Rockwell Automation 1395 Multi-Comm Hardware/Software User Manual
Page 53

Chapter 3
Configuration & Interfacing
3–42
Read Parameter Full
This function reads the full parameter description from the Drive based on
(Value, Min, Max, Descriptor, Text)
a parameter number provided by the PLC Program. The description
includes the actual value, minimum value, maximum value, descriptor, and
the parameter text.
PLC Block Transfer Data –
BTW Instruction Length: 5
BTR Instruction Length: 25
PLC DH+ Data –
Write
Read
Size In Elements:
5
25
Processor Type:
PLC–5
PLC–5
Destination Address:
N15:0–4
N15:0–24
Message Structure –
Message Header Information:
Word 1: 0
Word 2: 0
Function Code, Word 3: 770
Write Message Length, Word 4: 10 bytes
WORD
0
0
770
10
BTW
BTR
0
0
770
See Note
1
2
3
4
NOTE:
Word 4 of the BTR instruction is broken down into
two bytes. The High byte contains the status bits
per table 3–H. The low byte contains the Drive
message length in bytes.
Parameter #
5
6
Parameter #
Parameter Data
Minimum Value
Maximum Value
•
Parameter Text
Descriptor
Parameter Text
Message Operation – The READ PARAMETER FULL function requests
the Drive to provide the full description of a parameter for use in the PLC
Controller. This information includes the actual value, minimum value,
maximum value, descriptor, and the parameter text.
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