Omron CS1W-MC221 -, Operation Manual

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277
Interface Specifics Section 5-4
Programming Example 2
Program Number Read Bits
These bits specify reading the number of the MC program that will be exe-
cuted in each task. Status is read when the Cycle Start Bit turns ON. If a bit is
ON when the Cycle Start Bit turns ON, the Program Number set in the PLC
Interface Area will be read and the specified program will be executed from
the beginning.
When any MC programs in the same task have been edited, added, or
deleted, always turn ON the Program Number Read Bit the next time that the
Cycle Start Bit is turned ON. An error will occur if the Program Number Read
Bit is OFF.
Note Refer to the Cycle Start Bits on page 268.
Teaching Bits
These bits are used to read the reference coordinate system position into the
position data address according to the Teaching Type Bit specification: Target
Position or Present Position (Feedback Value).
When a bit is turned ON, the present position is read as the position data and
then the teaching addresses stored in memory for the axes in the task are
incremented.
The bit must be kept ON until the Teaching Completed Flag turns ON.
Teaching can be performed in Automatic or Manual Mode, even if a task error
has occurred.
Note Refer to the Teaching Type Bits on page 278.
Word Task Bit I/O Valid mode
MC221 MC421
n+3 Task 1 07 Output Auto
n+5 Task 2
--- n+7 Task 3
--- n+9 Task 4
n+3
06
Reset condition
OUT
(Resets the M code. )
Signal Function
1 Indicates reading the Program Number.
Word Task Bit I/O Valid mode
MC221 MC421
n+3 Task 1 09 Output Manual or Auto
n+5 Task 2
--- n+7 Task 3
--- n+9 Task 4
Signal Function
↑
Present positions are read to memory.