Status values for 2085-IRT4

Status (ST) is a read-only variable that indicates the actual non-configured state of the respective tag.
The ST variable is useful when using Forcing. After you force a tag to a certain state, the ST variable still shows the actual non-configured state of the tag. With the ST variable, you can:
  • Systematically compare the respective DO and ST status to find out any mismatch between what the program is sending and what the controller actually should be sending.
  • Programmatically check whether forcing is overriding the program scan and turning the physical value OFF.
  • If a tag status is forced, notice the mismatch of "Value" and "Physical Value", together with "Force", when the controller is connected.
Status values for the 2085-IRT4 expansion module
Status Variable
Bit (0–15)
Description
_IO_Xx_ST_00
0 to 15
Module status value 0
Bits:
  • 0 - S0 (Channel 0 Fault)
  • 1 - S1 (Channel 1 Fault)
  • 2 - S2 (Channel 2 Fault)
  • 3 - S3 (Channel 3 Fault)
  • 4 - R0 (RTD compensation for Channel 0)
  • 5 - R1 (RTD compensation for Channel 1)
  • 6 - R2 (RTD compensation for Channel 2)
  • 7 - R3 (RTD compensation for Channel 3)
  • 8 - OC0 (Open-Circuit Flag for Channel 0)
  • 9 - OC1 (Open-Circuit Flag for Channel 1)
  • 10 - OC2 (Open-Circuit Flag for Channel 2)
  • 11 - OC3 (Open-Circuit Flag for Channel 3)
  • 12 - DE0 (Data Error)
  • 13 - DE1 (Data Error)
  • 14 - DE2 (Data Error)
  • 15 - DE3 (Data Error)
For more information, see the bit definitions for the 2085-IRT4 expansion module.
_IO_Xx_ST_01
0 to 15
Module status value 1
Bits:
  • 0 - CJC DE (Cold Junction Compensation Data Error)
  • 1 - CJC OC (Cold Junction Compensation Open Circuit)
  • 2 - CJC under (Cold Junction Compensation under range)
  • 3 - CJC over (Cold Junction Compensation over range)
  • 4 - T0 (Thermocouple compensation for Channel 0)
  • 5 - T1 (Thermocouple compensation for Channel 1)
  • 6 - T2 (Thermocouple compensation for Channel 2)
  • 7 - T3 (Thermocouple compensation for Channel 3)
  • 8 - U0 (Underrange for Channel 0)
  • 9 - U1 (Underrange for Channel 1)
  • 10 - U2 (Underrange for Channel 2)
  • 11 - U3 (Underrange for Channel 3)
  • 12 - O0 (Over Range Flag for Channel 0)
  • 13 - O1 (Over Range Flag for Channel 1)
  • 14 - O2 (Over Range Flag for Channel 2)
  • 15 - O3 (Over Range Flag for Channel 3)
_IO_Xx_ST_02
0 to 15
Module status value 2
Bits:
  • 0 to 12 - Reserved
  • 13 - CRC (Cyclic Redundancy Check Error)
  • 14 - GF (General Fault)
  • 15 - PU (Power Up)
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