8.2 Details on Standard I/O Profile Commands
8.2.1 Asynchronous Data Read/Write Command (DATA_RWA: 20 Hex)
8-6
Response Data Details
RCMD
RWDC
CMD_STAT
Response data
Command Code
Setting Range
Setting Unit
(Byte 0)
20 (hex)
−
Description
Command code for standard I/O profile commands.
DATA_RWA (20 hex): Asynchronous Data Read/Write
Watchdog
Setting Range
Setting Unit
(Byte 1)
−
−
Description
Watchdog data for standard I/O profile commands.
This data is not used by the GW3100.
Command Status
Setting Range
Setting Unit
(Bytes 2 and 3)
−
−
Description
Command Status for Standard I/O Profile Commands
Bit 0: D_ALM; 0: Normal,1: Device alarm
Bit 1: D_WAR; 0: Normal, 1: Device warning
Bit 2: CMDRDY; 0: Command reception not possible,1: Ready to receive command
Bit 3: ALM_CLR_CMP; 0: ALM_CLR execution not completed,1: ALM_CLR execution
completed.
Bit 4: M2COM_ERR; 0: Normal, 1: Communications error with mapped M-II station
Bit 5: M2DEV_ERR; 0: Normal, 1: Error in mapped M-II station
Bits 8 to B: CMD_ALM; Not 0: Command error
Bits C to F: COMM_ALM; Not 0: Communications error
Response data
Setting Range
Setting Unit
(Bytes 4 and higher)
−
−
Description
Data area for responses from M-II slave devices.
The contents depends on the operating modes and parameter settings.