Omron CP1L Operation Manual page 481

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Analog I/O Units

First Cycle ON Flag

Always ON Flag

Handling Unit Errors

• When an error occurs in the Analog I/O Unit, analog input data will be

0000 and 0 V or 4 mA will be output as the analog output.

• Expansion Unit/Expansion I/O Unit errors are output to bits 0 to 6 of word

A436. The bits are allocated from A436.00 in order starting with the Unit

nearest the CPU Unit. Use these flags in the program when it is neces-

sary to detect errors.

Programming Example

This programming example uses these ranges:

Analog input 0: 0 to 10 V

Analog input 1: 1 to 5 V or 4 to 20 mA

Analog output: 0 to 10 V or 4 to 20 mA

← Writes the range code (FF04) to the Unit.

← Reads analog input 0's converted value.

Open-circuit alarm

← Reads analog input 1's converted value.

← The content of D10 is written to the output

word as the analog output set value.

TIM 0 will start as soon as power turns ON.

After 0.2 to 0.3 s (200 to 300 ms), the input for

TIM 0 will turn ON, and the converted data

from analog input 0 that is stored in word 2

will be transferred to D00000.

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