PG7000™ OPERATION AND MAINTENANCE MANUAL
© 1998-2008 DH Instruments, a Fluke Company
Page 132
4.2.1.1
COM1
The PG7000 COM1 RS232 interface is located on the PG7000 Platform rear
panel. It is a 9-pin female DB-9F connector configured as a DCE device. Data is
transmitted out of PG7000 using pin 2, and is received on pin 3. This allows a
standard pin-to-pin DB-9M to DB-9F RS232 cable to be used to connect to a
DTE host. Handshaking is NOT required or supported.
COM1 RS232 commands must be terminated with at least a single carriage
return character, while line feed characters are ignored. All RS232 responses
from PG7000 are terminated with a carriage return character and a line feed
character (either
<CR><LF>
or
<LF><CR>
see Section 3.11.5.1).
Table 22
.
COM1 DB-9F Pin Designation
IBM PC/XT DB-9F CONNECTIONS
IBM PC/XT DB-9M to PG7000 DB9F CONNECTIONS
DB-25M
DB-9F
DB-9M
DB-9F
2 3
3
3
3 2
2
2
7 5
5
5
4.2.1.2
COM2 AND COM3
The PG7000 COM2 and COM3 RS232 interfaces are located on the PG7000
Platform rear panel. They are 9-pin male DB-9M connectors configured as a
DTE device. Data is transmitted out of PG7000 using pin 3 and is received on
pin 2. This allows a standard pin-to-pin DB-9F to DB-9M RS232 cable to be
used to connect to a DCE slave. Handshaking is NOT required or supported.
COM2 and COM3 are used by the PG7000 Platform to communicate with external
devices. An external barometer and/or vacuum gauge can be connected to COM2
(see Sections 3.11.5.4, 3.11.5.5). An automated pressure control component and/or
AMH automated mass handler can be connected to COM3.
Table 23
.
COM2 and COM3 DB-9M Pin Designation
PIN #
FUNCTION
DESCRIPTION
2
RxD
This pin accepts serial data from another PG7000 or another
device.
3
TxD
This pin transmits serial data from the PG7000 to another
PG7000 or another device.
4
DTR
Data Terminal Ready. Held at 5 Volts.
5
Grn
This pin is the common return for the TxD and RxD signals.
IBM PC/XT DB-25F to DB-9M
CONNECTIONS
IBM PC/XT DB-9F to PG7000 DB9M CONNECTIONS
DB-25F
DB-9M
DB-9F
DB-9M
2 3
3
3
3 2
2
2
7 5
5
5