IBM 2702 Information Manual page 43

Channel End, Device End, and Unit Exception Status
Command
IBM Terminal Control-Type I IBM Terminal Control-Type II
Telegraph Terminal Control-Type II
Telegraph Terminal Control-Type I
(1050,60, and 70. 2740,
( 1030.)
(TTY 33 and 35.)
(TTY 28 and 2712 M2.)
and 2741 with Interrupt)
Read
~
received (Except far 2741 with Interrupt).
EO T character received.
Figs H Ltes. received
N received while in control
(For World Trade operation the
Inhibit
control mode.
H may be any character A-Z,
custamer selected)
Search
Invalid command.
Invalid command.
rigs H Ltrs. recei ved.
Any Write
The addressed communications I ine was receiving when a write command was accepted at initial selection.
Type Cmd.
Prepare A Halt I/O was issued to the addressed communications line before it received a valid start bit.
Enable
Switched network: A Halt
Switched netwark: A Halt
Non-Switched network: A
I/O was issued before the
I/O was issued before the
Holt I/O was issued before
attached data set establ ished
attached data set establ ished
the enable latch was turned
a connect ion
a connect ion.
on.
Non-Switched network: A
Halt I/O was issued before
the enable latch was turned
ON.
Dial A Halt I/O was issued before
A Halt I/O was issued before
all the digits necessary to
all the digits necessary ta
complete the call were sent.
complete the call were sent.
Figure 2-9. Ending Status CE, DE, and UE (Part 1, 5/5)
Command Channel End, Device End, and Unit Exception Status
Read
EOT character received.
Search
Set Mode Halt I/O received prior to ACW being accepted.
Write or
The addressed communication I ine was receiving when a Write or Poll comm"nd was accepted at initial selection.
Poll
Prepare
Halt I/O received before the receiving bit is set.
Address
Halt I/O received before end bit is set.
Prepare
Enable
Switched Network: a Halt I/O was issued befare the attached data set establ ished cannection.
Dial
A Halt I/O was issued before all the digits necessary to complete the call were sent.
Figure 2-9. Ending Status CE, DE, and UE (Part 2, BSC)
Operations 2 - 27