Technical information

4
230V FX Series Positioning Drive Reference Manual
Pulse mode is selected with specific front panel DIP switch settings. The FX drive may be
commanded to execute Indexes, Jog and Home moves when in this mode.
Pulse/Direction
The Pulse/Direction mode uses two separate inputs for pulse and direction (the same as used
for the clockwise and counterclockwise inputs). When pulses are applied to the pulse input,
the direction of the motor shaft is controlled by the direction input.
Serial Communications
The FX drive is capable of two-way communication with an external controller or computer
using an optically isolated RS-423 serial interface port. RS-423 is signal compatible with both
RS-232C and RS-422 serial communications protocols. Programming of motion parameters,
input/output functions, operating modes, indexes, and setup parameters can be accomplished
through this serial interface port. Amplifier status and motor position information is also
available through serial communications.
The serial interface may be used as a “real-time” control interface. However, due to
transmission time, consideration must be given to system performance requirements prior to
applying this method for real-time control. Stop commands, for example, may not be
executed fast enough.
Multi-drop serial cables can be used to connect up to 31 drives to a single COM port. In a
multi-drop setup, each drive must have a unique axis identifier code. The identifier codes are
set using DIP switches on the front panel. An example of a multi-axis connection is shown
below.
Figure 6: Serial Communication Multi-Drop Setup Example
Input/Output Functions
The FX drive is equipped with eight optically isolated input lines and four optically isolated
output lines. Each input and output line has two screw terminals associated with it. The first
eight pairs of terminals, numbered 1 through 8, are inputs and the last four pairs of terminals,
numbered 9 through 12, are outputs. Each of these I/O lines can be configured to perform a
variety of motion control functions. These I/O functions are assigned to the I/O lines using
MULTI-DROP CABLE FROM
SERIAL 2A (DRIVE 1) TO
SERIAL 1A (DRIVE 2) (DD-XXX)
HOST CABLE TO SERIAL 1A
(TIA-XXX OR TIX-XXX)