6 management to resume slave cpu synchronization – Yaskawa MP2300S Basic Module User Manual

Page 302

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7.3 Operation

7.3.6 Management to Resume Slave CPU Synchronization

7-24

7.3.6 Management to Resume Slave CPU Synchronization

The slave CPU synchronous process is automatically carried out when its execution requirements are met.
Here, in a transient state from slave CPU asynchronous to slave CPU synchronous state, the following operations are
carried out by the system:

• Start of timing adjustment of the slave scan cycle
• When SVB-01 is attached to a optional slave slot, the MECHATROLINK communication is reset

As a result operation of the slave side application is affected as follows:

• One scan with a longer cycle than the setup time occurs
• When a servo connected to the SVB-01 is running, its axis stops and an alarm occurs

To avoid these impacts (to avoid automatic recovery to the slave CPU synchronous state), use the slave side application
to operate a control bit “SLVSC (slave CPU synchronous resume control)”.
Operating this bit allows you to control the synchronous process.

bit7

bit6

bit5

bit4

bit3

bit2

bit1

bit0

Unused

SLVSC

bit15

bit14

bit13

bit12

bit11

bit10

bit9

bit8

Unused

Name

Definition

Description

SLVSC

0

Resume enable

When out of slave CPU synchronization, the slave CPU synchroniza-
tion is automatically resumed.

1

Resume disable

Even when out of slave CPU synchronization, the operation continues
in an asynchronous state.

High

Low

OWxxxx+0

OWxxxx+1

OWxxxx+2

7 6 5 4 3 2 1 0

MP2300S (slave)

[Output register]

Scan counter

unused

Control bit

Data 1

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