Delta DVP-ES2 User Manual download pdf (Page 630)

100

101

DVP-ES2EX2/SS2/SA2/SX2/SE Operation Manual - Programming

STL diagram. However, there are restrictions on some of the instructions. Care should be taken

when using the instructions listed in the table below.

Basic Instructions Applicable in a Step

Basic instruction

Step point

LD/LDI/LDP/LDF

AND/ANI/ANDP/ANDF

OR/ORI/ORP/ORF

INV/OUT/SET/RST

ANB/ORB

MPS/MRD/MPP

MC/MCR

Primary step point/ General step point Yes Yes No

General output Yes Yes No

Diverging step

point/

Converging

step point

Step point transfer Yes Yes No

1. DO NOT use MC/MCR instruction in the step.

2. DO NOT use STL instruction in a general subroutine or interruption subroutine.

3. CJ instruction can be used in STL instruction, however this is not recommended because the

actions will thus become more complicated.

4. Position of MPS/MRD/MPP instruction:

Ladder diagram:

MPP

MRD

MPS

BUS

LD X0

Instruction code:

STL Sn

LD X0

MPS

AND X1

OUT Y1

MRD

AND X2

OUT M0

MPP

AND X3

OUT Y2

Explanation:

MPS/MRD/MPP instruction

cannot be used directly on

the new bus. You have to

execute LD or LDI

instruction first before

applying MPS/MRD/MPP.

Other Points to Note:

1. The instruction used for transferring the step (SET S□ or OUT S□) are suggested to be

executed after all the relevant outputs and actions in the current step are completed.

The execution results by the PLC are the same. However, if there are many conditions or

actions in S10, it is recommended to modify the diagram in the left into the diagram in the right,

which executes SET S20 after all actions are completed. The sequence will be more

understandable and clear with this modification.

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Delta DVP-ES2 User Manual Page 630

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