KEPCO BOP 5-20DL, Operator'S Manual

Page: 61 / 70

BOP 5-20DL 081915
3-27
3.7 INDICATOR AND FLAG LOGIC CIRCUIT
Digital Logic Circuits (IC15, IC16, IC17) as shown in Figure 3-28 are used in the BOP to drive
the front panel LEDs which indicate the prevailing operating mode:
E
O
LIMIT MODE (DS101)
I
O
LIMIT MODE (DS102)
E
O
MODE (DS103)
I
O
MODE (DS104)
REMOTE (DS105)
Together with these visual front panel indicators, TTL-compatible status flags are provided at the
Rear Programming Connector for the above BOP operating modes. All status flags available on
the rear programming connector indicate a logic ”0” If the BOP is operating in the indicated
operating mode, and a logic “1” if it is not.
FIGURE 3-28. INDICATOR LIGHT AND FLAG LOGIC
3043894
5
4
6
1
2
3
2
1
4
5
3
6
12
13
11
10
9
8
13
12
11
9
10
8
DS101
Eo LIMIT
DS102
I
o LIMIT
DS104
I
o MODE
DS103
Eo MODE
DS105
REMOTE/
OUTPUT ON-OFF
2
1
3 4
5
6
9
10
8
13
12
11
30
REMOTE V/
I
MODE SELECT
(NOT USED)
RN1
10
9
RN1
REMOTE
V/
I
MODE
SELECT
(NOT USED)
+5V
J204
P5
REMOTE/
LOCAL
(NOT USED)
FLAG
REMOTE/LOCAL
(NOT USED)
35
+5V
RN1
FLAG
I
o MODE
"1"
42
FLAG
Eo MODE
"0"
40
FLAG
I
o LIMIT
"1"
38
FLAG
Eo LIMIT
"1"
30
LAMP
DRIVERS
IC17
IC15
IC16
RN1
TO Eo COMP.
MODE SWITCH
(IC12) "0"
I
o
Eo
COMMON
+5V
"0"
"0" "1"
"1"
"0" "1"
"1"
"0"
"0"
"1"
"1"
"1"
"1"
"0"
"1"
"1"
"1"
FROM GPIB
INTERFACE
VIA BIT CARD
(WHEN
INSTALLED)
A
B
C
A B C
0 0 1
0 1 1
1 0 1
TO
I
o COMP.
MODE SWITCH
(IC12) "0"
PART OF REAR PROGRAMMING CONNECTOR
NOTES:
1. CONDITIONS SHOWN ARE:
Eo MODE, LOCAL MODE
2. FOR FLAGS:
"0" = ACTIVE
"1" = INACTIVE
3. NAND LOGIC AS FOLLOWS:
4. ON-OFF FLAG USED TO ENABLE
REMOTE OUTPUT ON-OFF
INDICATOR.
S103
MODE
J204
FROM
Eo/
I
o LIMIT
COMPARATORS
1
A1A1J2
REMOTE ON