YASKAWA SVC - Page 596

11.3 MECHATROLINK-III I/O Module Settings
11.3.4 I/O Command Details
11-23
11
Appendices
Read Non-volatile Parameter Command
Reads an I/O Module parameter from non-volatile memory.
 Command Format
 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)
Setting Precautions
Make any necessary changes to NO (Parameter Number) or SIZE (Parameter Size) before executing
the Read Non-volatile Parameter command or during the same scan that the I/O Command register
is set to 5. Do not change these settings during execution of the Read Non-volatile Parameter com-
mand.
3. Set the I/O Command register to 5 to execute the Read Non-volatile Parameter com-
mand.
Some I/O Module devices do not support the Read Non-volatile Parameter command. Refer to
the product specifications of the I/O Module for details.
Output Registers Input Registers
7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0
OW
Read Non-volatile
Parameter (= 5)
IW
Read Non-volatile
Parameter (= 5)
Not used. Master Status
OW + 1
Command Control
IW + 1
Command Status
OW + 2
NO
IW + 2
NO
OW + 3 SIZE IW + 3 SIZE
Not used. Not used.
OW + 4 IW + 4
PARAMETER Low
High
OW + 5 IW + 5
OW + 6 IW + 6
OW + 7 IW + 7
••
••
••
No. Execution Condition Confirmation Method
1
I/O command execution must be com-
pleted.
Command Status bit 2 (CMDRDY) = 1
Important