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Allen-Bradley 1203-GD1 - Parameter Value Write

Allen-Bradley 1203-GD1
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B4 Supported Block Transfer Messages
Parameter Value Write
Parameter Value Write writes a 16-bit parameter data value to the
selected parameter number.
PLC Block Transfer Instruction Data
PLC request instruction length: 4 word
Drive response instruction length: 4 words
Figure B.4 Message Structure
Message Operation
Parameter Value Write sends a new value to the specified
parameter. The value must be in device units. Units for each
parameter are listed in the device manual.
If an error has occurred, word 1 of the response returns a value of
31999, and word 3 contains a status code.
Example
In this example, a value of 4096 was sent to Parameter 20. 4096 is in
drive units and indicates a value of 100% Drive Rated Volts, as
defined in P147, Drive Rated Volts.
Data File Format
For parameter values greater than 32,767, you may need to enter the value in hexadecimal.
* Example only These values vary depending on parameters and products.
Header Word 1
Data Word 2
PLC Request
Message Length
PLC Decimal Value
31999
Parameter Number
Drive Response
4
Data Word 3
Parameter Data
Header
Word 0
Header
Word 1
Data
Word 2
Message Length
PLC Decimal Value
769 Message OK
31999 Message Error
Parameter Number
4
Data
Word 3
0 or Error Code
Header Word 0
0123456789
PLC request 4 31999 20* 4096*
Drive response 4 769 20* 0*
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