PSC Magellan 8500 Service Manual download pdf (Page 68)

METTLER TOLEDO

DIVA Service Manual 62

6.1.11.4 Command Flow

ECR Scale COMMENTS

ENQ (05h)

ACK (06h)

Data Available.

Errors could be:

CAN - repeat weighing

NAK - no acknowledgement

NUL - no data available

DC1 (11h)

Data Request

Errors could be:

NAK – no acknowledgement

STX ID W5W4W3W2W1 BCC ETX Transmitted Data

STX ID W5W4W3W2W1 BCC ETX

Confirm Data

Errors could be:

ACK – Data not confirmed

NAK – receive error or scale

error detected.

CR (0dh)

Data confirmed, CAN response to

ENQ is activated until current

transaction is cleared.

Note: The POS can request and receive additional weight data from the scale before returning

the verification weight but the verification weight must equal the last weight sent by the scale.

Note: Spaces depicted in the description above are only used for ease of reading. No space

characters are used unless the BCC result yields the space character.

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PSC Magellan 8500 Service Manual Page 68