13.3 Registers and Register Details
[bit 11] RIF (Receive interrupt flag):
This bit is set when receive interrupt is occurred.
0
1
This bit is cleared by writing '0' to this bit or after the extended intelligent I/O service has been served.
This bit is written '0' only.
[bit 10] TIF (Transmit interrupt flag):
This bit is set when transmit interrupt is occurred.
0
No transmit interrupt request
1
Have transmit interrupt request
This bit is cleared by writing '0' to this bit or after the extended intelligent I/O service has been served.
This bit is written '0' only.
[bit 9] TSL (Transmit limit):
This bit is set when the maximum number of data bytes that can be transmitted in one communication
frame has been reached. And this bit is cleared when next communication frame starts.
[bit 8] EOD (End of data):
This bit is set when the number of data bytes specified by telegraph length field has been transferred
completely. It means communication ends normally. This bit is cleared when next communication frame
starts.
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Chapter 13: IE Bus
No receive interrupt request
Have receive interrupt request
MB90580 Series