Pni Legacy Comm Board Manual de usuario descargar pdf (Pagina 10)

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Page 10 of 42

Command Line Interface

The Command Line interface allows you to use a simple terminal program to communicate with the

CommBoard. The Command Line interface also allows applications written in any language, including

Assembly, Basic, or C to communicate with the CommBoard via the RS-232 or RS-485.

Command Sequence

The sequence of command line events is:

1. Type in the command on the terminal program:

cmd?<es>

2. The module processes the command.

3. A reply is sent back to you.

a. If no error

$cmdreply*<dcs><es>

b. If error

$cmdreply:Exxx*<dcs><es>

Table 11: Command Notation Table

Command

Symbol

Response

Symbol

Description

? Indicated query only command or variable

= Indicates assign only command or variable

<aq>

Use ? for query or =<val> for assign

<es>

Ending sequence <cr> or <lf> or <cr><lf>

$ Start of checksum data

! RS-485 address follows

If error occurs; :Ennn

* End of checksum data

<dcs> Checksum

<er> Start of data

n n Usually a lower case ‘n’ will represent a digit (0-9)

n.n n.n Represents a decimal value (positive or negative)

x x Usually a lower case ‘x’ will represent a hex digit (0-F)

xx xx Represents a Uint8

xxxx xxxx Represents a Uint16

xxxxxxxx xxxxxxxx Represents a Uint32

a. XOR checksum method.

CommBoard

Command Line Interface

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