![background image](http://html.mh-extra.com/html/omron/sysmac-c20k/sysmac-c20k_operation-manual_1633423142.webp)
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The program for this process, shown below, utilizes the most basic type of
step programming: each step is completed by a unique SNXT(09) that starts
the next step. Each step starts when the switch that indicates the previous
step has been completed turns ON.
0000
LD
0001
0001
SNXT(09)
1000
0002
STEP(08)
1000
Address
Instruction
Operands
Address
Instruction
Operands
0100
LD
0002
0101
SNXT(09)
1001
0102
STEP(08)
1001
Address
Instruction
Operands
0200
LD
0003
0201
SNXT(09)
1002
0202
STEP(08)
1002
Address
Instruction
Operands
0300
LD
0004
0301
SNXT(09)
1003
0302
STEP(08)
1003
SNXT(09) 1000
0001 (SW1)
STEP(08) 1000
SNXT(09) 1001
STEP(08) 1001
SNXT(09) 1002
STEP(08) 1002
SNXT(09) 1003
STEP(08)
Process A
Process B
Process C
0002 (SW2)
0003 (SW3)
0004 (SW4)
Process A
started.
Process A
reset.
Process B
started.
Process
B reset.
Process C
started.
Process C
reset.
The following process requires that a product is processed in one of two
ways, depending on its weight, before it is printed. The printing process is the
same regardless of which of the first processes is used. Various sensors are
positioned to signal when processes are to start and end.
SW A1
SW A2
SW B1
SW B2
Process C
Weight scale
Process B
Process A
Printer
SW D
Example 2: Branching
Execution
Step Instructions
Section 5-18
Summary of Contents for SYSMAC C20K
Page 1: ...Cat No W146 E1 5 Programmable Controllers SYSMAC C20K C28K C40K C60K ...
Page 2: ...K type Programmable Controllers OPERATION MANUAL Revised July 1999 ...
Page 3: ...iv ...
Page 5: ...vi ...
Page 19: ...7 SECTION 2 Hardware Considerations 2 1 Introduction 2 2 Indicators 2 3 PC Configuration ...