RFL Electronics 9780 - Establishing Communications; Introduction; Section 16. Using Rs-232 Ports to Access Rfl 9780 Soe Module

RFL 9780 16 - 1 RFL Electronics Inc.
April 8, 2003 (973) 334-3100
SECTION 16. USING RS-232 PORTS TO ACCESS RFL 9780 SOE
MODULE
16.1. INTRODUCTION
This section contains information on how to view the RFL 9780 sequence-of-events (SOE) log, and
Reflected Power readings using the RS-232 ports. The SOE log can be viewed after a physical
connection has been made and communication has been established between the RFL 9780 and a PC.
16.2. ESTABLISHING COMMUNICATIONS
A user can communicate with the RFL 9780 through the RS-232 connector on the front panel (DCE,
data communication equipment) or rear panel (DTE, data terminal equipment) of the RFL 9780. Either
a dumb terminal or a personal computer equipped with terminal emulation software can be used for
communication. The front panel port has priority over the rear port. This allows for a permanent
connection to the back of the unit, which will be overridden when the user temporarily connects a
terminal to the front of the unit.
Once connected, APRIL (Asynchronous Programming and Remote Interrogation Language) can be
used to view the status of the RFL 9780 and review the sequence of events log. Because APRIL is
menu based, you do not have to memorize the commands. Help screens can always be displayed by
pressing the [H] key.
16.2.1. PHYSICAL CONNECTIONS
The front port of the 9780 is typically connected directly to a terminal or PC using a standard (straight-
through) connector as shown in Figure 16-1. The rear port of the 9780 is intended for connection to
stand-alone modem or multi-port switch (such as the RFL 9660 Digital Switch) using a standard
(straight-through) connector as shown in Figure 16-2.
Figure 16-1. Making connections from the PC to the RFL 9780 front connector
2
3
4
5
2
3
4
5
3
2
20
7
Not used 1
Transmit Data (TxD) (output) 2
Receive Data (RxD) (input) 3
Data Terminal Ready (DTR) (input) 4
Signal Common 5
Not Used 6
Not Used 7
Not Used 8
Not Used 9
9780 FRONT CONNECTOR TO TERMINAL OR PC
Female DB-9 Male DB-9 Female DB-25 Female
Cable Assembly