Xantrex Technology ENET-XFR RS-232 Mode Troubleshooting Tips, 11 RS-232 Mode Tips, TM-XR9B-01XN

Troubleshooting

RS-232Mode Troubleshooting Tips

Table 3-11 RS-232Mode Tips

CannotSymptomestablish	PossibleUsing straightCausesthrough	CorrectiveUse a Null ModemActionscable
communication	RS-232cable instead of
	Null Modem cable
	Loose cables	Ensure that the cables are securely connected to
		the computer and the power supply.
	Baud rate mismatch	Select a baud rate that matches the instruments
		settings. See “Baud Rate Selection” on page 2–
		18 for details changing this setting.
	Trying to communicate via	Most computers have two COM ports, COM1
	the wrong COM port	and COM2, so ensure you have selected the
		correct COM port.
	The interface card is	Reconfigure the interface card for RS-232
	configured for Ethernet	communications. See “Configuring for Ethernet
	communications	or RS-232” on page 2–12 for details.
RS-232and/or Ethernet Mode Troubleshooting Tips
Table 3-12RS-232 and/or Ethernet Mode Tips
InstrumentSymptomnot	PossibleThe unit isCausesin local mode	CorrectivePut the unit intoActionsremote mode by sending the
responding to new		command REN ON.
user settings
The output is	The output is off	Send the command OUT ON
displaying zero
volts and zero amps,	The output has tripped due	the condition that has caused the fault,
but the setpoints are	to an OVP, or foldback	and send the command RST
non-zero	protection event

TM-XR9B-01XN 3–23