Mitsubishi Electric MELSEC FX-1HC User Manual

This manual contains text, diagrams and explanations which will guide the reader in the correct installation
and operation of the FX-1HC special function block and should be read and understood before attempting
to install or use the unit.
Further information can be found in the FX PROGRAMMING MANUAL and FX SERIES HARDWARE
MANUAL.
1
The FX-1HC hardware high-speed counter block is 2-phase 50 kHz high-speed counter. It is a special
function block for the FX, FX
speed counter of the PC (2-phase 2 kHz, 1-phase 10 kHz) and performs comparisons and outputs
directly.
Various counter modes, such as 1-phase or 2-phase, 16-bit or 32-bit modes, can be selected using
commands from the PC. Allow the FX-1HC unit to run only after setting these mode parameters.
The source of your input signal should be a 1 or 2 phase encoder. A 5V, 12V, or 24V power source can
be used. An initial value setting command input (PRESET) and a count prohibit command input (DISABLE)
are also available.
The FX-1HC has two output. When the counter value coincides with an output compare value, the
appropriate output is set ON. A PNP and an NPN output transistor is provided for both outputs to allow
either sink or source connection methods.
FX PCs versions 2.0 or later (those with serial number 13XXXX or larger) are required as these units have
the TO/FROM applied instructions in their instruction set. Data transfer between the FX-1HC and the FX PC
is by buffer memory exchange. There are 32 buffer memories (each of 16 bits) in the FX-1HC.
The FX-1HC occupies 8 points of I/O on the FX or FX
from either inputs or outputs.
SPECIAL FUNCTION BLOCK
INTRODUCTION
series PC. The FX-1HC counts at a higher speed than the built-in high-
2C
FX-1HC
USER'S GUIDE
JY992D53001A
expansion bus. The 8 points can be allocated
2C