Melec C-VX875, Instruction Manual, Page: 6 / 32

- 6 -
C-VX875
Instructions Manual
1‑4. Function Block Diagram
CN1 J1
Drive Control block  Driver ＆ Sensor
X‑axis
Counter block 
Drive Control block  Driver ＆ Sensor
Y‑axis
Counter block 
Drive Control block  Driver ＆ Sensor
Z‑axis
Counter block 
PCI Bus Local Bus
Drive Control block  Driver ＆Sensor
A‑axis
Counter block 
General‑purpose output 
(OUT0‑‑OUT3) General‑purposeI/O
General‑purpose input 
(IN0‑‑IN3)
SENSORx Input
J3
Hard Configuration block 
Manual Input
(Applied Function)
SIGNAL INx Input
SIGNAL OUTx Output
(Applied Function)
J2
(Insulation) 
Ａ
Ｌ
‑
AL‑Ⅱ I/O Communication

Ⅱ
Control block
Ｉ
／
Ｏ
Bus interface block 
Interface block with the PCI bus
Drive control block 
The drive control block outputs serial pulses to the motor driver.
The 2‑axis indicated by is interrelation.
It enables 2‑axis linear interpolation or 2‑axis circular interpolation.
Counter block 
The counter block has three types of counters: ADDRESS COUNTER, PULSE COUNTER, and DFL COUNTER.
(Can use as hard timer.)
ADDRESS COUNTER, PULSE COUNTER has 32‑bit counter, DFL COUNTER has 16‑bit counter.
These counters count pulses output by the controller or signals such as feedback signals from the
encoder.
Each counter equipped with three compare registers. These registers count optional count.
General‑purpose OUTPUT block 
The block can control OUT0〜OUT3
General‑purpose INPUT block 
The block can control IN0〜IN3
M
C
C
0
7
M
C
C
0
7
B
u
s
i
n
t
e
r
f
a
c
e
b
l
o
c
k

U
s
e
r
I
/
O

S
P
E
C
I
A
L
‑
P
U
R
P
O
S
E
I
/
O

Ａ
Ｌ
Ⅱ
Ｉ
／
Ｏ
Ｕ
Ｎ
Ｉ
Ｔ