Metrolab FDI 2056, User Manual, Page: 54 / 87

FDI2056 Use
r’s Manual
v 2.0 r 1.1
– 03/13
Copyright © 2013 Metrolab Technology SA
49 www.metrolab.com
IND,- CR
LF
Turn the motor in the backwards direction
(BW) until the index pulse is detected.
TRI,-,140/8,10/3,1000
CR
LF
Prepares a sequence of 11
measurements in the backward direction,
the first TRIGGER is at absolute position
140 (pulses, not cycles).
MOT,A CR
LF
Sets motor to automatic
RUN CR
LF
Starts the motor, perform the
measurements then stop the motor.
4-9-2-2 Linear Encoder with Index
TRS,E,S
This case is identical to the one above except for the following points:

The absolute position can range from -2
30
to +2
30
, on either side of
the index point

The absolute position in the TRI programming sequence of the
command can be negative
4-9-2-3 Linear or Rotational Encoder without Index, but with External
Synchronization
TRS,E,S
The external synchronization signal must be connected to the SYNC
input. It is used to define the "zero" position of the encoder when it first
occurs after the
IND,s command. If s is specified, the motor is moved
until the first SYNC pulse is received. If s is not specified, the
instrument waits at the current position for the SYNC pulse.
After this the PDI 5025 behaves in the same way as the linear encoder
with an index.
4-9-2-4 Linear or Disk Encoder without Index or External Synchronization
TRS,E
The TRS counter is cleared by the RUN command.
Warning: The mathematical sign (+,-) of the absolute position a must
be the same as that of the direction s in the TRI command.
Trigger Source: External 4-9-3
A trigger signal can also be fed externally and is selected by sending the TRS,X
or TRS,X,S command.
In this case the TRI command does not serve any purpose since the triggering
sequence is not controlled internally.