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1/99 SMV 3000 Transmitter User’s Manual 133
11.4 Diagnostic Messages, Continued
Diagnostic Messages,
continued
Table 33 Communication Status Message Table, continued
SMV Status SCT Status Message SFC Display Message TDC Status Message Possible Cause What to Do
--
STATUS TAG ID.
NACK RESPONSE
-
Transmitter sent a negative
response because it could not
process one or more commands.
Check configuration and try again.
--
TAG NO.
FAILED COMM CHK
-
SFC failed a communications
diagnostic check. Could be an
SFC electronic problem or a
faulty or dead communication
loop.
• Check polarity and try again.
• Press [stat] key and do any
corrective action required and try
again.
• Check communication loop.
• Replace SFC.
--
TAG NO.
HI RES/LO VOLT
-
Either there is too much
resistance in loop (open circuit),
voltage is too low, or both.
• Check polarity, wiring, and
power supply. There must be 11
volts minimum at transmitter to
permit operation.
• Check for defective or
misapplied capacitive or
inductive devices (filters).
--
TAG NO.
NO XMTR RESPONSE
-
No response from transmitter.
Could be transmitter or loop
failure.
• Try communicating again.
• Check that transmitter’s loop
integrity has been maintained,
that SCT or SFC is connected
properly, and that loop
resistance is at least 250Ω.
SCT – Select Tag ID from the View
pull down menu.
SFC – Press [
ID] key and do any
corrective action required and try
again.