A meter comprising: a metrology module configured to collect values in one or more registers; and a communications module configured to: receive a command in a radio frequency "RF" message; determine whether or not the command is valid, wherein determining whether the command is valid comprises: comparing a hash of the command to a valid hash result; or decrypting the command; determine whether the command is a replay; in response to determining that the command is not a replay: obtain the values from the one or more registers; store the values in a log; reset the values in the one or more registers; and transmit an RF response message that includes the values, wherein storing the values in the log is done prior to transmission of the RF response message; and in response to determining that the command is valid and that the command is a replay: retrieve previously stored values, obtained from the one or more registers, from the log; and transmit an RF response message that includes the previously stored values. a metrology module configured to collect values in one or more registers; and a communications module configured to: receive a command in a radio frequency "RF" message; determine whether or not the command is valid, wherein determining whether the command is valid comprises: comparing a hash of the command to a valid hash result; or decrypting the command; determine whether the command is a replay; in response to determining that the command is not a replay: obtain the values from the one or more registers; store the values in a log; reset the values in the one or more registers; and transmit an RF response message that includes the values, wherein storing the values in the log is done prior to transmission of the RF response message; and in response to determining that the command is valid and that the command is a replay: retrieve previously stored values, obtained from the one or more registers, from the log; and transmit an RF response message that includes the previously stored values. receive a command in a radio frequency "RF" message; determine whether or not the command is valid, wherein determining whether the command is valid comprises: comparing a hash of the command to a valid hash result; or decrypting the command; comparing a hash of the command to a valid hash result; or decrypting the command; determine whether the command is a replay; in response to determining that the command is not a replay: obtain the values from the one or more registers; store the values in a log; reset the values in the one or more registers; and transmit an RF response message that includes the values, wherein storing the values in the log is done prior to transmission of the RF response message; and obtain the values from the one or more registers; store the values in a log; reset the values in the one or more registers; and transmit an RF response message that includes the values, wherein storing the values in the log is done prior to transmission of the RF response message; and in response to determining that the command is valid and that the command is a replay: retrieve previously stored values, obtained from the one or more registers, from the log; and transmit an RF response message that includes the previously stored values. retrieve previously stored values, obtained from the one or more registers, from the log; and transmit an RF response message that includes the previously stored values.