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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.
SNXT(09) 12800
00001 (SW1)
STEP(08) 12800
SNXT(09) 12801
STEP(08) 12801
SNXT(09) 12802
STEP(08) 12802
SNXT(09) 12803
STEP(08)
Process A
Process B
Process C
00002 (SW2)
00003 (SW3)
00004 (SW4)
Process A started.
Process A reset.
Process B started.
Process B reset.
Process C started.
Process C reset.
Address Instruction Operands Address Instruction Operands
00000 LD 00001
00001 SNXT(09) 12800
00002 STEP(08) 12800
Process A
00100 LD 00002
00101 SNXT(09) 12801
00102 STEP(08) 12801
Process B
00100 LD 00003
00101 SNXT(09) 12802
00102 STEP(08) 12802
Process C
00200 LD 00004
00201 SNXT(09) 12803
00202 STEP(08) ---
Step Instructions Section 5-24