Manual

System Configuration and Setup 4-19
Local Machine Offsets
For factories that run the same FmNT dispensing program on multiple machines, the goal is to have one
“golden” program. Because no two machines perform exactly alike, in order for a program written on
one machine to perform the same on another machine, some correction or calibration is required. Local
Machine Offsets (LMO) is a group of three features that help obtain the goal of one “golden” program.
LMO allows you to transfer a dispensing program from one dispensing system to another without having
to reteach the Workpiece Origin, Heater Offsets, or Valve Bias.
For example, if you have three dispensing systems and you want to run the same dispensing program on
all three systems, you would perform a Valve Offsets or Calculate Master Offsets on all three systems,
create the dispensing program on one system and activate the LMO feature on the other two. When the
program is transferred to the other two systems, FmNT will automatically use the offset parameters
specific to each system instead of the offsets associated with the program.
Workpiece Origin (WPO)
The location of the Workpiece Origin (WPO) on a machine is its position in the work envelope relative to
machine Home (0,0). This relative location will likely vary on every machine. Local Machine Offsets
identifies that difference and uses it as a correction factor for all locations in that program. This allows
each machine to dispense accurately.
Heater Offsets
Heater offset is the actual temperature measured at the tooling on different machines for a given input
(use of temperature measuring device is necessary to get the actual temperature). Once offset is learned
(Machine 1 vs. Machine 2), it is used to raise or lower the temperature as needed.
Valve Bias
No two valves dispense exactly alike, especially when used on different machines. Once a valve
identifier is established (usually valve model number and serial number) and it is paired with a fluid file
and a flow rate measurement is taken, the valve speed is adjusted as necessary until the flow rates on both
machines are the same. A sample dispense run (usually a 30-slide test) is performed to determine the
offset between the programmed weight and the actual dispensed weight. This offset becomes the bias.
Maintenance
Local Machine Offsets maintenance lets you establish the number of days the Local Machine Offsets are
valid. This ensures that the offsets remain accurate.