Digi 9XCite-PKG Manuel télécharger pdf (Page 23)

9XCite‐PKG‐R™RS‐232/485RFModem–ProductManualv2.1[2007.01.04]

©2007MaxStream,Inc. 23

4.5. Command Descriptions

Commands and parameters are listed alphabetically. Parameter types and categories are desig-

nated between "< >" symbols. For example: <AT Command: Networking>. "AT Command" is the

command/parameter type and "Networking" is the command/parameter category.

AT (Guard Time After) Parameter

<Non-AT Settable Parameter: AT Command Options> AT Parameter is used to set the DI pin silent

time that follows the command sequence character (CC Parameter). By default, 1 half of a second

(500 milliseconds) must elapse before entering another character. The AT Command Mode

Sequence used to enter AT Command Mode is as follows:

"No characters sent for 1 millisecond [BT (Guard Time Before) Parameter]

"Send three plus characters "+++" [CC (Command Sequence Character) Parameter]

"No characters sent for 1 millisecond [AT (Guard Time After) Parameter]

All of the values in this sequence can be adjusted. AT Parameter is used to adjust the period of

silence that follows the command sequence character.

Parameter Range: 0x02 - 0xFFFF (x 1 millisecond)

# of bytes returned: 2

Default Parameter Value: 0x1F4 (500 decimal)

Related Commands: BT (Guard Time Before), CC (Commands Sequence Character)

BD (Interface Data Rate) Parameter

<Non-AT Settable Parameter: Serial Interfacing>

BD Parameter allows the user to adjust the UART

baud rate and thus modify the rate at which serial

data is sent to the modem. Baud rates range from

1200 to 57600 baud (bps). The new baud rate

does not take effect until CN (Exit AT Command

Mode) Command is issued.

Note: If the serial data baud rate is set to exceed

the fixed RF data baud rate of the XCite radio

modem, flow control may need to be imple-

mented.

BI (Number of Bits) Parameter

<Non-AT Settable Parameter: Serial Interfacing>

BI Parameter allows the user to define the num-

ber of data bits between the start and stop bits.

Setting 7 bits and Mark or Space parity (NB

Parameter) will result in a setting of 7 bits and no

parity.

Parameter Ranges: 0 - 6

Parameter Configuration (bps)

0 1200

1 2400

2 4800

3 9600

4 19200

5 38400

6 57600

Default Parameter Value: Set to equal radio

modem's fixed RF data rate (baud)

Number of bytes returned: 1

Parameter Ranges: 0 - 1

Parameter Configuration

07 bits

18 bits

Default Parameter Value: 1

Number of bytes returned: 1

1 2 ... 18 19 20 21 22 23 24 25 26 27 28 ... 38 39

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Digi 9XCite-PKG Manuel Page 23

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Produits connexes et manuels pour Modems à radiofréquence (RF) Digi 9XCite-PKG