YASKAWA SVC - Page 595

11.3 MECHATROLINK-III I/O Module Settings
11.3.4 I/O Command Details
11-22
 NO: Parameter Number
 SIZE: Parameter Size (Bytes)
 PARAMETER: Parameter Data
 Execution and Operating Procedure
1. Make sure that the following condition is met.
2. Set the following parameters.
• NO (Parameter Number)
• SIZE (Parameter Size)
• PARAMETER (Parameter Data)
Setting Precautions
Make any necessary changes to NO (Parameter Number), SIZE (Parameter Size), or PARAMETER
(Parameter Data) before executing the Write Parameter command or during the same scan that the I/
O Command register is set to 4. Do not change these settings during execution of the Write Parame-
ter command.
3. Set the I/O Command register to 4 to execute the Write Parameter command.
 Confirming Completion of the Command
Use the following information to confirm that the command has been completed.
No. Execution Condition Confirmation Method
1
I/O command execution must be com-
pleted.
Command Status bit 2 (CMDRDY) = 1
No. Confirmation Method
1 I/O Command Response register = 4 (Write Parameter)
2 Command Status bit 2 (CMDRDY) = 1
3 NO must be the same in the command and response.
4 SIZE must be the same in the command and response.
5 PARAMETER must be the same in the command and response.
1. If the command is not completed within 5 seconds after it is executed, bit 0 in the Master Sta-
tus register changes to 1 (TIMEOUT).
2. When bit 0 (D_ALM) or bit 1 (D_WAR) in the Command Status register is 1, check the error
details with the application and perform the stop processing. The system will not perform stop
processing.
Important