Host Serial Port J123 Pinouts - Agilent Technologies 947 Betriebs- Und Servicehandbuch

Models 947, 948 and 960 Leak Detectors Operations and Service Manual
18 MSD D
20, 21 +24 VDC for Output Sourcing
24, 25 Ground for J121

2.3.3 Host Serial Port J123 Pinouts

The Host Serial Port is used to interface the 947/948/960 to a PLC or host computer via an
RS-232 connection. Table 2-4 provides details about the connection.
J123 connections are referenced to the chassis ground and are not isolated. Electrical
characteristics comply with EIA/TIA Standard EIA/TIA-232-E.
Pin on
J123
Table 2-3 J121 Output Summary
Table 2-4 J123 Pinout Summary
Signal Name
1 Shield
2 RXD
3 TXD
4 CTS
5 RTS
6 DTR
7 Data Ground
20 DSR
Active High
Description
Shield for J123, System Ground
RS-232 Data
RS-232 Data
RS-232 Flow Control
RS-232 Flow Control
RS-232 Flow Control
Signal Return for J123
RS-232 Flow Control
BCD Leak Rate
2-11