Hioki ST5520, Instruction Manual, Page: 92 / 201

84
External Input/Output Terminal and Signals
ST5520
Pin
Signal
name
I/O Function Logic Pin
Signal
name
I/O Function Logic
1
START IN
Measurement
start
Edge
20
STOP IN
Measurement
end
Edge
2
(Not used) - - -
21
(Not used) - - -
3 INTERLOCK IN Interlock Level
22
LOAD0 IN
Panel number
selection
Level
4
LOAD1
IN
Panel number
selection
Level
23 LOAD2
IN
Panel number
selection
Level
5 LOAD3 IN
Panel number
selection
Level
24
(Not used) - - -
6
(Not used) - - -
25
(Not used) - - -
7 (Not used) - - -
26
(Not used) - - -
8
ISO_5V -
Isolated power
5 V
(-5 V) output
-
27
ISO_COM -
Isolated
common
signal ground
-
9
ISO_COM -
Isolated
common
signal ground
-
28
TEST OUT
During
measurement
Level
10
ERR OUT
Contact check
error
Short circuit
check error
Output voltage
error
Level
29
(Not used) - - -
11
UPPER FAIL OUT
Comparator
judgment
Level 30 PASS OUT
Comparator
judgment
Level
12
LOWER FAIL OUT
Comparator
judgment
Level
31
(Not used) - - -
13
(Not used) - - -
32
(Not used) - - -
14
(Not used) - - - 33 (Not used) - - -
15
(Not used) - - - 34 (Not used) - - -
16
(Not used) - - - 35 (Not used) - - -
17
(Not used) - - -
36
(Not used) - - -
18
(Not used) - - - 37 (Not used) - - -
19
(Not used) - - -
•
The connector frame is connected to the metal part on the instrument rear panel
as well as the power inlet protective ground terminal.
• When switching panel load operation using commands or key operation, fix pins
4 and 5 as well as 22 and 23 to ON or OFF. (p. 87)
•
Output timing of the TEST signal varies depending on the setting of the TEST
signal OFF timing.
Refer to “7.4 Setting the TEST Signal OFF Timing” (p. 101).