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4--8--3
I/O Allocations
I/O Bits
Bit
IR 000
(Input from thumbwheel switches)
0
00
Write data 10
for E5AF
01
02
03
1
04
Write data 10
for E5AF
05
06
07
2
08
Write data 10
for E5AF
09
10
11
3
12
Write data 10
for E5AF
13
14
15
Bit
IR 005
Output of process value to segments
00
a through g of the 7-segment display
th
h
f th 7
01
(1st digit)
(1st digit)
02
03
04
05
06
07
Not used.
08
Output of process value to segments
a through g of the 7-segment display
th
h
f th 7
09
(2nd digit)
(2nd digit)
10
11
12
13
14
15
Not used.
The following I/O bits are used in the IR area of the PC to transfer signals
and data between control/display devices and the PC and between the PC
and the E5AF.
IR 002
(control inputs)
Execution control input
Not used
Read/write control input
Not used.
VAL control input
g
Output of process value to segments
t di
l
a through g of the 7-segment display
th
h
f th 7
(3rd digit)
(3rd digit)
Not used.
g
Output of process value to segments
t di
l
a through g of the 7-segment display
th
h
f th 7
(4th digit)
(4th digit)
Not used.
IR 003
(Input from E5AF)
Not used.
BUSY signal input
Read data
(processes value)
(
l
from E5AF
from E5AF
IR 006
g
Not used.
t di
l
g
t di
l
Output to BUSY indicator
Not used
Output to VAL indicator
Section 4--8
IR 004
(Output to E5AF)
Write data (set value
(
1) for E5AF
1) f
E5AF
Data select output to
E5AF
E5AF
Not used.
VAL control value
)
Not used.
IR 007
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