Program limits information, Plc block transfer instruction data, Message operation – Rockwell Automation 1336T Function Block Prog. Manual, Series A/B User Manual
Page 131: Example, Scheduled task interval (ms)
5–15
Block Transfer Services
1336 FORCE — 5.9 August 1995
The Scheduled Task Interval (mS) message allows you to determine
the task interval used when executing your application.
PLC Block Transfer Instruction Data
BTW Instruction Length:
3 Words
BTR Instruction Length:
4 Words
0
Header
Word 1
Header
Word 1
16384
PLC Decimal Value
20
16384
Message Structure
Header
Word 2
Data
Word 3
Header
Word 2
Header
Word 3
Data
Word 4
0
PLC Request –– Block Transfer Write
Drive Response –– Block Transfer Read
3840
Dec
Dec
Dec
Dec
3840 –– Message OK
–28928 –– Message Error
Message Operation
The Scheduled Task Interval (mS) message returns the task interval
used when executing your application. The task interval is given in
milliseconds. Currently, this value is always 20 milliseconds.
Example
In this example, the drive returns 20
Dec
for the task interval.
1
0
N10:10
2
3
4
5
6
7
8
9
N10:90
BTW
Data File
BTR
Data File
Data Format
16384
16384
20
0
0
3840
3840
Program Limits
Information:
Scheduled Task Interval (mS)