TransCore AI1401, Руководство пользователя

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A-3
Appendix A
Firmware Command Groups and
Parameters
This chapter discusses the firmware command codes, which allow the
user to configure the reader for communications with a personal
computer (PC) or other host computer.
Command Syntax
Command codes enable you to use the features of the AI1401 Reader and to develop
host computer programs for controlling the functions of the AI1401 Reader.
The general syntax of all commands begins with an exclamation character (
!
) fol-
lowed by the command code and a list of parameters. No spaces exist between charac-
ters, and the command is terminated with
Enter or a carriage return <CR> .
As characters are sent to the AI1401 Reader they are automatically echoed back to the
host. As soon as the command is terminated with
Enter or <CR> , the AI1401 Reader
responds to the command with one of the following responses:
!Done
— if the command is recognized and accepted
!Error
— if it is not recognized
The most typical response is
!Done
. Other responses are indicated as part of the com-
mand descriptions.
Factory default value commands are shown in bold followed by (factory setting) .
Command Groups
Reader commands are divided by primary function into eight groups. Following is a
list of the eight command groups:
•
Group 1 — Communication Port Control
•
Group 2 — Real-Time Clock
•
Group 3 — ID Data Format
•
Group 4 — This command group not used by AI1401 Reader
•
Group 5 — This command group not used by AI1401 Reader
•
Group 6 — Interrogator Control