Operation Of Slave Mp3000 - YASKAWA SVC User Manual

Setting the Restarting Method for Slave CPU Synchroniza-
tion
You can set the SLVSC (Slave CPU Synchronization Restart Control) command control bit in
the slave application to specify whether to restart slave CPU synchronization automatically
when synchronization is lost.
ON (SLVSC = 1):When slave CPU synchronization is lost, the system operates asynchronously.
OFF (SLVSC = 0): When slave CPU synchronization is lost, it is automatically restarted.
OW +0
OW +1
OW +2
OW +3
Bit 7
Bit 15
Name
SLVSC
6.6.10

Operation of Slave MP3000

The following table gives the slave MP3000 operation when the following operations are per-
formed during slave CPU synchronization or when an error occurs.
The power supply to the master is turned OFF.
The MECHATROLINK communications cable is dis-
connected.
The master assignment is deleted.
A watchdog timer timeout occurs at the master.
A transmission error occurs.
(For example, the transmission cycle is disrupted by
a MECHATROLINK communications error.)
The high-speed scan setting is changed at the mas-
ter or slave.
The MECHATROLINK definitions are saved at the
master.
MP3000 self configuration is performed for the mas-
ter or slave.
The master or slave is switched between CPU RUN
and CPU STOP.
In this case, use the application programming to control the timing of chang-
ing back to slave CPU synchronization.
Output Registers
7 6 5 4 3 2 1
(Not used.)
Command Status
Data 1 Low
High
Data 2 Low
Bit 6 Bit 5
Bit 14 Bit 13
Definition
1 Restarting prohibited.
0 Restarting allowed.
Item
0
Bit 4 Bit 3
Not used.
Bit 12 Bit 11
Not used.
If slave CPU synchronization is lost, operation continues
asynchronously.
If slave CPU synchronization is lost, it is automatically
restarted.
Operation will continue asynchronously.
An input error will occur, but the scan operation is not
affected.
High-speed scan processing may be disrupted.
Asynchronous operation will be used.
(This is because MECHATROLINK communications are
reset.)
Note: If the SLVSC control bit is set to 0, slave CPU
synchronization will be restarted after MECHA-
TROLINK communications are restarted.
Operation with slave CPU synchronization will con-
tinue.
6.6 Slave CPU Synchronization

6.6.10 Operation of Slave MP3000

Bit 2 Bit 1
SLVSC
Bit 10 Bit 9
Description
Operation
Bit 0
Bit 8
6
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