IS-120B
4. How to Operate Screens
4-19
(
j
)
PARITY CHECK
When this item is turned on, the parity check is performed to see if the schedule
signals are input correctly.
SCHEDULE
Schedule
signal 1
Schedule
signal 2
Schedule
signal 3
Schedule
signal 4
Parity
signal
1
●
2
●
3
●
●
●
4
●
5
●
●
●
6
●
●
●
7
●
●
●
8
●
9
●
●
●
10
●
●
●
11
●
●
●
12
●
●
●
13
●
●
●
14
●
●
●
15
●
●
●
●
●
(●
…
Closed, Blank
…
Open
)
As shown in the above table, a parity signal is added to the four schedule
signals so that the number of input signals is always becomes odd. If the
number of input signals is even, the error signal is output.
When this item is turned off, the parity check is not performed.
(
k
)
INTERRUPT
When the interrupt function is used, the current is turned off to avoid excessive
displacement, for example, when displacement reaches a certain level in the
fusing
(
See the figure below
)
.
ON
Interrupt function is used.
OFF
Interrupt function is not used
When fusing current starts
flowing, insulation coating
is melting ...
Electrode mores by distance equal to melted
depth (displacement).
This device is connected to
Miyachi Technos Weld Checker
(MM-720A/MM-730A, etc.) and
displacement is set.
When displacement reaches set
value, interrupt function works to
turn off fusing current.
Displacement
E
l
e
c
t
r
o
d
e
Workpiece
(With insulation
coating)
E
l
e
c
t
r
o
d
e
