YASKAWA SVC - Page 599

11.3 MECHATROLINK-III I/O Module Settings
11.3.4 I/O Command Details
11-26
Read Memory Command
Reads data in the internal memory of the I/O Module.
 Command Format
 MODE/DATA_TYPE: Mode/Data Type
• MODE: Read Mode
0: Reserved for system.
1: Volatile memory
Reads data from volatile memory such as the SRAM.
2: Non-volatile memory
Reads data from non-volatile memory such as the EEPROM.
All other bits: Reserved for system.
• DATA_TYPE: Data Type
0: Reserved for system.
1: Byte data
2: Short data
3: Long data
4: Longlong data
All other bits: Reserved for system.
Some I/O Module devices do not support the Read Memory 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 Memory (= 7) IW Read Memory (= 7)
Not used. Master Status
OW + 1
Command Control
IW + 1
Command Status
OW + 2 Not used. IW + 2 Not used.
MODE/DATA_TYPE MODE/DATA_TYPE
OW + 3
SIZE
IW + 3
SIZE
OW + 4 ADDRESS Low IW + 4
ADDRESS Low
High
High
OW + 5 ADDRESS Low IW + 5
ADDRESS Low
High
High
OW + 6 IW + 6
DATA Low
High
OW + 7 IW + 7
DATA Low
High
•
•
•
•
•
•
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
MODE DATA_TYPE
Important