Rockwell-automation 1770-KF2 Data Highway or Highway Plus Interface Mo Manual de usuario descargar pdf (Pagina 135)

Message Packet Formats

Chapter 5

5-56

Write Bytes Physical

Use this command to perform a Download Only after a Download (or

Upload) All Request has been successfully performed.

TNSSTSCMD

SRCDST FNC

1 2

The Physical Address is a 4-byte field

Up to 1

19 data words can be written with a single command (low byte of the word first).

TNSSTSCMD

SRCDST EXT

STS

Byte

Physical Address Bit(s)

A00 -

A07

A08 -

A15

A16 -

A23

A24 -

A31

that contains the address you are writing to:

Command

Format:

Reply Format:

The STS and EXT STS bytes contain status and error code information.

For more information on these bytes, see the “Error Codes” section in this

document.

Word Range Read

This command is a read command whose starting address is either a

logical binary address or a logical ASCII address with up to 51 bytes of

specification. This starting address must point to a word or file.

A special case of this command is the single-word read, where the number

of bytes to read is two bytes.

1 2 ... 130 131 132 133 134 135 136 137 138 139 140 ... 234 235

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Rockwell-automation 1770-KF2 Data Highway or Highway Plus Interface Mo Manual de usuario Pagina 135