Continuous Operation - Mitsubishi Electric MELSEC iQ-F FX5 User Manual

Continuous operation

In continuous operation, operation is performed successively without deceleration stop between tables. The specified
positioning address that has been output is the start address of the next table.
The positioning complete flag turns on when execution of all the specified tables is completed. Unlike stepping operation, the
table shift command is not required.
The following figure shows an example of continuous operation with tables 1 to 5 (With dwell time).
address of the
Drive contact of the
DRVTBL/DRVMUL
instruction
Instruction execution
complete flag
*1
SM8029
User-specified
Instruction execution
complete flag
Table number in
0
execution
*1 Only the DRVTBL instruction functions.
*2 Remains on until the user turns off the flag.
Operation
The following explains the operation of tables and flags in the continuous operation.
■Operation of the table
• Dwell time of the last table is the time until the complete flag turns on after deceleration stop.
• When tables are executed successively causing a direction change, deceleration stop is performed once and then output is
started in the reversed direction. The waiting time for the pulse output in the reversed direction after stop is "1 ms + scan
time".
• If the operation ends with an error when tables to be executed are left, the rest of the tables are not executed.
• If a table that cannot be combined is executed, the operation ends with an error. In this case, the table before the table that
cannot be combined is handled as the last table. After deceleration stop is performed for the previous table and dwell time
elapses, the abnormal end flag turns on. The dwell time of the previous table is used.
• Some control methods can be used with the remaining distance operation. (Page 39 Remaining distance operation)
■Operations by control method
• When a table with control method [0: No Positioning] is executed, all the tables are considered to be normally completed.
Then, the positioning complete flag turns on, and tables that follow the table with control method [0: No Positioning] are not
executed.
• The jump condition of control method [10: Condition Jump] is judged two tables before. (Example: If table 8 has control
method [10: Condition Jump], the conditions are judged when execution of table 6 is started.) When the jump-destination
table of control method [10: Condition Jump] has control method [10: Condition Jump], the conditions of control method [10:
Condition Jump] of the jump-destination table are judged at the same time.
Positioning Positioning
address of the address of the
table 1 table 2
1 2
Positioning Positioning
address of the
table 3 table 4
3 4
Positioning
address of the
table 5
Dwell time
Dwell time
5
6 TABLE OPERATION
6.3 How to Execute Multiple Tables
6
*2
0
193