Rockwell Automation 1336T Function Block Prog. Manual, Series A/B - Manual (Page 142)

5–26 Block Transfer Services
1336 FORCE — 5.9 August 1995
The Read Single Event message reads the block type number and
block ID number for the requested execution number within the
drive’s execution list.
PLC Block Transfer Instruction Data
BTW Instruction Length: 3 Words
BTR Instruction Length: 4 Words
Header
Word 1
PLC Hex Value
0F00
Message Structure
Header
Word 2
Header
Word 3
Header Word 1
Header Word 2
Header Word 3
0
Data
Word 4
0
PLC Decimal Value
0F00 –– Message OK
8XXX –– Message Error
Block ID
Number
Block Type
Number
XX 40
40XX
High Byte Low Byte
Drive Response –– Block Transfer Read
PLC Request –– Block Transfer Write
where:
XX = the function block’s
execution number
XX 40
40XX
High Byte Low Byte
Message Operation
PLC Request
–– The low byte of Word 3 (indicated by XX in the
message structure) represents the function block’s execution number
in the execution list.
Drive Response
–– The drive response contains the block ID number
in the high byte of Word 4 and the block type number in the low byte
of Word 4 as shown in the execution list.
Application Control
Commands:
Read Single Event