1.5 FUNCTION REFERENCE

 

• The following function descriptions are for both the micrologix (500/1000) and PLC-5 processor families.

 

• Note that floating point operations are not available on the micrologix.

 

• Some of the flags referred to functions are:

S2:0/0 carry in math operation

S2:0/1 overflow in math operation

S2:0/2 zero in math operation

S2:0/3 sign in math operation

 

 

GENERAL FUNCTIONS

 

 

 

TIMERS

 

 

 

 

COUNTERS

 

• Counter memory instructions can share the same memory location, so some redundant bits are mentioned here.

 

 

 

 

COMPARE

 

 

 

 

 

CALCULATION

 

 

 

 

 

 

 

LOGICAL

 

 

 

CONVERSION

 

 

MOVE

 

 

 

 

FILE

 

 

DIAGNOSTIC

 

 

SHIFT REGISTER

 

 

 

 

SEQUENCERS

 

 

 

 

PROGRAM CONTROL

 

 

 

PROCESS CONTROL AND MESSAGES

 

 

BLOCK TRANSFER

 

 

ASCII