicate  that  the  Monitor  mode  is 
active. 
If  the  Encoder  moves  outside  the  programmed  tolerance  (PR26)  the  LCD 
reading flashes, indicating a drift condition.  When the Encoder is moved back 
within the programmed tolerance, the displayed reading will stop flashing. 
To exit the monitor mode, momentarily press the F3 key.  The MON
MONMON
MON symbol will 
turn off and the currently displayed position will stop flashing. 
Monitor mode can only be activated while in the ABS measuring mode.  If the 
ABS/INC key is depressed while monitoring, or the normal operational mode is 
left,  (programming  mode,  sending  a  data  transmission),  the  DRO  will 
automatically exit Monitor mode. 
When the monitor mode is enabled AND the programmable output is 
configured for drift monitoring, the hardware output will not become active until 
the encoder has remained out of position for at least 2 consecutive seconds. 










