CTH200 Series PLC User Manual
【DIP Configuration】
SM231 TC module, supports J/K-type thermocouple, provide a 6-bit DIP switch to set
measurement Unit, Cold-junction compensation and open-circuit fault direction. As with SM231
8TC, it detect open-wire forcely.
6-bit DIP switch is located below the module as shown in the following figure. SW1~SW2 are
unused, SW3 for TC type, SW4 for open-wire detect direction, SW5 for measurement Unit, SW6
for Cold-junction enable. Cut-off and recycle the PLC power to make the DIP configuration
effective.