Omron SYSMAC CJ - REFERENCE MANUAL 08-2008 Reference Manual page 950

Step Instructions
Variations
Applicable Program Areas
Operand Specifications
Description
1,2,3...
910
When defining the beginning of a step, a control bit is specified as follows:
STEP(008)
B
When defining the end of a step a control bit is not specified as follows:
STEP(008)
Variations Executed Each Cycle for ON Condition
Executed Once for Upward Differentiation
Executed Once for Downward Differentiation Not supported.
Immediate Refreshing Specification
Block program Step program
areas
Not allowed OK
Area
CIO Area
Work Area
Holding Bit Area
Auxiliary Bit Area
Timer Area
Counter Area
DM Area
EM Area without bank
EM Area with bank
Indirect DM/EM
addresses in binary
Indirect DM/EM
addresses in BCD
Constants
Data Registers
Index Registers
Indirect addressing
using Index Registers
SNXT(009)
SNXT(009) is used in the following three ways:
1. To start step programming execution.
2. To proceed to the next step control bit.
3. To end step programming execution.
B: Bit
Subroutines
areas
Not allowed
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W00000 to W51115
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,IR0 to ,IR15
–2048 to +2047 ,IR0 to –2048 to +2047 ,IR15
DR0 to DR15, IR0 to IR15
,IR0+(++) to ,IR15+(++)
,–(– –)IR0 to, –(– –)IR15
Section 3-22
STEP(008)/
SNXT(009)
Not supported
Not supported.
Interrupt tasks
Not allowed
B