ABB IMDS014 Output Module
ABB IMDS014 Output Module
By default, the logical block size is set to 256 bytes for every block device in the system. The block size can be changed on a per device basis with the IOT command. The sector defines the unit of information for the media itself, as viewed by the controller. The sector size varies for different controllers, and the value for a specific device can be displayed and changed with the IOT command. When a disk transfer is requested, the start and size of the transfer is specified in blocks. 162Bug translates this into an equivalent sector specification, which is then passed on to the controller to initiate the transfer. If the conversion from blocks to sectors yields a fractional sector count, an error is returned and no data is transferred.
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