Kistler-Morse KM STXPlus User Manual

Page 31

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APPENDIX B: KISTLER-MORSE

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PROTOCOL SERIAL COMMANDS

would only be in effect when in digital mode. This would be the A/D counts required in order for
a zero weight to occur. The range of this value can be ±8,388,607. For this example, the master
sets the digital zero counts for an STXplus at address 01 to14865.

Request from Master

Response from STXplus

>aaw3(-)dddddddssr

Ar

Format

>01w31486513r

Ar

Example

‘R4’ Command — Read Digital Zero Weight
This command is sent by the master to request the STXplus to send the zero weight calibration
value which would only be in effect when in digital mode. This would be the weight that was
used to calculate/calibrate a digital zero counts. The range of this value can be ±2,147,483,647.
The default value is 0. For this example, the master requests the digital zero weight for an
STXplus at address 01 assuming a format of 3(X.X), which returns 347.5 engineering units and a
checksum of 01.

Request from Master

Response from STXplus

>aaR4ssr

A(-)fffffffssr Format

>01R4E7r

A347.501r Example

‘w4’ Command — Write Digital Zero Weight
This command is sent by the master to set the zero weight calibration value of an STXplus which
would only be in effect when in digital mode. This would force a re-calibration of the digital zero
counts value based on the A/D counts currently being read applied to the zero weight value
transmitted without changing the delta counts/delta weight slope. The range of this value can be
±2,147,483,647. For this example, the master sets the digital zero weight for an STXplus at
address 01 assuming a format of 2(X.) to14865.

Request from Master

Response from STXplus

>aaw4(-)fffffffssr

Ar

Format

>01w414865.42r

Ar

Example

‘R5’ Command — Read Digital High Span Counts
This command is sent by the master to request the STXplus to send the high span counts
calibration value which would only be in effect when in digital mode. This would be the A/D
counts paired with the digital high span weight that would serve as one point on the calibration
slope line if in 2 point calibration mode. The range of this value can be ±8,388,607. The default
value is 8,388,607. For this example, the master requests the digital high span counts for an
STXplus at address 01 which returns 23475 counts and a checksum of 05.

Request from Master

Response from STXplus

>aaR5ssr

A(-)dddddddssr

Format

>01R5E8r

A2347505r

Example

‘w5’ Command — Write Digital High Span Counts
This command is sent by the master to set the high span counts calibration value of an STXplus

B-12

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