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Page 25

Serial Port Communication

Software Interface

This section introduces the serial communication. The default serial port configuration is baud rate of 9600, 8

data bits, no parity bit, and 1 stop bit. It is important to match the serial port configuration between EM3000

and the Host. Both EM3000 and Host can initiate communication.

Here are some conventions used in this section:

0xHH

A hexadecimal number. For example, 0xAB and 0x1234 are

hexadecimal values of 171 and 4660, respectively.

<xxx>

ASCII control character. For example, <ACK> and <NAK> means

ASCII control characters, 0x06 and 0x15, respectively.

“…” or ‘…’

ASCII String. For example, “AUTO-ID” and ‘AUTO-ID’

means same ASCII string, AUTO-ID.

EM3000 Initiated Data Upload

EM3000 initiates communication only to send system information on power on, when

enabled, and barcode messages. No reply from Host is expected.

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Newland EM3000 Spezifikationen Seite 34