OMRON CS1W-EIP21 PLC

OMRON CS1W-EIP21 PLC

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 096 to IR 099

Function

When the MACRO instruction is used, these bits serve as op

erand input bits.

IR 196 to IR 199

When the MACRO instruction is used, these bits serve as op

erand output bits.

IR 230 to IR 231

When high-speed counter is used, these bits are used to store

its present value.

LR 00 to LR 63 are used as link bits, but they can also be used as work bits when

not linked to another ID Controller. Refer to the CQM1 Programming Manual for

details on using link bits in 1-to-1 communications.

These bits mainly serve as flags related to ID Controller operation. For details on

the various bit functions, refer to Appendix D AR and SR Area Allocations.

SR 244 to SR 247 can also be used as work bits, when input interrupts are not

used in Counter Mode.

When a complex ladder diagram cannot be programmed in mnemonic code just

as it is, these bits are used to temporarily store ON/OFF execution conditions at

program branches. They are used only for mnemonic code. When programming

directly with ladder diagrams using the Ladder Support Software (LSS) or SYS

MAC Support Software (SSS), TR bits are automatically processed for you.

The same TR bits cannot be used more than once within the same instruction

block, but can be used again in different instruction blocks. The ON/OFF status

of TR bits cannot be monitored from a Peripheral Device.

These bits retain their ON/OFF status even after the ID Controller power supply

has been turned off or when operation begins or stops. They are used in the

same way as work bits.

These bits mainly serve as flags related to ID Controller operation. For details on

the various bit functions, refer to relevant sections in this manual or to Appen

dix D AR and SR Area Allocations.

When the ID Controller is linked one to one with another ID Controller, these bits

are used to share data. Refer to the CQM1 Programming Manual for details on

using link bits in 1-to-1 communications.

LR bits can be used as work bits when not used for data links.

Timers/Counters Area

This area is used to manage timers and counters created with TIM, TIMH(15),

CNT, and CNTR(12). The same numbers are used for both timers and counters

and each number can be used only once in the user program. Do not use the

same TC number twice even for different instructions.

TC number are used to create timers and counters, as well as to access Comple

tion Flags and present values (PVs). If a TC number is designated for word data,

it will access the present value (PV); if it is used for bit data, it access the Comple

tion Flag for the timer/counter.

The Completion Flag turns ON when the PV of the timer/counter that is being

used goes to 0.

Refer to the CQM1 Programming Manual for details on timers and counters.

Note 1. TC numbers 000 through 015 and interrupt processing should be used for

TIMH(15) whenever the cycle time is longer than 10 ms. Using other timer/

counter numbers or not using interrupt processing will lead to inaccuracy in

the high-speed timers. Interrupt processing can be set in DM 6629 of the ID

Controller Setup.

2. When the input condition turns OFF for TIM or TIMH(15), the PV is reset and

returns to the set value. The PV is also reset at the beginning of program

execution or when the interlock condition goes OFF in a interlocked pro

gram section (IL–ILC). The PV for CNT or CNTR(12) is not reset like one for

the timer instruction, but rather is reset only when the reset input goes ON