1766-RM001A-EN-P MicroLogix 1400 Programmable Controllers ...

26 I/O Configuration1762-IT4 Thermocouple Module Input Data FileFor each module, slot x, words 0…3 contain the analog values of theinputs. The input data file is shown below.Table: 0.BWord/Bit15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 00123SGN SGN SGN SGNAnalog Input Data Channel 0Analog Input Data Channel 1Analog Input Data Channel 2Analog Input Data Channel 34 Reserved OC4OC3OC2OC1OC0Reserved S4 S3 S2 S1 S05 U0 O0 U1 O1 U2 O2 U3 O3 U4 O4 ReservedThe bits are defined as follows:• Sx = General status bits for channels 0…3 (S0…S3) and the CJCsensor (S4). This bit is set (1) when an error (over-range,under-range, open-circuit, or input data not valid) exists for thatchannel. An input data not valid condition is determined by the userprogram. Refer to MicroLogix 1200 I/O Thermocouple/mV InputModule User Manual, publication 1762-UM002 for additional details.• OCx = Open-circuit indication for channels 0…3 (OC0…OC3) andthe CJC sensor (OC4).• Ox = Over-range flag bits for channels 0…3 (O0…O3) and the CJCsensor (O4). These bits can be used in the control program for errordetection.• Ux = Under-range flag bits for channels 0…3 (U0…U3) and the CJCsensor (U4). These bits can be used in the control program for errordetection.Publication 1766-RM001A-EN-P - October 2008