Ir Area; Input And Output Areas; Work Areas; I/O Allocation - Omron CQM1H - PROGRAM Programming Manual

IR Area

3-2

IR Area

3-2-1

Input and Output Areas

3-2-2

Work Areas

3-2-3

I/O Allocation

148
The functions of the IR area are explained below.
IR area bits are allocated to terminals on I/O Output Units and Dedicated I/O
Units. They reflect the ON/OFF status of input and output signals. Input bits
begin at IR 00000, and output bits begin at IR 10000. With the CQM1H, only
IR 00000 through IR 01515 can be used as input bits and only IR 10000
through IR 11515 can be used as output bits.
Note Input bits cannot be used in output instructions. Do not use the same output
bit in more than one OUT and/or OUT NOT instruction, or the program will not
execute properly.
The work bits can be used freely within the program. They can only be used
within the program, however, and not for direct external I/O. Work bits are
reset (i.e., turned OFF) when the CQM1H power supply is turned OFF or
when operation begins or stops. The following table shows the parts of the IR
area that have been set aside for use as work areas.
Words
IR 016 to IR 089 (74 words)
IR 116 to IR 189 (74 words)
IR 216 to IR 219 (4 words)
IR 224 to IR 229 (6 words)
The bits in the ranges shown below have specific functions, but can still be
used as work bits when their specific functions are not being used.
Range
IR 001 to IR 015
IR 090 to IR 095
IR 096 to IR 099
IR 100 to IR 115
IR 190 to IR 195
IR 196 to IR 199
IR 200 to IR 215
IR 220 to IR 223
IR 230 to IR 231
IR 232 to IR 243
I/O words are allocated to I/O Units and Dedicated I/O Units in order from the
left, beginning with IR 001 for inputs and IR 100 for outputs. The CPU Unit's
16 input points are allocated to IR 000. I/O bits are allocated in one-word
units, even for I/O Units that require only 8 bits.
Note Input and output bits are not allocated to Inner Boards or Communications
Units.
IR 01600 to IR 08915 (1,184 bits)
IR 11600 to IR 18915 (1,184 bits)
IR 21600 to IR 21915 (64 bits)
IR 22400 to IR 22915 (96 bits)
When allocated to Input Units, these bits serve as input bits.
When a Controller Link Unit is mounted to the PC, these bits
indicate the status of the Data Link.
When the MACRO instruction is used, these bits serve as
operand input bits.
When allocated to Output Units, these bits serve as output bits.
When a Controller Link Unit is mounted to the PC, these bits
indicate information on errors and nodes in the network.
When the MACRO instruction is used, these bits serve as
operand output bits.
These bits are used by an Inner Board mounted in slot 1.
These bits serve to store the analog settings when an Analog
Setting Board is installed.
When high-speed counter 0 is used, these bits are used to store
its present value.
These bits are used by an Inner Board mounted in slot 2.
Section 3-2
Bits
Function