Detailed flowcharts appendix d – Rockwell Automation 1770-KF2 Data Highway or Highway Plus Interface Module User Manual User Manual
Page 216
Detailed Flowcharts
Appendix D
DĆ12
Figure D.13
SEND Subroutine
SEND
Disable Processor
Interrupts
Enable UART
Transmit Interrupt
UART
Transmitter
Empty
?
Yes
Disable UART
Transmit Interrupt
No
SLEEP
Suspend at
TXWAIT
Output Byte
to UART
Enable Processor
Interrupts
Return
Indivisible Zone
Input
•
Link Data Byte
Common
•
TXWAIT: A Sleep Variable
11669
NOTE:
a Z80 S10.
This figure assumes the use of
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