Rockwell Automation 1336T Function Block Prog. Manual, Series A/B - Manual (Page 128)

5–12 Block Transfer Services
1336 FORCE — 5.9 August 1995
The Fault Status Read message reads the fault code information from
the drive when a fault is associated with the function block program.
A function block fault is indicated by Task Status of FF
Hex
. To get
the Task Status, use the Read Task Status block transfer routine.
PLC Block Transfer Instruction Data
BTW Instruction Length: 3 Words
BTR Instruction Length: 5 Words
Header
Word 1
PLC Decimal Value
3845
0
Message Structure
Header
Word 2
Header
Word 3
PLC Request –– Block Transfer Write
Header Word 1
Header Word 2
Header Word 3
PLC Decimal Value
3845 –– Message OK
0
–28923 –– Message Error
0
Data
Word 4
Fault Code
Data
Word 5
Code Identifier
0
Drive Response –– Block Transfer Read
Message Operation
Word 4 is the actual (bit encoded) value of the function block fault
status register. You should use this word mainly as a fault flag
during download and compile operations.
The following values are currently valid for Word 4:
Word Value Bit Number Definition
2 1 A link processing error occurred.
4 2 An I/O node limit error occurred.
8 3 A memory allocation error occurred.
32 5 A block number limit error occurred.
128 7 A BRAM checksum error occurred.
256 8
A packet number error occurred because a packet
number was out of range.
1024 10
An event number error occurred. The same ID
number was used with a different block type.
Application Status
Services:
Fault Status Read