Omron CS1W-MC221 -, Operation Manual

Page: 260 / 705

233
Controlling the MC Unit from the CPU Unit Section 5-2
Program Flow Turn ON input R1 to specify Automatic Mode.
Turn ON input R2 in the following situations:
• The first time that the program is executed after the power is turned ON.
• When executing the program from the beginning.
• When the program number has been changed.
Execution of the MC program will begin when R4 goes ON.
Program Execution Flag The Program Execution Flag is equivalent to the Manual Mode’s Busy Flag.
This flag is ON while the MC program is being executed; it is OFF when pro-
gram execution is completed or stopped.
Program Execution
Completed Flag The Program Execution Completed Flag goes ON when the MC program has
been completed. The Program Execution Flag will go OFF when this flag is
turned ON, even if the Cycle Start Bit remains ON.
Related Bits
Cycle Start Bit
Program Execution Flag
Cycle Start Bit
Program Execution Completed Flag
Program Execution Flag
Name of bit Model PLC Interface Area Bit Description
Task 1 Task 2 Task 3 Task 4
Program
Number MC421
MC221 n+2
n+2 n+4
n+4 n+6
---
n+8
---
00 to 15 Sets the program number for each
task. (0000 to 03E7 hex)
Automatic/
Manual Mode
Bit MC421
MC221 n+3
n+3 n+5
n+5 n+7
---
n+9
---
01
Cycle Start Bit 02
Program Num-
ber Read Bit 07
1 : Automatic Mode
0 : Manual Mode
↑
↓
: All axes in manual operation
decelerate to a stop.
: Stops program execution. All
axes in operation decelerate
to a stop.
: Starts program execution.
1 : Continues program execu-
tion.
0 : Stops program execution.
↑
1 : Reads the program number.