59
FINS Commands with Host Link Protocol Section 3-5
Communications Port
Completion Codes
The Communication Port Completion Code words will contain the FINS end
code after SEND(090), RECV(098), or CMND(490) has been executed.
If the Communications Port Enabled Flag turns OFF when operation is started
or SEND(090), RECV(098), or CMND(490) are executed, the contents of
these words will be cleared.
Flag Transitions
3-5-9 Timing of Commands to Host Computers
Commands sent to a host computer are transmitted with the timing shown
below.
Data Received from Host Computer
Word Content
A203 Communications Port Completion Code, Port No. 0
A204 Communications Port Completion Code, Port No. 1
A205 Communications Port Completion Code, Port No. 2
A206 Communications Port Completion Code, Port No. 3
A207 Communications Port Completion Code, Port No. 4
A208 Communications Port Completion Code, Port No. 5
A209 Communications Port Completion Code, Port No. 6
A210 Communications Port Completion Code, Port No. 7
A211 to A218 Reserved
Communications Port Enabled Flag
Network communications instructions
(SEND(090)/RECV(098)/CMND(490))
Communications Port Error Flag
Communications end code
Command 1
being
executed
Command 2
being
executed
Command 3
being
executed
End of previous
processing
Normal end
Normal end
(No unit corresponding to unit address)
Response Required
Host computer Command
Response
Serial Communications
Board/Unit
Communications Port
Enabled Flag
Command acknowledged Command completed
No Response Required
Host computer
Serial Communications
Board/Unit
Command
Command
Response
Communications Port
Enabled Flag
Command acknowledged Command completed
(1)
(2)
(1)
(2)
Command
Response
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