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5-3 Communication Response Format
(1) Command
A text section of command consists of a command and option section which specifies information. The antenna receives a range from
STX receiving to ETX correctly and, only when the antenna station No. and DA match, executes a command. After receiving STX,
when the antenna receives STX again by the time the antenna receives ETX, the second STX shall be the beginning of the command.
You can specify whether BCC is enabled or disabled. By default, BCC is disabled. How to specify whether BCC is enabled or disabled,
refer to Section 5-9-7.
• Disabling BCC *A value below shows the number of characters.
• Enabling BCC
Name
STX
Shows the beginning of a command response frame. It corresponds to 02h (hexadecimal number)
in the ASCII code table.
DA
Destination (antenna) station number. Operation mode "00" to "31" (initial value is "00"). Setting
mode "99". A station number in the operation mode can be changed in "Station Number Setting".
SA
Source (host device) station number "80" to "89". Several host device can be used. If only one
host device is used, specify "80".
Command Code
Specifies a command for antenna operation. For available command codes, refer to the command
list in Section 5-4.
Option
Specifies the communication of command execution, reading data and writing data. For details,
refer to the formats of commands after Section 5-7.
ETX
Shows the end of command response. It corresponds to 03h (hexadecimal number) in the ASCII
code.
BCC
Block Check Character (referred to as "BCC"). Calculation result of horizontal parity immediately
after STX to ETX. It is displayed in one character. For example of calculation of BCC, refer to the
next page.
(2) Response
A text section of response consists of a command, termination code and data section.
• Disabling BCC *A value below shows the number of characters.
• Enabling BCC
Command code
Command code
Note: "h" is a hexadecimal notation.
Command code Termination code
Command code
Termination code
Option
Option
Description
Data
Data
5-9
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