DH Instruments PPC4, Operation And Maintenance Manual

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PPC4™ OPERATION AND MAINTENANCE MANUAL
© 2009 DH Instruments, a Fluke Company Page 132
Table 20. COM2 DB-9F Pin Designations
PIN # FUNCTION DESCRIPTION
2 RxD This pin transmits serial data from the PPC4 to a device.
3 TxD This pin accepts serial data from the external device.
4 DTR This pin is Data Terminal Ready (DTR) (held at + 5 V).
5 Grn This pin is the common return for the TxD and RxD signals.
6.3.1.3 RS232 Command Testing
An easy way to test RS232 communications independent of custom software is to
use the Windows Hyperterminal found in the accessories group under All
Programs (See Figure 25)
Figure 25. Windows selection of Hyperterminal
Hyperterminal must be configured to communicate with the PPC4 using the
RS232 COM1 communication settings accessed through the PPC4 front panel
(see Section 5.7.9.1 for the Advanced Interface and Section 4.5.2.1 for the Basic
Interface). Refer to the following series of steps to configure Hyperterminal
assuming that the PPC4 is connected to COM4 of a host PC using a baud rate of
2400, 7 data bits, event parity and 1 stop bit.
Figure 26 is displayed when
Hyperterminal is run for the first
time. Enter an easily identifiable
name to reference the
communications session. Future
Hyperterminal sessions are initiated
by selecting the named session.
Figure 26. Hyperterminal Initial Display