Mitsubishi MELSEC-A A1SD71-S2 User Manual page 76

3. SPECIFICATIONS
MELSEGA
3.6 i/O Sign8+S
i o and From
A1S CPU
The AlSD71 uses 16 inputs and 14 outputs
for non-numerical com-
munications with the A1 SCPU. I/O signal assignment and functions are given
below.
Table 3.9 shows I/O signals with the AlSD71 in slot No.0 and No.1 of the
main base unit.
Device X indicates an input signal from the AlSD71 to the AlSCPU.
Device Y indicates an output signal from the A1 SCPU to the AlSD71.
Table 3.9 i/O Signal List
Signal Direction: AlSD71 to AlSCPU
I
Sipnal Direction: AlSCPU
to
A l S D 7 1
r
1
-
Device
number
X0 to XF
x10
Signal
I
Device
number
Signal
Not used
Watchdog timer error
x 1 1
x 1 2
X13
X14
X axis
Positioning complete
X axis
Y axis
X15
X16
X axis
Zero return request
Y10 to Y1F
Used by system. Unavailable to the
user.
X17
X18
x19
X1A
X1 B
Error detection
I
x 1 c
Zero return complete
I
Y axis X1D
X1 E
X1 F
20 to X2F
X axis
- 1
M code ON
Y
axis
X axis
I
I
Y21
X axis
Zero return start
1
Y25 X axis
Y axis
I
Y26
Jnusable
E
Y 2A
X axis Forward jog start
X axis Reverse jog start
Y axis Forward jog start
Y axis Reverse
ioa
start
~~ ~~
X axis
M code OFF
PC ready
Used by system. Unavailable to the
user.
IMPORTANT
~~ ~~
Y2E, Y2F, X20
to
X2F, and Y10 to Y1
F
are reserved
for
use by the OS
or for special applications which are detailed later.
When the above devices are used (turned ON/OFF) using a sequence
program, normal functioning of the A1 SD71 cannot be guaranteed.
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