Rockwell Automation 1336T Function Block Prog. Manual, Series A/B - Manual (Page 147)

5–31 Block Transfer Services
1336 FORCE — 5.9 August 1995
The Read Block Value message reads the 16–bit parameter data value
for the specified function block. This returns all node values for one
block.
PLC Block Transfer Instruction Data
BTW Instruction Length: 3 Words
BTR Instruction Length: 36 Words
0
Header
Word 1
Header
Word 1
80ID
0F05
80ID
Parameter Number
Message Structure
Header
Word 2
Data
Word 3
Header
Word 2
Header
Word 3
0
PLC Request –– Block Transfer Write
Drive Response –– Block Transfer Read
Packet Number 0
Data
Word 4
Node 0 Value
Node 1 Value
Data
Word 5
Data
Word 6
•
Node 31 Value
Data
Word 36
•
•
•••
PLC Decimal Value
0F05 ––Message OK
8F05 –– Message Error
ID = block ID number
Message Operation
The Read Block Value function specified in the BTW reads the
specified function block values from the drive and places the values
(or an error code) in words 5 through 36 of the BTR data file. If an
error has occurred, word 2 of the BTR is 8F05
Hex
and word 4
contains the status code.
Node Adjustment:
Read Block Value