I-7021/22/24, M-7022/24/28 User Manual, Rev: B2.3114M-7022, M-7024, M-7024L, M-7024R, M-7024U, M-70282.31 $AAPNDescription:Sets the communication protocol.Syntax:$AAPN[CHKSUM](CR)$ Delimiter characterAA Address of the module to be set (00 to FF)P Command to set the communication protocolN 0: DCON protocol1: Modbus RTU protocolBefore using this command, the rear slide switchmust be in the INIT position for M-7024U andM-7028, or the INIT * terminal should beconnected to the GND terminal for M-7022,M-7024 and M-7024R, see Section A.1 fordetails. The new protocol is saved in theEEPROM and will be effective after the nextpower on reset.Response:Valid Response: !AA[CHKSUM](CR)Invalid Response: ?AA[CHKSUM](CR)! Delimiter character for a valid response? Delimiter character for an invalid responseAA Address of the responding module (00 to FF)There will be no response if the command syntax isincorrect, there is a communication error, or there is nomodule with the specified address.
