Rockwell-automation 1770-KF2 Data Highway or Highway Plus Interface Mo Instrukcja Użytkownika Pobierz pdf (Strona 129)

Message Packet Formats

Chapter 5

5-50

For example, if you wanted to set the processor to Run mode, your flag

byte would look like this:

Bit 76543210

00000010

Typed Read and Typed Write

Use these commands to:

read data from the processor starting at the PLC-5 system address plus

the packet offset or

write data to the processor starting at the PLC-5 system address plus the

packet offset.

The type of data sent with the Typed Write command must match the file

type being written. It is the responsibility of the host to do data type

conversions.

The format for the Typed Read message is as follows:

TNSSTSCMD

SRCDST FNC

PACKET

OFFSET

TOTAL

TRANS

SIZE

PLC-5 SYSTEM

ADDRESS

Command

Format:

TNSSTSCMD

SRCDST

ype/Data Parameter

Data Bytes —

This can be up to 240 bytes long

(including the size of the PLC-5 system address).

Reply Format:

1 2 ... 124 125 126 127 128 129 130 131 132 133 134 ... 234 235

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Rockwell-automation 1770-KF2 Data Highway or Highway Plus Interface Mo Instrukcja Użytkownika Strona 129