Block Diagram (Order Of Processing) - Omron CJ Series Operation Manual

3 Isolated-type Universal Input Units
3-2-5

Block Diagram (Order of Processing)

CPU Unit
Expansion Operation Data
Top/valley value
Peak/bottom value Rate-of-change value
Operation Data
H, L
HH, H, L, LL
Cold junction
Process value Input error alarm
Process value alarm Rate-of-change alarm
sensor error
I/O refresh
Isolated-type Universal Input Unit
Rate-of-change
alarm
Process value alarm
Output limit: −15% to 115%
Rate-of-change
calculation and scaling
Input error: 115% or −15%
Output limit: −15% to 115%
Offset compensation
Input error check
Square root calculation (DC input only)
Zero/span adjustment
Process value scaling
Input calculations:
Thermocouple input only
• Input range
• Cold junction temperature compensation
(thermocouple input only)
A/D conversion, moving average
Cold junction sensor
Resistance thermometer, thermocouple,
DC input, or potentiometer
3-16 CJ-series Analog I/O Units Operation Manual for NJ-series CPU Unit(W498)