Models 947, 948 and 960 Leak Detectors Operations and Service Manual
D-4
D.2.3 Interface (J122) for Optional Universal Remote Control
The optional Universal Remote Control connects to J122, a DB9 connector. The serial
communication cable from the Universal Remote Control is connected to J122 on the back
of the 947/948/960. Refer to the Universal Remote Control manual for further information.
Table D-4 provides details about this connection.
D.2.4 Host Serial Port (J123)
The Host Serial Port connector is used to interface the 947/948/960 to a PLC or computer
via an RS-232 DB25 connection. Table D-5 provides details about this connection.
Table D-4
Optional Interface (J122) for Optional Universal Remote Control
Pin
Name
Signal Description
Output
Input/Level
1
Shield
System Ground
2
DATA IN
Data to the host from a Remote Control
Input
Logic
3
DATA OUT
Data from the host to a Remote Control
Output
Logic
5
+24 VDC RET
24 Volt Return
System Ground
8
DATA GROUND
Digital Ground
System Ground
9
+24 VDC
24 VDC supply from the host
Input
Table D-5
Optional Host Serial Port RS-232 Interface (J123)
Pin
Signal Name
Description
Input/Output
1
Shield
Shield for J123
System Ground
2
RXD
Receive Data
Input
3
TXD
Transmit Data
Output
4
CTS
Clear To Send
Input
5
RTS
Ready To Send
Output
6
DTR
Data Terminal Ready
Output
7
Data Ground
Signal Return for J123
20
DSR
Data Set Ready
Input
Summary of Contents for 948
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