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HI 1756-WS WEIGH SCALE MODULE

4-12

Reply data contains 3 fields

• Command (DINT): The command number

• Channel (DINT): The channel number

• Status (DINT): Status information

NOTE: Some commands will produce longer replies.

Zero Command

(ZEROCMD)

The Zero Command requests that the current gross

weight be set to zero.

Command Number: 1 (Hexadecimal)

Channel Number: 0 or 1

Number of Elements: 8

Error Return Values:

• OUTOFTOLERANCE - the current weight

value is beyond the limits set by the zero toler

ance parameter.

NOTE: The amount of weight zeroed off is cumulative. The

Autozero command will fail if the current gross weight

plus any previously zeroed amount exceeds the zero

tolerance value.

• “STATUSWORD” - the command failed

because either the weight was not stable (in

motion) or there was some kind of A/D error.

Tare Command

(TARECMD)

The Tare Command requests the current net weight be

set to zero.

Command Number: 2 (Hexadecimal)