Parker PDHX-E Series, User Manual

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The conditions take the form of a set of evaluation statements:
1. INnnnnn_nnnnnnnnnn: compare to input status
LMT+ LMT- HOME AUX_IN STOP _
IN1 IN2 IN3 IN4 IN5 IN6 IN7 IN8 IN9 IN10
2. Variable compares:
VARn>VARn
VARn=VARn
VARn<VARn
A constant, POS (the present value of the position counter), ABS (the present value of the
absolute encoder) or FEP (follower encoder position) can be substituted for the variable.
3. AND: Boolean AND operation
4. OR: Boolean OR operation
Example
Command Description
VAR4=4000 Set variable 4 to 4000
IF(IN_10 OR VAR1=3) If input 1 is active and input 2 inactive
or the user variable 1 equals 3 then
execute sequence 1, else execute
sequence 2
XR1 Execute sequence 1
ELSE ELSE command
XR2 Execute sequence 2
NIF End of IF
REPEAT Repeat command
VAR5=POS Set variable 5 to current indexer
position
XR5 Execute sequence 5
T5.0 Delay 5 seconds
H Change direction
UNTIL(VAR5>VAR4 AND IN_00) If inputs 1 and 2 are inactive and
the position counter is greater than
VAR4, execute the next command.
Else, jump to the repeat command
VAR5=POS Set variable 5 to current indexer
position
VAR6=ABS Set variable 6 to the absolute encoder
position
WHILE(VAR6>VAR5 AND IN_00) If the absolute position encoder
is greater than VAR5 and inputs 1 and
2 are inactive, execute the following
commands, else execute the command
following the NWHILE command
XR7 Execute sequence 7
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