2.9.2 High-Speed Counter Modules and Adapters
FX2N-1HC, FX2NC-1HC and FX3U-2HC
In addition to the internal high-speed MELSEC FX counters, the high-speed counter modules
FX
2N-1HC, FX2NC-1HC and FX3U-2HC provide the user with an external counter. They count 1-
or 2-phase pulses up to a frequency of 50 kHz resp. 200 kHz for the FX
3U-2HC. The counting
range covers either 16 or 32 bit.
FX
3U-4HSX-ADP and FX3U-2HSY-ADP
These adapter modules allow direct processing of positioning application data.
Overview of High-Speed Counter Modules/Adapters
쎲
The special adapter or special function module can be used with a base unit or expansion unit of this
series.
쑗
The special adapter or special function module cannot be used with this series.
The Hardware Extending for Special Functions
Training Manual GX IEC Developer 2 - 23
The two integrated transistor outputs can be switched
independently of one another by means of internal compar
-
ison functions. Hence, simple positioning tasks can also
be realized economically. In addition, the high-speed coun
-
ter modules can be used as ring counters.
X1/4 X6/7
X2/5X0/3
POWER
FX
3U
-2HSX-ADP
SG
SG
X6/7
X2/5
X1/4
X0/3
-
+
-
+
-
+
-
+
SGB
Y5/7
-
+
Y1/3
-
+
Y4/6
-
+
Y0/2
-
+
Y4/6
Y5/7
Y1/3Y0/2
POWER
FX
3U
-2HSY
-ADP
FP
.RP
PLS D
IR
SGA
The FX3U-4HSX-ADP (far left) provides four
high speed counter inputs up to 200 kHz while
the FX
3U-2HSY-ADP (left) delivers two chan-
nels of pulse train outputs up to 200 kHz.
CAUTION:
When connecting these special adapters,
same input resp. output numbers are allocated
to the base unit and the special adapter. Wire
either one of the input or output terminals
Module type Designation Description FX1S FX1N FX2N FX2NC FX3G FX3U FX3UC
Special function
module
FX
2N-1HC
1-ch high speed
counter
쑗쑗쎲쎲 쑗 쎲쎲
FX
2NC-1HC
쑗쑗쑗쎲 쑗 쑗쎲
FX
3U-2HC
2-ch high speed
counter
쑗쑗쑗 쑗쎲쎲
Special adapter
FX
3U-4HSX-ADP
Differential line driver
input (high-speed
counter)
쑗쑗쑗쑗 쑗 쎲쑗
FX3U-2HSY-ADP
Differential line driver
input (positioning
output)
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