Honeywell user manual SMV 3000 Transmitter User’s Manual 133

11.4 Diagnostic Messages, Continued

Diagnostic Messages,	Table 33	Communication Status Message Table, continued
continued

SMV Status

-

-

-

SCT Status Message	SFC Display Message			TDC Status Message
-	STATUS	TAG	ID.	-
	NACK	RESPONSE
-	TAG NO.			-
	FAILED	COMM	CHK

-	TAG	NO.	-
	HI	RES/LO VOLT

Possible Cause

Transmitter sent a negative response because it could not process one or more commands.

SFC failed a communications diagnostic check. Could be an SFC electronic problem or a faulty or dead communication loop.

Either there is too much resistance in loop (open circuit), voltage is too low, or both.

What to Do

Check configuration and try again.

• Check polarity and try again.
• Press [stat] key and do any
	corrective action required and try
	again.
•	Check communication loop.
•	Replace SFC.
• 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 response from transmitter.
		NO XMTR	RESPONSE		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.

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