GFK-0467K 4-1
Series 90-30/20/Micro Instructions Set
Programming consists of creating an application program for a PLC. Because the Series 90-30,
90-20, and Series 90 Micro PLCs have a common instruction set, all three can be programmed
using this software. This chapter describes the programming instructions that may be used to create
ladder logic programs for the Series 90-30 and Series 90-20 programmable controllers.
If Logicmaster 90-30/20/Micro programming software is not yet installed, please refer to the
Programming Software User’s Manual, GFK-0466, for instructions. The user’s manual explains
how to create, transfer, edit, and print programs.
Configuration is the process of assigning logical addresses, as well as other characteristics, to the
hardware modules in the system. It may be done either before or after programming, using the
configuration software or Hand-Held Programmer; however, it is recommended that configuration
be done first. If that has not been done, you should refer to the Programming Software User’s
Manual, GFK-0466, to decide whether it is best to begin programming at this time.
This chapter contains the following sections:
Section Title Description Page
1Relay Functions Describes contacts, coils, and links. 4-2
2Timers and
Counters Describes on-delay and stopwatch-type timers, up counters,
and down counters. 4-9
3Math Functions Describes addition, subtraction, multiplication, division,
modulo division, square root, trigonometric functions,
logarithmic/exponential functions, and radian conversion.
Note that trigonometric functions, logarithmic/exponential
functions, and radian conversion functions are only
available with the 350 and 360 series of CPUs.
4-26
4Relational Functions Describes how to compare two numbers for equality, non-
equality, greater than, greater than or equal to, less than,
and less than or equal to.
4-41
5Bit Operation
Functions Describes how to perform comparison and move operations
on bit strings. 4-47
6Data Move Functions Describes basic data move capabilities. 4-69
7Table Functions Describes how to use table functions to enter values into
and copy values out of a table. 4-86
8Conversion
Functions Describes how to convert a data item from one number type
to another. 4-94
9Control Functions Describes how to limit program execution and alter the way
the CPU executes the application program by using the
control functions.
4-107
4
Chapter