Omron CP1H-X40D - Page 435

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Analog Input Units Section 7-2
Handling Unit Errors • When an error occurs in an Analog Input Unit, the analog input conversion
data becomes 0000.
• CP-series Expansion 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 necessary to
detect errors.
Ladder Program Example
Analog
input
Input range Range code Averaging Set data Destination
word
Input 1 0 to 10 V 01 Yes 1101 (D hex) n+1
Input 2 4 to 20 mA 10 Yes 1110 (E hex) n+1
Input 3 −10 to +10 V 00 No 1000 (8 hex) n+2
Input 4 Not used. −(00) --- 0000 (0 hex) n+2
Analog input 2 open circuit alarm
P_EQ
100.00
Execution
condition
Execution
condition
Execution
condition
Execution
condition
←Reads analog input 1 converted value.
←Reads analog input 3 converted value.
←Reads analog input 2 converted value.
←Writes set data E and D.
←Writes set data 0 and 8.
Always ON
P_On
First Cycle Flag
A200.11
MOV(021)
#80ED
102
TIM
0005
#0002
3
#8000
CMP(020)
MOV(021)
#8008
103
2
D100
MOV(021)
4
D102
MOV(021)
3
D101
MOV(021)
T0005
T0005
T0005
T0005