This section provides descriptions for the data block fields.
STX (Start of Text)
The Zebra printer sends this character as the beginning of the variable length Data Format portion of the Response Packet. The ASCII Control Code character STX (02H) is used as the Start of Text Character.
DATA FORMAT (Label Information)
The ‘variable length’ portion of the Response Packet. If the Packet Type field in the Response Header contains an ‘A’ or an ‘N’, no data will appear in this field. If the Packet Type field contains an ‘S‘, this field will contain the Printer Status Message.
ETX (End of Text)
The Zebra printer sends this character as the end of the variable length Data Format portion of the Request Packet. The ASCII Control Code character ETX (03H) is used as the End of Text Character.
CRC (Cyclic Redundancy Check)
This is the CRC of the Response Packet as calculated by the Zebra printer. This Cyclic Redundancy Check maintains the validity and integrity of the information transmitted between the Zebra printer and the Host computer.
This CRC is a two Byte value derived from the contents of the packet between, but not including, the SOH character and the CRC code itself. The Host computer will calculate a CRC of the received Response Packet and compare it to the CRC value in this field. The CRC of the Response Packet must match the CRC calculated by the Host computer in order for the Response Packet to be valid.
EOT (End of Transmission)
The Zebra printer sends this character as the end of the Response Packet. The ASCII Control Code character EOT (04H) is used as the End of Transmission Character.
