Rules for Transactions
Rules for Transactions

Rules for Transactions

This section lists the rules for transactions.
  • Every Transaction is independent of every other Transaction and can only be initiated by the Host computer.
  • A valid Response Packet must be received by the Host computer to complete a Transaction before the next Request Packet is sent.
  • If an error is encountered during a Transaction, the entire Transaction (i.e., Request Packet and Response Packet) must be repeated.
  • The Zebra printer does not provide for system time-outs and has no responsibility for insuring that its Response Packets are received by the Host computer.
  • The Host computer must provide time-outs for all of the Transactions and insure that communication continues.
  • If any part of a Transaction is lost or received incorrectly, it is the responsibility of the Host computer to retry the whole Transaction.