GE PAC 4020 System Manual page 17

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14
SIGNAL SOURCE
API
FLIP-FLOPS
PROGRAM LOAD
PROGRAM LOAD
AUTOMATIC RESTART
CYCLES TIMER PULSES
EXTERNAL PULSE SOURCE
PERIPHERAL
DATA
REQUESTS
(Non-Inhibitable)
-
-- --
---
--
--
-- --
--
--
--
Variabl~J
API STALL ALARM PULSE SOURCE
Positioiy
y
----
(lnhibitable) TIMER ECHO
--
PULSE ECHO (KWHR, ETC.)
--
ANALOG SCANNER READY
- -
BULK MEMORY TRANSFER RDY
- -
MULTIPLE OUTPUT READY
- -
PERIPHERAL
END OF
RECORD/
TABLE ECHO
PROCESS
CONTACTS
SPARES
--
--
-- --
--
--
--
-- --
---
{ -- -- --
1
>
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3
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}
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7
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9
>
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I - -
15
~
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>
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1.1
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>
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'
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}
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Figure 4
USE
"
TIM" Control of Program Load
To Recovery Routine
To decrement memory (DMT)
locations for pulse accumulations
"TIM/
TOM"
Control Words
DMT Pulse Accumulation
To Clock Program
To Pulse Count Program
To Driver Programs
For Scanners,
Controllers,
And Peripherals
To Special
Action Programs
No Operation (NOP)
Typical Allocation of Inputs lo API Module

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