Rockwell Automation 1770, D17706.5.16 Ref Mnl DF1 Protocol Command - Manual (Page 111)

7–24 Communication Commands
Publication 1770Ć6.5.16 - October 1996
return edit resource
Returns the edit resource (sole access) of the processor when editing
is completed. When you return the edit resource, the programming
device can be written to or modified.
CMD
0F
STS
FNC
12H
TNS C
CMD
4F
STS TNS R
DST SRC
LNH
HI
DST
EXT
STS
PSN PSN
LNH
LO
PSN SRC PSN
LNH - length of the optional portion of the reply packet in bytes.
First four words of return edit resource
The first four words are currently unused and unexamined.
To assure compatibility with any future use of these bytes, they
should be initialized to 0. DST, PSN, and SRC are included for
reference only.
For this processor This access is cleared by
SLC 5/00, SLC 5/01, SLC 5/02 any node sending this command
SLC 5/03, SLC 5/04
the programming device or via a timed mechanism
internal to the processor sending this command
set data table size
Sets the data table size for the PLC-2 processor. Use this command
immediately before any physical writes on the PLC-2 processor.
The enter download mode command must precede this command.
C
CMD
06
STS
FNC
08
TNS DATA
R
CMD
46
STS TNS
DST SRC
SRC DST
DATA - enter the number of bytes of memory that you want to allocate to the PLCĆ2
data table. Since PLC words are two bytes long, the DATA value is double the
number of words in the PLCĆ2 data table.
If t 512 bytes, the number must be a multiple of 4.
If w 512 bytes the number must be a multiple of 128.
DATA is also equivalent to the physical address of the start of the processor's
program memory. To determine allowable data table sizes, see the appropriate
programming manual
Important: Using a data table size that is larger than the processor’s
available memory causes a PLC-2 fault the next time
the processor is put into Run or Remote Run mode.
• PLCĆ5
• PLCĆ5/VME
• SLC 500
• SLC 5/03
• SLC 5/04
"
• PLCĆ2