Ametek Gemco Brik 955QD Series Installation, Programming And Maintenance Manual page 15

Burst Mode
This feature enables the system to be absolute even though data transfer is through "incremental" method.
In the event of power failure, the controller can be programmed to automatically send a signal to the probe,
which will then respond with the current position data. An input signal to the probe will cause a "burst" of
data, representing the absolute position, to be fed back to the controller.
Zero Pulse
By sending a signal to the probe at any point in the stroke, a new zero point can be established. When using
the burst input, the absolute position provided will be relative to the programmed zero position. In probes
with volatile storage the zero point will be kept until a new zero pulse is sent or until the probe loses power.
Probes with nonvolatile storage will store the zero position even if you lose power. The nonvolatile zero can be
set 100,000 times; the volatile zero can be set an innite number of times.
The type of signal needed for the Burst and Zero inputs:
E = Sinking (PLC Sourcing Outputs)
C = Sourcing (PLC Sinking Outputs)
T = TTL
See section 3.9: Specications for more information or see gure 3.4
Installation, Programming and Maintenance Manual
Chapter 3: 955QD Overview
12