Rockwell-automation 20-COMM-R Remote I/O Adapter Manual de usuario descargar pdf (Pagina 67)

Using Block Transfer Messaging 5-9

20-COMM-R Remote Adapter I/O User Manual

Publication 20COMM-UM004D-EN-P

PLC-5 Controller Example

Block Transfer Data Files for PLC-5 Example Program

The following set of data files shows a read of drive parameter 1 - [Output

Freq]. The value of parameter 1 is 213 (21.3 Hz).

Request Data (BTW) to Read Drive Parameter 1 (Hex)

Response Data (BTR) to Read Drive Parameter 1 (Hex)

The following set of data files shows a write of drive parameter 41 - [Motor

NP Volts]. The value written is 2300 (230.0V AC).

Request Data (BTW) to Write to Drive Parameter 41 (Hex)

Response Data (BTR) to Write to Drive Parameter 41 (Hex)

See Formatting Block Transfer Messages

on page 5-2 for more information

on block transfer messages.

Address Value (hex) Description See Page

N12:0 000A Length of Message = 10 bytes (A hex) 5-3

N12:1 0081 Required Setting 5-3

N12:2 000E Service = Get_Attribute_Single C-1

N12:3 0093 Class = 93 DPI Parameter Object C-5

N12:4 0001 Instance = Parameter 1 (1 hex) C-5

N12:5 0009 Attribute = 09 DPI Parameter Value C-6

Address Value (hex) Description See Page

N13:0 0004 Length of Message = 4 bytes 5-4

N13:1 0000

The Message was Successful 5-4

N13:2 0000

N13:3 00D5 Response Data = 213 (D5 hex) = 21.3 Hz. n/a

Address Value (hex) Description See Page

N12:0 000C Length of Message = 12 bytes (C hex) 5-3

N12:1 0081 Required Setting 5-3

N12:2 0010 Service = Set_Attribute_Single C-1

N12:3 0093 Class = 93 DPI Parameter Object C-5

N12:4 0029 Instance = Parameter 41 (29 hex) C-5

N12:5 0009 Attribute = 09 DPI Parameter Value C-6

N12:6 08FC Data = 2300 (8FC hex) = 230.0V AC n/a

Address Value (hex) Description See Page

N13:0 0002 Length of Message = 2 bytes 5-4

N13:1 0000

The Message was Successful 5-4

N13:2 0000

1 2 ... 62 63 64 65 66 67 68 69 70 71 72 ... 127 128

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Rockwell-automation 20-COMM-R Remote I/O Adapter Manual de usuario Pagina 67