Physical write, 1774-plc – Rockwell Automation 1770, D17706.5.16 Ref Mnl DF1 Protocol Command User Manual

Page 101

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7–14

Communication Commands

Publication 1770Ć6.5.16 - October 1996

physical write

Downloads data into the PLC data table or program memory.
Use this command to download the contents of a computer file into
PLC memory.

PLC-2
For PLC-2 processors, enter download mode must precede the first
physical write.

C

CMD

03

STS

TNS

ADDR

R

STS

TNS

CMD

43

Data (max. 244 bytes)

DST SRC

SRC DST

1774-PLC

C

CMD

03 STS

TNS

ADDR

R

STS

TNS

CMD

43

Data (max. 244 bytes)

DST SRC

SRC DST

PLC-3
The starting address is a PLC-3 physical address. The destination
interface module accepts this command after the source node has
successfully transmitted a shutdown request.

CMD

0F STS

FNC

08

TNS

C

CMD

4F

STS

TNS

R

TNS

DST SRC

SRC DST

Data (max. 238 bytes

or 119 words)

EXT

STS

The EXT STS field may be attached to the reply packet only when there is an error.

PLCĆ3 phys. address

PLCĆ2

1774ĆPLC

PLCĆ3

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