Mitsubishi Electric MELSEC FX3U Programming Manual page 395

FX /FX /FX Series Programmable Controllers
3G 3U 3UC
Programming Manual - Basic & Applied Instruction Edition
4. Handling of pulse output terminals in the FX
The outputs Y000 and Y001 are the high
speed response type.
When using a pulse output instruction or
positioning instruction, adjust the load current
of the open collector transistor output to
about 10 to 100 mA (5 to 24V DC).
When the load is smaller, connect a dummy
resistor in parallel to the outside of a used
output terminal (Y000 or Y001) as shown in
the circuit diagram below so that the
specified current shown above flows in the
output transistor.
5. Cautions on using special high speed output adapters
1) Outputs of special high speed output adapters work as differential line drivers.
2) Set the pulse output type setting switch in a special high speed output adapter to the "pulse chain +
direction" (PLS DIR) side.
If the switch is set to the "forward rotation pulse chain reverse rotation pulse chain" (FP RP) side, normal
operations are disabled. The pulse output destination changes depending on the PLC output status as
shown in the table below.
Pulse output
destination
= Y000
D
= Y001
D
3) Set the pulse output type setting switch while the PLC is stopped or while the power is OFF.
Do not manipulate the pulse output form setting switch while pulses are being output.
4) When special high speed output adapters are connected, the same output numbers in the main unit are
assigned as shown in the table below.
Only wire the appropriate output terminals.
Outputs in special high speed output adapters and the main unit operate as shown below.
Assignment of output numbers in special high speed output adapters
Status of output form
setting switch
"FP RP" side
"PLS DIR" side
Output operation
Relay output type main unit
Special high speed output adapter
Transistor output type main unit
Output affecting
operation
While Y004 is ON, pulses are output from Y000 in the high speed output adapter.
Y004 While Y004 is OFF, pulses are output from Y004 in the high speed output
adapter.
While Y005 is ON, pulses are output from Y001 in the high speed output adapter.
Y005 While Y005 is OFF, pulses are output from Y005 in the high speed output
adapter.
Signal name
Forward rotation
pulse chain (FP)
Reverse rotation
pulse chain (RP)
Pulse chain
Direction
While instruction is activated, relevant output is ON. (LED is also ON.)
Use a special high speed adapter.
Operated.
Set the output frequency to "200kHz" or less.
Operated.
Set the output frequency to "100kHz" or less.
13 High Speed Processing – FNC 50 to FNC 59
13.8 FNC 57 – PLSY / Pulse Y Output
, FX and FX
3G 3U 3UC
Operating voltage range
Operating current range
Output frequency
Equipment
load
resistor
External
power
supply
Input circuit
Operation
Setting name in each
positioning instruction
1st axis 2nd axis 3rd axis 4th axis
Pulse output destination
Rotation direction signal
Pulse output destination
Rotation direction signal
Output operation
series main units
Item Description
5 to 24V DC
10 to 100 mA
100 kHz or less
PLC
(transistor output)
Dummy
resistor
[sink output]
Y000
COM1
Output number
1st unit 2nd unit
Y000 Y001 Y002
Y004 Y005 Y006
Y000 Y001 Y002
Y004 Y005 Y006
11
12
13
14
15
16
17
18
Y003
Y007
Y003
19
Y007
20
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