Spectrum Controls 1769sc-IT6I - Manual (Page 4)

iv Compact™ IO Isolated Thermocouple Module
User’s Manual Pub. 0300244-01 Rev. A
S ECTION 3.8 C OLD J UNCTION C OMPENSATION .............................................................................................................. 3-12
S ECTION 3.9 C ALIBRATION ......................................................................................................................................... 3-13
CHAPTER 4 MODULE DATA, STATUS, AND CHANNEL CONFIGURATION .............................................................. 4-1
S ECTION 4.1 M ODULE M EMORY M AP ........................................................................................................................... 4-1
S ECTION 4.2 C ONFIGURING C HANNELS ........................................................................................................................... 4-2
4.2.1 Configuration Data File ............................................................................................................................ 4-2
4.2.2 Channel Configuration ............................................................................................................................. 4-3
U NUSED ................................................................................................................................................................. 4-3
C HANNEL D ISPLAY ................................................................................................................................................ 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
D ATA F ORMAT ....................................................................................................................................................... 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
S ECTION 4.3 I NPUT I MAGE F ILE .................................................................................................................................... 4-9
S ECTION 4.4 I NPUT D ATA F ILE .................................................................................................................................... 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
S ECTION 5.1 S AFETY C ONSIDERATIONS .......................................................................................................................... 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
S ECTION 5.2 M ODULE O PERATION VS . C HANNEL O PERATION ............................................................................................ 5-2
S ECTION 5.3 P OWER -U P D IAGNOSTICS .......................................................................................................................... 5-2
S ECTION 5.4 C HANNEL D IAGNOSTICS ............................................................................................................................. 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