Drvi (Fnc 158); Drvi Fnc - Mitsubishi FX1S Series Programming Manual

FX Series Programmable Controlers
5.13.9

DRVI (FNC 158)

Mnemonic
DRVI
FNC 158
Drive to
increment
16 BIT OPERATION
M0
DRVI
Output Frequency, [D
Signal.
Points to note:
a)The maximum number of pulses [S
-999,999 to 999,999 pulses.
b)Users may use output pulse frequencies [S
c)Only Y000 or Y001 can be used for the pulse output [D
Because of the nature of the high speed output, transistor type output units should be used
with this instruction. Relay type outputs will suffer a greatly reduced life, and will cause false
outputs to occur.
To ensure a 'clean' output signal when using transistor type units, the load current should be
200mA or higher with the FX2N Series. The load current should be 10 - 100mA with the FX1S/
1N Series. It may be necessary to use 'pull up' resistors.
d)Rotation direction signal output [D
[D ] = ON, rotation = positive.
2
e)If the contents of an operand are changed while the instruction is executed, it is not reflected
on the operation. The new contents become effective when the instruction is next driven.
f)If the instruction drive contact turns off while the instruction is being executed, the machine
decelerates and stops. At this time the execution complete flag M8029 does not turn ON.
g)Once the instruction drive contact is off, re-drive of the instruction is not possible while the
pulse output flag (Y000 : [M8147], Y001 : [M8148]) is ON.
h)For operation in the incremental drive method, the travel distance from the current position is
specified with either a positive or a negative symbol.
i)The minimum value of output pulse frequency which can be actually used is determined by
the following equation
MaxSpeed D8147 D8146
Function
S
Increment K,H,
positioning KnX,KnY,
KnM,KnS
T,C,D,V,Z
32 BIT OPERATION
[S ] [S ] [D ]
[D
1 2 1
2
K25000 K3000 Y000 Y004
] is the Pulse Output Designation, and [D
1
÷ 2 (
[ , ] Hz
Operands
S D
1 2 1
Y
Note:
Y000 or
Y001 only
Operation:
]
This instruction is for single speed positioning in
the form of incremental movements.
[S ] is the Number of Pulses, [S
1
] available are: 16-bit -32,768 to 32,767 pulses or 32-bit
1
], 16-bit 10 to 32,767Hz or 32-bit 10 to 100kHz.
2
] operated as follows: if [D
2
× (
Acceleration\Deceleration D8148
Applied Instructions 5
FX FX
1S 1N
Program steps
D
2
Y,M,S DRVI
9 steps
DDRVI
17 steps
PULSE-P
] is the Rotation Direction
2
].
1
] = OFF, rotation = negative, if
2
[ ] ms ÷ 1000 ) )
FX FX
2N 2NC
] is the Pulse
2
5-168