Rockwell Automation 1770, D17706.5.16 Ref Mnl DF1 Protocol Command - Manual (Page 105)

7–18 Communication Commands
Publication 1770Ć6.5.16 - October 1996
protected typed logical write with three address fields
Writes data to a logical address in a SLC processor.
CMD
0F
STS
FNC
AA
TNS DST SRC
Ele.
No.
File
Type
C
Byte
Size
File
No.
S/Ele.
No.
DATA
CMD
4F STS
SRC DST R
EXT
STS
The EXT STS field is only included if there is an error.
TNS
Field Description
Byte Size
The size of data to be read (in bytes), not including the address fields
or other overhead bytes.
File Number
Addresses files 0Ć254 only. For higher addresses, setting this byte to
FF expands this field to three bytes total. Use the second and third
bytes for the expanded file address (low address byte first).
File Type
Use one of the these values for this field. Do not use any other
values; doing so may result in unpredictable results.
• 80Ć83 hex: reserved
• 84 hex: status
• 85 hex: bit
• 86 hex: timer
• 87 hex: counter
• 88 hex: control
• 89 hex: integer
• 8A hex: floating point
• 8D hex: string
• 8E hex: ASCII
Element Number
Addresses elements 0Ć254 only. For higher addresses, setting this
byte to FF expands this field to three bytes. Use the second and third
bytes for the expanded element address (low address byte first).
SubĆelement
Number
Addresses subĆelements 0Ć254 only. For higher addresses, setting
this byte to FF expands this field to three bytes. Use the second and
third bytes for the expanded subĆelement address (low address byte
first).
DATA
• For SLC 5/01 or SLC 5/02
= 82 bytes (41 words)
• For SLC 5/03 or 5/04
= 223 bytes with IP (does not apply to DF1 drivers)
= 234 bytes without IP (applies to DF1 drivers)
• SLC 500
• SLC 5/03
• SLC 5/04