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iv
Compact™ IO Isolated Thermocouple Module
SECTION 3.8 COLD JUNCTION COMPENSATION .............................................................................................................. 3-12
SECTION 3.9 CALIBRATION ......................................................................................................................................... 3-13
CHAPTER 4 MODULE DATA, STATUS, AND CHANNEL CONFIGURATION .............................................................. 4-1
SECTION 4.1 MODULE MEMORY MAP ........................................................................................................................... 4-1
SECTION 4.2 CONFIGURING CHANNELS........................................................................................................................... 4-2
4.2.1 Configuration Data File ............................................................................................................................ 4-2
4.2.2 Channel Configuration ............................................................................................................................. 4-3
UNUSED ................................................................................................................................................................. 4-3
CHANNEL DISPLAY ................................................................................................................................................ 4-3
4.2.3 Enabling or Disabling a Channel (Bit 15) .................................................................................................. 4-3
4.2.4 Selecting Data Formats (Bits 12 through 14) ........................................................................................... 4-4
DATA FORMAT ....................................................................................................................................................... 4-4
Raw/Proportional Data ................................................................................................................................................... 4-4
Engineering Units x1 ....................................................................................................................................................... 4-5
Engineering Units x10 ..................................................................................................................................................... 4-5
Scaled for PID .................................................................................................................................................................. 4-5
Percent Range ................................................................................................................................................................. 4-5
4.2.5 Selecting Input Type (Bits 8 through 11) .................................................................................................. 4-5
4.2.6 Selecting Temperature Units (Bit 7) ......................................................................................................... 4-5
4.2.7 Determining Open-Circuit Response (Bits 6 and 5) .................................................................................. 4-6
4.2.8 Display CJC Data (Bit 4) ............................................................................................................................ 4-6
4.2.9 Selecting Input Filter Frequency (Bits 0 through 2) .................................................................................. 4-6
Effects of Filter Frequency on Noise Rejection ............................................................................................................... 4-7
Cut-Off Frequency........................................................................................................................................................... 4-7
Repeatability ................................................................................................................................................................... 4-8
Module Update Time ...................................................................................................................................................... 4-8
SECTION 4.3 INPUT IMAGE FILE .................................................................................................................................... 4-9
SECTION 4.4 INPUT DATA FILE .................................................................................................................................... 4-10
4.4.1 Input Data Values ................................................................................................................................... 4-10
4.4.2 General Status Bits (S0 to S7) ................................................................................................................. 4-10
4.4.3 Open-Circuit Flag Bits (OC0 to OC7) ....................................................................................................... 4-11
4.4.4 Over-Range Flag Bits (O0 to O7) ............................................................................................................ 4-11
4.4.5 Under Range Flag Bits (U0 to U7) .......................................................................................................... 4-11
CHAPTER 5 DIAGNOSTICS AND TROUBLESHOOTING ........................................................................................... 5-1
SECTION 5.1 SAFETY CONSIDERATIONS .......................................................................................................................... 5-1
5.1.1 Indicator Lights ......................................................................................................................................... 5-1
5.1.2 Stand Clear of Equipment ......................................................................................................................... 5-1
5.1.3 Program Alteration .................................................................................................................................. 5-1
5.1.4 Safety Circuits ........................................................................................................................................... 5-1
SECTION 5.2 MODULE OPERATION VS. CHANNEL OPERATION ............................................................................................ 5-2
SECTION 5.3 POWER-UP DIAGNOSTICS .......................................................................................................................... 5-2
SECTION 5.4 CHANNEL DIAGNOSTICS ............................................................................................................................. 5-2
5.4.1 Invalid Channel Configuration Detection ................................................................................................. 5-2
5.4.2 Over or Under Range Detection ............................................................................................................... 5-3
5.4.3 Open Circuit Detection ............................................................................................................................. 5-3
User’s Manual Pub. 0300244-01 Rev. A