11.3 MECHATROLINK-III I/O Module Settings
11.3.4 I/O Command Details
11-27
SIZE: Read Data Size
ADDRESS: First Read Address
DATA: Data
Execution and Operating Procedure
1.
Make sure that the following condition is met.
2.
Set the following parameters.
• MODE/DATA_TYPE (Mode/Data Type)
• SIZE (Read Data Size)
• ADDRESS (First Read Address)
Setting Precautions
Make any necessary changes to MODE/DATA_TYPE (Mode/Data Type), SIZE (Read Data Size), or
ADDRESS (First Read Address) before executing the Read Memory command or during the same
scan that the I/O Command register is set to 7. Do not change these settings during execution of the
Read Memory command.
3.
Set the I/O Command register to 7 to execute the Read Memory 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 = 7 (Read Memory)
2 Command Status bit 2 (CMDRDY) = 1
3 MODE/DATA_TYPE must be the same in the command and response.
4 SIZE must be the same in the command and response.
5 ADDRESS is 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.
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