Output Parameters - Allen-Bradley MicroLogix 1100 Instruction Set Reference Manual

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Output Parameters

Output Parameter Descriptions Address
CV - Control Variable
CVP - Control Variable Percent
SPV - Scaled Process Variable
Control Variable Low Limit (CVL)
Output Parameter Address
Descriptions
CVL - Control PD10:0.CVL
Variable Low Limit
When the output limit bit (PD10:0/OL) is enabled (1), the CVL (Control
Value Low) you enter is the minimum output (in percent) that the Control
Variable attains. If the calculated CV is below the minimum value, the CV
is set (overridden) to the CVL value you entered and the lower limit alarm
bit (LL) is set.
When the output limit bit (PD10:0/OL) is disabled (0), the CVL value you
enter determines when the lower limit alarm bit (LL) is set. If CV is below
the minimum value, the output is not overridden and the lower limit
alarm bit (LL) is set.
The table below shows the output parameter addresses, data formats, and
types of user program access. See the indicated pages for descriptions of
each parameter.
Data Format Range
User-defined word (INT)
PD10:0.CVP word (INT)
PD10:0.SPV word (INT)
Control Variable (CV)
Output Parameter Address
Descriptions
CV - Control Variable User-defined
The CV (Control Variable) is user-defined. See the ladder rung below.
0000
Data Range
Format
word 0 to 100%
(INT)
Type User Program
Access
0 to 16,383 control read/write
0 to 100 control read/write
0 to 16383 status read only
Data Range
Format
word (INT) 0 to 16,383
PID PID
PID
PID File
Process Variable
Control Variable
Setup Screen
Publication 1763-RM001C-EN-P - October 2009
Process Control Instruction 287
Type User Program
Access
control read/write
For More
Information
287
288
288
Type User Program
Access
control read/write
PD10:0
N7:0
N7:1