Rockwell Automation 1400-SP PowerMonitor Software - Manual (Page 64)

Chapter 8
Troubleshooting
8–2
ERROR MESSAGE SOLUTION POSSIBLE CAUSE
(CONTINUED)
Remote Device Errors
UNIT NOT RESPONDING
MODEM CONNECTED...UNIT NOT
RESPONDING
Transmit Modem Errors
(ie. modem at computer end)
MODEM NOT RESPONDING
NO DIAL TONE
UNDEFINED MODEM CODE #### (modem
error code)
Receive Modem Errors (ie modem at remote site)
MODEM CARRIER LOST = ####
NO CARRIER PRESENT
ERROR
LINE BUSY
NO ANSWER
2. Fault with the communications link between
the computer and the Powermonitor (including
communications wiring, modem configuration
or correct operation, etc.)
Modem Connection, Configuration, or
Operation. Perform the following checks:
Make sure a 25 pin conductor cable is installed
between the computer and the modem.
Make sure a 25 pin conductor cable is installed
between the modem and the RS-232C to RS-485
converter device at the remote site(s)
Check that the supply power is applied to the
modem at the computer, the modem at remote site,
and RS-232C to RS-485 converter at remote site(s)
Make sure DATA+ and DATA– lines on the
converter are connected to DATA+ and DATA–
lines on each Powermonitor.
Verify that the correct Communications Mode
(RS-485) is selected at Powermonitor(s).
Check configuration of modem
Verify that the modem at remote site has not been
interrupted for any reason (ex. disconnected, power
failure, etc.)
3. Incorrect baud rate at the Powermonitor Check baud rate of Powermonitor from its front
panel. Confirm baud rate of device is the same as
that set in the Powermonitor Software
CONNECTION screen.
4. Incorrect baud rate at the computer Check baud rate in the Powermonitor Software
CONNECTION screen is the same as baud rate of
the Powermonitor.
5. Baud rate for Powermonitor is greater than
modem range. When using a modem interface
between the computer and Powermonitor sites,
the operator must ensure that the
Powermonitor Software is not used to set the
BAUD RATE parameter of any Powermonitor
to a value outside the working range of the
modem being used. Doing so will cause unit to
cease communicating.
Re-establish communications with the
Powermonitor:
Reset the BAUD RATE parameter of the
Powermonitor from its front panel to a value within
the working range of the modem.
Set the Powermonitor Software to communicate at
the same baud rate by setting the BAUD RATE
parameter in the CONNECTION menu.
6. Fault with the computer hardware Test the functionality of the computer’s serial ports.
This is usually sufficient to confirm computer
operation, but may be difficult to determine.
7. Fault with the Powermonitor hardware Connect Powermonitor directly to a portable
computer which is known to work with other
devices. Check that the baud rate and the UNIT ID
set at the computer is the same as the meter.
INVALID VALUE – RE-ENTER Operator attempted to enter a number in a device
configuration screen which is outside the allowable
range of values for the selected parameter. Re-enter a valid number at the prompt, or press
<Esc> to leave the parameter at its present value.