32
3 Interface
3
2
2
R
R
S
S
-
-
2
2
3
3
2
2
C
C
S
S
e
e
r
r
i
i
a
a
l
l
I
I
n
n
t
t
e
e
r
r
f
f
a
a
c
c
e
e
P
P
o
o
r
r
t
t
This interface port is an asynchronous half duplex serial interface based on EIA-232. This interface
provides communication with external devices such as computers (NULL-MODEM mode direct connections).
Through this port, the LS-R700 transmits leak test data after every test execution.
The Leak Tester does not accept any commands from the host; it only transmits leak test data.
For setting the communication parameters, go to:
System > System Settings > RS-232C
2.1 RS-232C Interface
Data transmission
Half duplex
Baud rate
9600, 19200, 38400
Start bit
1 bit
Data length
8 bit
Parity
Non-parity
Stop bit
1 bit
Connector pin assignments (DB-9P)
Pin #
Name
Function
2
RxD
Received Data
3
TxD
Transmitted Data
5
SG
Signal Ground
2.2 Interface Cable Wiring Example
Interface cable wiring diagram (COM1)
LS-R700
9 pin
External Device
9 pin
2
3
5
FG
SD(TxD)
RD(RxD)
SG
2
3
7
8
5
