A - standard function block parameters, Axxx blocks, Standard function block parameters – Rockwell Automation PLC-5 Fieldbus Solutions for Integrated Architecture User Manual User Manual
Page 181: Appendix, 1) axxx blocks, Table a.1 ack_option table a.2 alarm_hys
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Publication 1757-UM006A-EN-P - May 2002
Appendix
A
Standard Function Block Parameters
(1)
Axxx Blocks
Table A.1 ACK_OPTION
Table A.2 ALARM_HYS
(1)
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Classification
Simple Variable
Description
Selects whether alarms associated with the block will be automatically
acknowledged.
FF Data Type
Bit String
Range
1: Unacknowledge
Usage
C/Contained
Length
2
Valid Views
VIEW_4
Storage
Static
Remarks
Initial value is 0
Classification
Simple Variable
Description
Defines the amount of change a PV value must attain within the alarm limits
before the alarm condition clears.
FF Data Type
Float
Range
0 to 50 percent of PV span
Usage
C/Contained
Length
4
Valid Views
VIEW_4
Storage
Static
Remarks
Initial value is 0.5 percent