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SECTION 5 Communications 1:N Protocol Command Antenna designation Communi- Process Command cations designcode designation ation Controller No. Fixed SOH value @ 0 1 1 × × M D × 2 2 × 2 C/K 1/2 1 1 × × ... No. of check block bytes Check block start address UID × × × × 0 or 16 × × 4 × × FCS × 2 × 2 Terminator * CR 2 SECTION 5 V680 Commands Communications designation Specifies the method of communications with the Tag. Refer to Communications Designation Function for details on the communications designation. p. 87 Process designation Specifies the check process. “C”: Check code verification “K”: Check code calculation Antenna designation Specifies the Antenna with which to communicate. “1”: Antenna 1 “2”: Antenna 2 UID A unique identifier used to identify Tags. Added only for the selective communications designation (SL). Check block start address Specifies the start address of the check block in 4-digit hexadecimal. Setting range: 0000H to FFFDH No. of check block bytes Specifies the number of bytes in the check block in 2-digit hexadecimal. Setting range: 00H, 03H to FFH (Specify 00H for 256 bytes.) Specify the number of bytes in the check code calculation area plus two for the number of check block bytes. Refer to Tag Memory Error Correction for details. p. 80 Response Antenna Resend flag desigFixed Controller No.Command SOH value code End code nation @ 1 × × 0 M 2 2 1 D × × 2 × 0 1 1 × × FCS UID ... 0 or 16 × × × × 2 Terminator * CR 2 Note: When using the multi-access trigger communications designation (MT), the ID controller returns an end code of 03 after communicating with all Tags. End code Indicates the execution result for the command. 00: Normal end, Data normal (only when verification is performed) 76: Data error warning (only when verification is performed) Refer to List of End Codes for information on other end codes. p.155 UID A unique identifier used to identify Tags. Added only for multi-access communications designations (MT/MR). Refer to Tag Memory Error Correction for details on memory checks. p. 80 110 RFID System User’s Manual
