
B-66284EN/01 2.DEVELOPMENT OF CUSTOM SCREEN
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4. Supports both number IF and bit I/F as the message indication
interface (abbreviated I/F) for collecting history. For the number
I/F, there may be up to 32 monitoring PMC areas; for the bit I/F,
the monitoring PMC area may be of up to consecutive 512 bits.
CAUTION : IMPORTANT
1 An unused history collection block is always in the
history deleted state. Thus, the history collection
data in a block used once will be deleted when the
use of the history block is stopped. History blocks
will be cleared to zero and enter the history deleted
state due to the rewriting of the values of
parameters Nos. 8661 and 8662.
2 For bit signals, history collection can collect the
on/off signal states of up to consecutive 512 bits at
four locations. You must, however, adjust the
number of history monitoring PMC signal areas by
considering the control environment of the CNC
control unit used and the display performance of
the custom screen.
History Block Number :
You can specify up to four blocks for recording message
indication history for a history message indication control. Check
the check box of the block number used.
History Deletion Area/Address/Bit :
For each history block, specify the signal for deleting and
initializing the history block. Keep this signal on for 500 ms or
more. When the operator’s panel detects a rising edge of this
signal, the corresponding history block is deleted and initialized.
BitIF :
Check this check box to use the bit interface for the history
message indication method.
With the method using the bit interface, a single message
indication is performed for each bit signal of the PMC. If
multiple message indication request bits are detected at the same
time, the request with the smallest signal and bit numbers will be
recorded first.
Search Start Area/Address/Bit :
Specify the start signal position of the area used to monitor
message indication history signals with the bit interface.
Search Bit Counter :
Specify the number of consecutive bits to be monitored, starting
at the start of the search start signal. A number up to 512 can be
specified.