User Manual

URFI HOST PROGRAMMING

Universal RF Interrogator ? Host Programming Guide Page 14

AMCO Automated Systems

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P/N 52845G125 Rev 1 FEB 2004

URFI Commands

The following tables detail the URFI commands and responses.

Purpose Command Response

Power-Up {DTR (Pin 4)=logic1} {CTS (Pin 8)=logic1} URF> (~ 0.25 sec)

Power-Down {DTR line=logic0} {CTS=logic0}

Stand-By SB {ignore all commands except WU[<id>]<cr>}

Wake-Up WU[<id>] <id><cr><lf>URF>

Where: <id> is the 5 digit Serial Number of the URFI. If none is supplied any unit will respond.

Check-Summing CS<+|-> {no reply, enable or disable checksums}

Update EEPROM UE {no reply, save current options as defaults}

The nn last used in SPnn, SOnn, and G+,nn and F1 and F2become the power-up defaults.

Read Meter RM[<sn>][,T][,F<1|2>]

or R<N|B|C<ch>|A|J>

Where:

T = Send Clear Tamper with command. (if no <sn> use previous <sn>)

F1 or F2 = use Frequency 1 or 2 (if no F use F1 at power on then last one sent)

T = Tamper followed by either S = Short, O = Open or B = Both.

C = Corrupted followed by S = Serial Number, R = Reading, or B = Both.

<ss> = The received Signal Strength (>1.0v is usually good but 2.5 is a glitch)

<bat> = Battery voltage during the Interrogation. ( 9 Volts =to low to transmitt)

Or if no valid reading could be found, one of the following error messages will be sent:

R = Reply: N = None (no data lock), B = Bad (bad BCH), A = Aborted (batt<9V or Tx>4W)

RC<ch> =Data lock found on Channel <ch> (but not on the current channel), where:

<ch> =-25 to +15 (0=415 MHz in 100KHz steps) (see LC command)

(NOTE: only time to scan the current RcvCh+/-10 Channels)

RJ = Receiver Jammed, data lock found before interrogation started, read aborted.

Read SN RS[<sn>][,T][,F<1|2>]

<8 SN digits>,V<ver>,<type>,<ss>,<bat>

or R<N|B|C<ch>|A|J>

Where:

If no <sn> uses the last SN or “?” is assumed. The other items are the same as in RM.

<ver> = one digit F/W version.

<type> = G for Gas, W for Water or E for Electric meter

<ss> = Signal Strength

<bat> =Battery voltage during transmit.

R = Reply: N = None, B = Bad, C<ch> = try Channel <ch>, A = Aborted, J = Jammed.