BECKWITH ELECTRIC BlueJay M-2911 Manuel - Page 4

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M-2911 BlueJay Universal Data Transceiver

Configuration

The M-2911 is configurable with the following parameters:

• Unit (Transmit/Receive) Address: 1 to 250

• Destination (Transmit): 1 to 255

• Multicast (Receive) Address: 251 to 254

• Baud Rate: Selectable from 2400 to 115,200

• Parity: Even/Odd/No Parity

• Transmit Retry: 0 to 9 times

• Interface: RS-232/RS-422/RS-485

• RS-232 RTS/CTS: FIXED/AUTO/FLOW-THRU

• RS-422/485 Tx:

Gating: 0 to 10 characters

Lead Time: 0 to 10 mS

Hold Time: 0 to 10 mS

• Intercharacter Timeout: 1 to 10 character times/1 to 100 mS

• Maximum Packet Size: 1 to 60 characters

Configuring the M-2911

To configure the M-2911, the unit must be put in the AT-Command Mode. To put the unit in AT-Command

Mode:

Connect the unit (using an RS-232 cable) to a PC or laptop computer running a terminal emulator

program (such as Microsoft HyperTerminal) set to 9600 bps, No Parity, One Stop Bit.

Apply power to the unit.

After 1–2 seconds, type "+++", and pause for 1 second or more. The M-2911 will enter

AT-Command Mode and respond with "OK". The user can then enter any of the AT Commands

listed below.

■ NOTE: After each command, the unit will return "OK" if the command was valid, or "???" if invalid or out-

of-range.

AT Commands

Unit (Transmit/Receive) Address Configuration: ATS=nnn<ENTER>, where nnn is 1 to 250

Destination (Transmit) Address Configuration: ATD=nnn<ENTER>, where nnn is 1 to 255

Multicast (Receive) Address Configuration: ATM=nnn<ENTER>, where nnn is 251 to 254

Baud Rate Select: ATB=nnnnnn<ENTER>, where nnnnnn is 2400, 4800, 9600, 19200, 38400, 76800, or

115200

Parity Select: ATP=x, where x is E for Even Parity, O for Odd Parity, or N for No Parity

Transmit Retries Configuration: ATR=n<ENTER>, where nn is 0 to 9

Interface Selection: RS-232, RS-422, or RS-485

ATI=RS232<ENTER>

ATI=RS422<ENTER>

ATI=RS485<ENTER>

RS-232 RST Configuration:

ATI=RTSx<ENTER>, where x is 0 for Low, 1 for High, F for Flow-Thru

ATI=CTSx<ENTER>, where x is 0 for Ignore, 1 for Obey, F for Flow-Thru

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