Yaskawa Sigma-5 User Manual: MECHATROLINK-II Commands Manuel d'utilisateur Page 40

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3.2 Commands Details
3-9
3
Commands for Preparation Process
3.2.4 Start Synchronous Communications (SYNC_SET: 0DH)
This section describe how to start synchronization to change a communications phase from phase 2 to phase 3.
When SYNCMOD bit of the COM_MOD of CONNECT command is set to 1, the communications phase will
change from phase 1 to phase 3 at the moment the connection is established. In this case, it is not necessary to
send a SYNC_SET command.
(1) SYNC_SET Command (0DH)
The specifications of the SYNC_SET command are described below.
Byte
SYNC_SET
Description
Command Response
10DH 0DH
Phases in
which the
command can
be executed
Phase 2
Synchronization
classification
Asynchronous
command
2ALARM
Processing
time
Communications
cycle or more
(Within 5 s)
Subcommand Cannot be used
3
STATUS Starts synchronous communications. Switched from phase 2 to phase 3.
Synchronization is made at the WDT changing edge. However, if WDT
errors are masked by parameter Pn800.0, processing is completed when
this command is received.
During phase 3, the slave ignores this command and returns a normal
response without a warning.
If the slave station in Servo ON status receives this command in phase 2,
the slave station enters Servo OFF status.
At occurrence of the following alarms and warnings, this command must
be transmitted to restart synchronous communications.
- Command warning 1 (A.95A) occurs when this command is used in
phase 1
- MECHATROLINK-II synchronization Error (A.E50)
- MECHATROLINK-II synchronization failed (A.E51)
- MECHATROLINK-II Communications Error (A.E60)
- MECHATROLINK-II Transmission Cycle Error (A.E61)
- Command warning 1 (A.95A) occurs when this command is used while
operating the servo using SigmaWin or a digital operator.
4
5
6
7
8
9
10
11
12
13
14
15
16 WDT RWDT
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