Lantronix 900-691-R manual Example Data Capture on a Serial Device, Initialization

11: Monitor

Example: Data Capture on a Serial Device

Connect the xPico Wi-Fi serial port to a serial device, then query and capture desired information periodically, presenting this information on a Web page.

Sample Configuration

Connect to the Command Line Interface (CLI) on the EDS2100. The CLI has menu levels, so we will send commands to exit through multiple levels, knowing that an exit at the top level will just return us to the top level. Then we can enter the "enable" command level.

Use a null modem cable to connect xPico Wi-Fi unit Line 1 to a Lantronix EDS2100 Line 1.

Set both devices to 115200 bits per second, no parity, 8 data bits, 1 stop bit, hardware flow control.

Set the first three message Commands to send "exit[0x0d]", the fourth "enable[0x0d]"

Initialization

Upon xPico Wi-Fi power-up, the state of the external serial device is not known. Monitor will send one or more messages to bring the serial device into a known state.

STEP 1 - STRATEGY Figure 11-7 Monitor Initialization

Explore your serial device and determine your strategy for bringing it to the desired starting state.

STEP 2 - CONNECTION

Connect your serial device to your xPico Wi-Fi unit.

STEP 3 - LINE SETTINGS

Set serial line speed, flow control, and character options on both devices so they are compatible. On xPico Wi-Fi unit, select "Monitor" under Line Protocol.

STEP 4 - MONITOR INITIALIZATION

Use Monitor Explorer or directly configure settings in Monitor Initialization Configuration. In Figure 11-7 Monitor Initializationthe example configuration is typed into the Monitor Explorer web page.

Note: Non-printable characters are placed in the Command within square brackets. The "Enter" key on your PC is an ASCII Carriage Return, code 0x0d.

Note: After each message Command is sent, the Monitor may wait for a response. You may set the Timeout for each message. If the Timeout is too short, your device may become out of sync with Monitor. So make your timeout comfortably high, and then if applicable define an End Character or Length so it will move on without waiting further.

xPico® Wi-Fi® Embedded Device Server User Guide 60