IBM 1710 Manual page 53

External Interrupt (48-59). These twelve indicators
are available for immediate detection of process dis-
turbances. These are turned on by a contact closure in
the process. They are turned off by program interroga-
tion.
Output Record Mark (6040) This indicator is turned
on when a leading record mark (first character of a
control code) is transmitted from core storage to
IODR.
It is turned off by program interrogation.
End of Message (6041). This indicator is turned on
when a control code record mark is transmitted from
core storage to
IODR.
It is turned off by program inter-
rogation.
Mode Shift (6042). This indicator is turned on when
a control code 2 is transmitted from core storage to
IODR.
It is turned off by program interrogation.
SlOe Output Error (6043). This indicator is turned
on and an interrupt is initiated when a parity error is
detected by a Process Operator output unit. It is turned
off by program interrogation.
Data Ready (6044). This indicator is turned on and
an interrupt is initiated when a character has been sent
to
IODR
from a Process Operator input unit. It is turned
off by program interrogation.
Alert (6045). This indicator is turned on when any
of the following indicators have been turned on:
Output Record Mark 6040
End of Message 604]
Mode Shift 6042
slOe Output Error 6043
Data Ready 6044
It is turned off only when all of the indicators listed
above are off.
Analog Input
Instruction
I-Time
E-Time
14
-I
160
~sec
Jlo.--_ _ --(
._____Read 4 Digits, 80
~sec
_ _ ruI
f
TAS
~~~--------~
Multiplexer
Busy (29)
Multiplex
If
50 ms
Complete (40) _ _ _ _ _ _ _ _ _ _ _ _ _ --'
Multiplex Complete
Interrupt
Figure 30. Analog Input Interrupt Timing
J
~ r-160~sec
Analog Output
n
Instruction ______ '-_ _ _ _
TAS
___
~n
. . . . . __
Multiplexer
Busy (29)
----~~~'--------------~J
Multiplex
Complete (40)----------------....J
Multiplex Complete
Interrupt
l<'igure 31. Analog Output Interrupt Timing
Sloe Not Busy (6046). This indicator is turned on
when the slOe channel is free to accept an instruction
or an interrupt. It is turned off when the Sloe channel
is busy.
Unit Response (6070-6089). This indicator is turned
on and an interrupt is initiated when any Process Oper-
ator Unit is ready to transmit or receive data.
It
is
turned off when all Process Operator Units attached to
the system are in a not ready condition.
PYocess Branch (70-89). Twenty
PBI'S
(Process Branch
Indicators) are available for program sensing of condi-
tions in the process area. These indicators are turned
on and off by the closing and opening, respectively, of
their contacts in the process.
~
t--160
~sec
Contact Operate
n
Instruction ______ -' .... _ _ _ _
TAS
_____
~n~
_____ __
Multiplexer
Busy (29)
Multiplex
fl
50ms
Complete (40) _ _ _ _ _ _ _ _ _ _ _ _
~
Multiplex Complete
Interrupt
Figure 32. Contact Operate Interrupt Timing
f
J
I
53