Measurement Computing TC-32 User Manual

TC-32
User's Guide
Document Revision 2
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32-Channel Thermocouple Input USB/Ethernet DAQ Device
HM TC-32.docx
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2
Table of Contents
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Preface
About this User's Guide ....................................................................................................................... 5
What you will lear n from this user's guide ......................................................................................................... 5
Conventio ns in this user's guide ......................................................................................................................... 5
Where to find more information ......................................................................................................................... 5
Chapter 1
Introducing the TC-32 ........................................................................................................................... 6
Ethernet interface ................................................................................................................................................ 6
USB interface ..................................................................................................................................................... 6
Functional block diagram ................................................................................................................................... 7
Chapter 2
Installing the TC-32 ............................................................................................................................... 8
Unpacking........................................................................................................................................................... 8
Installing the software ........................................................................................................................................ 8
Connecting the external power adapter .............................................................................................................. 8
Installing the hardwar e ....................................................................................................................................... 8
Installing on USB.............................................................................................................................................................. 8
Installing on Ethernet ........................................................................................................................................................ 8
IP address settings ............................................................................................................................................................. 9
Setting up the TC-32 for communication across networks ................................................................................. 9
Calibrating the hardware................................................................................................................................... 10
Factory calibration ...........................................................................................................................................................10
Field calibration ...............................................................................................................................................................10
Updating firmware ............................................................................................................................................ 10
Restoring factory default network settings ....................................................................................................... 10
Chapter 3
Functional Details ............................................................................................................................... 11
External components ........................................................................................................................................ 11
USB connector .................................................................................................................................................................11
Ethernet connector ...........................................................................................................................................................11
External power connector ................................................................................................................................................11
TC input connectors, measurements, and LED ................................................................................................................11
Digital I/O ........................................................................................................................................................................13
LED indicators .................................................................................................................................................................14
EXPANSION connector ..................................................................................................................................................15
Chassis ground connector ................................................................................................................................................15
RESET button ..................................................................................................................................................................15
Mechanical drawings ........................................................................................................................................ 16
Chapter 4
Specifications ...................................................................................................................................... 18
Thermocouple input .......................................................................................................................................... 18
Channel configuration ...................................................................................................................................... 19
Compatible thermocouple sensors .................................................................................................................... 19
Accuracy ........................................................................................................................................................... 19
Thermocouple measurement accuracy .............................................................................................................................19
Digital input/output........................................................................................................................................... 20
Temperature alarms .......................................................................................................................................... 21
Memory ............................................................................................................................................................ 21
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Microcontroller ................................................................................................................................................. 21
Power ................................................................................................................................................................ 21
USB .................................................................................................................................................................. 22
Network ............................................................................................................................................................ 22
Ethernet connection .........................................................................................................................................................22
Network interface ............................................................................................................................................................22
Network factory default settings ......................................................................................................................................23
Network security ..............................................................................................................................................................23
LED displays and the factor y reset button ........................................................................................................ 23
Environment ..................................................................................................................................................... 23
Mechanical ....................................................................................................................................................... 23
Signal I/O connectors ....................................................................................................................................... 24
Declaration of Conformity .................................................................................................................. 26
4
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About this User's Guide

What you will learn from this user's guide

This user's guide describes the Mea s urement Co mputing TC-32 data acquisition device and lists device specifications.

Conventions in this user's guide

For more information
Text presented in a box signifies ad ditional information related to the subject matter. Caution! Shaded caution statements present information to help you avoid injuring yourself and others,
damaging your hardware, or losing your data.
bold text Bold text is used for the names of objects on a screen, such as buttons, text boxes, and check boxes.
italic text Italic text is used for the names of manuals and help topic titles, and to emphasize a word or phrase.
Preface

Where to find more informati on

Additional information about TC-32 hardware is available on our website at www.mccdaq.com. You can also contact Measurement Computing Corporation with specific questions.
Knowledgebase: Tech support form: Email: Phone: 508-946-5100 and follow the instructions for reaching Tech Support
For international customers, co ntact your local distributor. Refer to the I nter national Distributors section on our website at
techsupport@mccdaq.com
www.mccdaq.com/International.
kb.mccdaq.com
www.mccdaq.com/support/support_form.aspx
5
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Introducing the TC-32

The TC-32 is a dual-interface data acquisition device that provide s the following features:
Chapter 1
32 differential thermocouple (TC) inputs, expandable to 64 channels with
TC-32-EXP expansion d evice
Two 24-bit ADCs (one ADC per 16 input s ) TC channels field-to-host isolation 3 S/s per update rate Support for type J, K, R, S, T, N, E, and B thermocouples, software-selectable per channel One integrated cold j unction compe ns ation (CJC) sensor p er TC input Open thermocouple detection (OTD) to detect faulty TC connections 8 digital inputs, isolated from TC and host 32 digital outputs/alarms isolated from TC inputs and host DIO connections are made to 50-pin header connector USB 2.0 or 10/100 Ethernet interf ac e Powered by the included +5 V external power adapter (PS-5V2AEPS)
1

Ethernet interface

The TC-32 has a built-in 10/100 BASE-T auto-negotiati on, hig h -speed communication port. With the Ethernet interface, you can remotely access and configure your TC-32 from anywhere on the network.
Only one computer can co ntrol the TC-32 at a time. A unique media access control (MAC) address is assigned to each device at the factory. You configure the
Ethernet connection settings through software. The networ k name uses the format
xxxxxx are the lower six digits of the factory-assigned MAC address.
TC-32-xxxxxx, where

USB interface

The TC-32 is a USB 2.0 full-speed device that is compatible with USB 3.0 ports. The device is also compatible with USB 1.1 ports.
1
40-pin ribbon cable for the EXPANSION connector is included with the TC-32-EXP.
6
TC-32 User's Guide Introducing the TC-32
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Functional block diagram

Device functions are illustrated in the block di agram shown here:
Figure 1. TC-32 functional block diagram
7
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Chapter 2

Installing the TC-32

Unpacking

As with any electronic device, you should take care while handling to avoid damage from static electricity. Before removing the board from its packaging, ground yourself using a wrist strap or by simply touching the computer chassis or other grounded object to eliminate any stored static charge.

Installing the software

Refer to the MCC DAQ Software Quick Start for instructions on installing the software on the MCC DAQ CD. Refer to the d evice product page on the Measurement Computing website for information about the included and optional software supported by the TC-32.
Install the software before you install your device
The drive r needed to run the TC-32 is installed with the software. Therefore, you need to install the software package you plan to use before you install the hardware.

Connecting the external pow e r a dapter

Power to the TC-32 is provided with the 5 V external power adapter (PS-5V2AEPS). Connect the adapter cord to the power connector on the TC-32 device, and plug the AC adapter into an electrical outlet.
Power LED turns on when 5 V power is supplied to the TC-32. If the voltage supply is less than 4.0 V or
The more than 5.75 V, the
Refer to Figure 2 on page 11 for the location of the Power LED.
POWER LED does not turn on.

Installing the hardware

Installing on USB

Connect the TC-32 using the cable provided to a to a USB port on a c omputer running Windows. Windows finds and i nstalls the device driver automatically, and notifies you that the device is ready to use.

Installing on Ethernet

The TC-32 requires a TCP/IP and UDP connection to a network or computer. Use the standard Ethernet cable provided to connect the TC-32 to a 10Base-T or 100Base-TX compatible Ethernet port, hub, or switch.
When connec ting the TC-32 for the first time, make sure that you connect to a local network with DHCP enabled.
If you are unsure whether you have access to a local network or that DHCP is enabled on that network, you should use a direct connection to a Windows PC.
It may take a minute or two to detect the device and assign the address. The green lower left of the Etherne t connecto r turns on whe n there is a valid Ethernet link, and blinks when network activity is detected.
Link/activity LED on the
Once the TC-32 is physically connected to the local network or PC, you can run the software (InstaCal for example) to establish a connection. If a connection cannot be established, make sure the device is using the default configuration by following the instructions in the
Once a connection is established and you can communicate to the device, you can change the configuration for other netwo rk scenarios.
Restoring factory default network settings on page 10.
8
TC-32 User's Guide Installing the TC-32
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Configuring network settings
The following TC-32 network settings are software-selectable. Only one user at a time can connect to the TC-32 to configure network options on the device. For typical local networks, the default settings are recommended.
Address mode settings
The address mode setting determines whether the default IP parameters (IPv4 address, subnet mask, and gateway) are assigned to the TC-32 or an auto-addressing method is used to assign these parameters.
DHCP or link-local enabled (default)
If connected to a network with a DHCP server, the service automatically assigns IP addresses to the TC-32. If the connected network does not have a DHCP server, the address stored in the default IP address is assigned
to the TC-32. If the TC-32 is directly connected to a Windows PC or other host that supports link-local addressing, a link-
local address is assigned to the device. A link-local address is valid only for communications between the TC-32 and the device to which it is connected
DHCP Only
Enables configuration by a DHCP server if one is available. The TC-32 is assigned a n IP address shortly after it is powered up and attached to the network.
Link Local Only
The TC-32 is assigned a link-lo cal IP address by the Windows PC or other host that supports link-local addressing. A link-local ad dress is valid only for communications bet ween the TC-32 and the device to which it is connected.
Static
The default
IPv4 Address is manually configured on the TC-32.

IP address settings

The default settings of the following IP address are assigned to the TC-32 when auto matic addressing is disabled or not available (DHCP or Link Local for example)
IPv4 address – The IP address that is stored on the device. The default IPv4 address is 192.168.0.101.
Subnet mask – The Subnet mask that is stor ed on the TC-32 . The subnet mask determines the nu mber of
bits of the IP address that is used for the host portion of the address vs. the number of bits used for the network portion. The default subnet mask is 255.255.255.000
Gateway – The gateway IP address that is stored on t he TC-32. The gateway address of the device that
bridges subnets within a network. The default gateway is 192.168.0.1
Connection code
The connection code is a number between 0 (default) and 999999999. You can change thi s number from its default of 0 to prevent other users from connecting to and configuring the device. The de vi ce remains visible to other users on the network, but connec tion by another user is not allowed.

Setting up the TC-32 for communication across networks

In order to communicate with the TC-32 from a computer connected to a different network – such as over the Internet – you must change the network configuration of the network router.
In the following procedure, the TC-32 is installed on the host LAN, the computer is installed on the client LAN, and it is assumed that you have you have successfully connected the device to a local network.
Caution! This procedure should only be performed by a network administrator or computer professional.
Incorrect settings can significant ly disrupt a ne twork.
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TC-32 User's Guide Installing the TC-32
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1. Determine the IP address of the device. If the address was assigned by DHCP, it is recommended you
change it to a static address by setting the default address to the address assigned and setting the device network configuration to static.
2. Configure the firewall/router to forward incoming traffic to the following ports to the IP address assigned
to the device:
o UDP:54211 (discovery) o TCP:54211 (commands)
3. On the computer connected to the client LAN, manually enter the WAN address of the host router, and
specify the ports that were forwarded to connect to the remote TC-32.

Calibrating the hardware

Factory calibration

The Measurement Computing Manufacturing Test department performs the initial factory calibration. Return the device to Measurement Computing Corporation when calibration is required. The recommended calibration interval is one year.

Field calibration

The TC-32 supports field calibration. Calibrate the device using InstaCal whenever the ambient temperature changes by more than ±10 °C fro m the last calibration.
The following items are required to perform field calibration on a TC-32:
a precision voltage source a voltmeter
Each AD C (two ADCs per device) is measured at three points and a linear correction is calculated. When prompted, enter the voltmeter reading to a precision of three decimal places. MCC strongly recommends that you warm up the TC-32 for at least 20 minutes prior to performing field
calibration.

Updating firmware

Your DAQ device contains firmware that can be updated in the field if required. Firmware is available for download at if an update to your device firmware is available.
www.mccdaq.com/firmware.aspx. MCC recommends that you check this page periodically to see

Restoring factory default network settings

To reset the network configuration settings to the factory default values, complete the following steps:
1. Use a ballpoint pen to press and hold in the Reset button for at least four seconds until both the Power and
Activity LEDs blink , indicating that the settings have been restored to the factory defaults.
2. Release the button so the device continues startup with the default settings. If the button is released before
the two LEDs blink, the settings are not affected and the device starts up normally.
If InstaCal is open when default settings are restored, click the to reflect the changes.
Refresh Boards button on the InstaCal toolb a r
10
1
TC input channels 0 through 31 (32 mini-jack connectors)
4
ALARM LED
2
POWER LED
5
OPEN TC LED
3
ACTIVITY
1
RESET
6
Chassis ground connector
2
USB connector
7
40-pin EXPANSION connector
ETHERNET
DIN
4
External power (EXT DC) connector
9
32 digital output (DOUT) pull-up switches
5
PWR
10
DIGITAL I/O
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Functional Det ails

External components

TC-32 front panel components are shown in Figure 2.
LED
Figure 2. TC-32 front panel components
TC-32 rear panel components are shown in Figure 3.
Chapter 3
Factory
3
Power switch (
button
connector 8 Eight digital input (
)
Figure 3. TC-32 rear panel components
50-pin
) pull-up switches
connector

USB connector

The USB connector provides USB communication.

Ethernet connector

The E-1608 has one 10/100 BASE-T, auto-negotiation, high-speed communication port. The port connector is an RJ-45, eight-position connector. The Ethernet port accepts CAT-5 shielded or unshielded twisted pair cable. The maximum communication distanc e without using a repeat er is 100 meters.

External power connector

Connect the PS-5V2AEPS power supply to this connector. The power supply provides 5 VDC, 2 A power t o the TC-32.

TC input connectors, measurements, and LED

A thermocouple consists of two dissimilar metals that are joined together at one end. When the junction of the metals is heated or cooled, a voltage is produced that correlates to temperature.
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TC-32 User's Guide Functional Details
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You can add another 32 differential TC input connections to mini-jack connectors labeled CH0 through CH31 (refer to Figure 2).
The device supports type J, K, S, R, B, E, T, N thermocouples. Caution! MCC strongly recommends that you ground yourself u sing a wrist strap before handling the
thermocouple sensors.
Connecting TCs to common-mode voltage sources
You can connect a thermocouple to a common voltage source (AC or DC) as long as the magni tude of the voltage is within the co mmon mode voltage range specification of 48V (DC) or 3.5V p-p (AC).
Each applied common mode voltage must be less than or equal to the average common mode voltage ±1.4 V. For example, in Figure 4, ther e ar e three TCs connected to three different common mode voltage sources and
two thermocouples that are not connected to anything (floating). In this example, the average common mode voltage is calculated as follows: (11.4 V+ 10 V + 8.6 V)/3 = 10 V
Each TC channel becomes biased to the average common mode voltage of 10 V. Each commo n mode voltage must then be within the 10 V ±1.4 V limits or 8.6 V to 11.4 V.
Figure 4. TC-32 common mode voltage connections example
Cold junction compensation (CJC)
Each TC input on the TC-32 has a high-resolution CJC sensor. When you connect the thermocouple sensor leads to the sensor input channel, the d issimilar metals at the TC-32 terminal blocks produce an additional thermocouple junction. This junction creates a small voltage error term which must be removed from the overall sensor measurement using a CJC technique.
The measured voltage includes both the thermocouple volta ge and the cold junction volt age. To compensate for the additional cold junction voltage, the TC-32 subtracts the cold junction voltage from the thermocouple voltage.
Increasing the thermocouple length
If you need to increase the length of your thermocouple, use the same type of TC wires to minimize the error introduced by thermal EMFs.
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Data linearization
After the CJC correction is performed on the measurement data, an on-board microcontroller automatically linearizes the thermocouple measurement data using National Institute of Standards and Technology (NIST) linearization coefficients for the selected thermocouple type.
The measurement data is t hen output as a 32-bit floating point value in the configured format (vo l tage or temperature).
Open-thermocouple detection (OTD)
The TC-32 is equipped with OTD for all analog input channel. Wi th OTD, any op en-circuit condition at the TC sensor is detected b y the software. An open channel is detected by the use of a pull up a nd pull down resistors on the thermocouple inp uts. An open thermocouple co nd ition forces the input differential volta ge outside of the valid thermocouple voltage ra nge. The software r eco gnizes this as an invalid reading and flags the appropriate channel. The software continues to sample all channels when OTD is detected.
Input leakage current
With OTD e nabled, 75 nA (max) of input leakage current is injected into the TC. This current can cause an error voltage to develop across the lead resistance of the TC that is indistinguishable from the thermocouple voltage you a re measuring. You can est imate this error voltage with the following formula:
error voltage = resistance of the thermocouple × 75 nA
To reduce the error, reduce the length of the TC to lower its resistance, or lower the AWG of the wire by using a wire with a larger diameter. With open-thermocouple detection disabled, 2 nA (max) of input leakage current is injected into the TC.

Digital I/O

The TC-32 provides up to eight digital inputs and 32 digital outputs that are electrically isolated from the host computer and from the TC-32 analog circuits.
All DIO bits have internal pull-up resistors to 5 V that can be disconnected with the rear panel slide switches. The reco mmended maximum length of the 50-pin cable used to connect the
digital I/O signal source is 1 foot.
Digital inputs
The TC-32 provides \ digital inputs with rates of 500 port reads or single bit reads per second. Digital input voltage ranges of 0 V to 15 V are permitted, with thresholds of 0.6 V (low) and 2.2 V (high). Each digital input has a 100 kΩ pull-up resistor. Use the eight
PULL-UP ENABLE – DIN slide switches to
enable or disable the 5 V pull-up option.
Digital outputs/temperature alarms
Each digital output is open-drain, which can of sink up to 100 mA for direct drive applications. Each digital input has a 100 kΩ pull-up resistor. Use the eight
PULL-UP ENABLE – DOUT slide switches to
enable or disable the 5 V pull-up option. Optionally, you can configure e a c h d igital output as an alarm for each TC input. When an alarm is enabled, its
associated output line is driven to the appropriate state determined by the alarm options and input temperature. You can also use the alarm outputs to control a device or application that indicate s when a temperature
threshold has been exceeded.
DIGITAL I/O connector to the
The alarm configurations are stored in non-volatile memory and loaded at power up. Alarm settings are applied when changed and at power on. Temperatures are constantly converted on enabled
channels and processed for alarm conditions regardless of the communications connectivity.
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TC-32 User's Guide Functional Details
Trigger alarm when input temperature ≥ T1; reset alarm when
Trigger alarm when inp ut temperature is < T1 or > T2
Alarm on temperature reading only
Alarm disabled; digital output line can be used for normal
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Each available alarm mode and setting is explained below.
Alarm input modes
Set independent temperat ure thresholds T1 and T2 for each alarm.
Alarm error modes
input temperature < T2
Trigger alarm when input temperature ≤ T1; reset alarm when
input temperature > T2
 
Alarm on temperature reading, open thermocouple, or common-
mode voltage error
Alarm on open thermocouple or common-mode voltage error only
Alarm output modes
operation
Alarm enabled; active low output (output line goes low when
alarm condition is met)
Alarm enabled; active high output (output line goes high when
alarm condition is met)
Alarm output may be latched and will not clear unless explicitly
cleared by the user
The TC-32 provides three alarm indicators –the ALARM LED, the OPEN TC LED o n t he front panel and, optionally, the user-configurable digital outputs associated with each channel.
Because the digital alarm outputs are user-configurable, they can be used to supply additional information (visually, if the digital outputs are used to drive LEDs), such as the channel associated with the alarm condition or differentiating between threshold and CMV alarms.
Pull-up configuration
By default, pull-up is enabled for all e ight digital inputs and all 32 digital output s. Slide switches on the rear of the housin g can disable p ull-up for each digital input bit and digital output bit.

LED indicators

The TC-32 has four LEDs that indicate the power, communication, alarm, and open TC status
POWER LED
The POWER LED turns on when you plug the power adapter into the TC-32. If a Flash LED command is sent from an application, the
ACTIVITY LED
The ACTIVITY LED turns on when there is a valid connection (USB or Ethernet) and blinks when a command is sent to the TC-32.
ALARM LED
ALARM LE D turns on wh en an alarm condition occurs.
The
OPEN TC LED
The OPEN TC LED turns on when there is an open thermocouple condition.
2
Power LED blinks five times.
2
2
Both the POWER and ACTIVITY LEDs blink in firmware upgrade mode. Refer to Updating firmware on page 10.
14
TC-32 User's Guide Functional Details
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EXPANSION connector

Use the EXPANSION connector to connect the TC-32 to a TC-32-EXP expansion device (sold separately) for applications that need additional analog/thermocouple input and digital I/O channels. A 40-pin expansion cable is included with the TC-EXP-32.
Refer to
www.mccdaq.com for TC-32-EXP product details.

Chassis ground connector

Provides a connection point (#6-32 screw) for chassis ground. C onnect this to a n external grounding source. If the TC-32 is connected by USB or by a shielded Ethernet cable to grounded equipment, connecting to an
external grounding source is not needed since the USB/shielded Ethernet connection already grounds the TC-32 and a connected TC-32-EXP.

RESET button

Press and hold this button to restore the TC-32 to its factory default network settings. Refer to Restoring factory
default netwo rk se tt i ng s on page 10
15
TC-32 User's Guide Functional Details
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Mechanical drawings

Figure 5. Enclosure dimensions - front
16
Figure 6. Enclosure dimensions - rear
TC-32 User's Guide Functional Details
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Figure 7. Enclosure dimensions – side
Figure 8. Circuit board dimensions
17
A/D resolution
24-bit
Number of channels
32
50 Hz or 60 Hz noise filtering, software-
Between any TCx channel and chassis
Software-selectable t o match thermocouple Differential input voltage range
±78.125 mV
Absolute maximum input
±25 V (power on) ±25 V (power off)
50 Hz filtering, power on
26 MΩ
60 Hz filtering, power on
20 MΩ
Open thermocouple detect disabled
2 nA
Open thermocouple detect enabled
75 nA
50 Hz filtering, at DC and fin=50 Hz
110 dB
60 Hz filtering at DC and fin=60 Hz
110 dB
50 Hz filtering at fin =50 Hz
80 dB typ.
60 Hz filtering at fin =60 Hz
80 dB typ.
50 Hz filtering
22 Hz
60 Hz filtering
26 Hz
Crosstalk
Between any two TCx inputs
-90 dB
Sample rate (Note 1)
3 Hz max (per channel)
TCx channel to TCx channel
±1.40 V
TCx channel relative to chassis ground, fin = 60 Hz
TCx channel relative to chassis ground
±48 V DC
Input noise
50 Hz or 60 Hz filtering
510 nV rms
Gain error
50 Hz or 60 Hz filtering
0.004 % FSR
Offset error
50 Hz or 60 Hz filtering
3 µV
Thermocouple type J,K,T,E,N
0.07 °C
Thermocouple type R,S
0.18 °C
Thermocouple type B
0.60 °C
Warm-up time
20 minutes min
Open thermocouple d etect
±0.20 °C typ
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Specifications

All specifications are subject to change without notice. Typical for 25 °C unless otherwise specified. Specifications in italic text are guaranteed by design.

Thermocouple input

Table 1. Generic analog input specifications
Parameter Condition Specification
A/D converter type Delta-Sigma
Chapter 4
Filtering options
Isolation
Channel configuration
voltage Differential input impedance
Input current
Common mode rejection
Noise rejection
Input bandwidth
Common mode voltage range (Note 2)
ground.
Between any two TCx inputs
selectable 500 VDC absolute max
sensor type
±3.5 VAC p-p
Measurement sensitivity (Note 3)
response time
CJC sensor accuracy 0 °C to 45 °C
Note 1: The enabled thermocouple inputs are continuously converted at the maximum A/D converter rate.
1 second
±0.40 °C max
18
TC-32 User's Guide Specifications
Thermocouple
J, K, S, R, B, E, T, N
32 differentia l cha nne ls
J: –210 °C to 1200 °C
K: –270 °C to 1372 °C
R: –50 °C to 1768 °C
T: –270 °C to 400 °C
N: –270 °C to 1300 °C
E: –270 °C to 1000 °C
B: 0 °C to 1820 °C
Sensor
Sensor
Accuracy Error
15°C to 35°C
Accuracy Error
15°C to 35°C
Accuracy Error
0°C to 45°C
Accuracy Error
0°C to 45°C
–210
1.965
0.910
2.167
0.989
0
0.787
0.361
0.816
0.375
1200
0.752
0.371
1.148
0.508
–210
2.295
1.061
2.520
1.152
0
0.821
0.376
0.852
0.392
1372
1.029
0.504
1.560
0.688
–50
2.467
1.111
2.655
1.223
250
1.835
0.825
1.961
0.904
–50
2.609
1.174
2.810
1.293
250
1.862
0.837
1.992
0.918
1768
0.754
0.305
1.346
0.520
250
2.450
1.090
2.707
1.254
700
0.937
0.424
1.136
0.520
1820
0.610
0.300
1.056
0.467
–200
1.754
0.811
1.933
0.880
0
0.775
0.355
0.806
0.369
1000
0.657
0.323
0.989
0.437
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Note 2: When thermocouple sensors are connected to different common mode voltages, the channels with
floating thermocouples sensors will be biased to approximately the average value of the applied common mode voltages. Each of the applied common mode voltages must then be less than or equal to the average common mode voltage ±1.40 V or [CMV
applied
≤ (CMV
Note 3: Measurement sensitivity is the smallest change in temperature that can be detected.
average
±1.4 V)].

Channel configuration

Table 2. Channel configuration specification
Sensor Category Condition Specification
Note 4: Channel configuration is stored on EEPROM external to the isolated microcontroller by the firmware
whenever any item is modified. Modification is performed by commands issued from an external application, and the configuration is made non-volatile through the use of the EEPROM.

Compatible thermocouple s e ns ors

Table 3. Compatible sensor type specifications
Parameter Specification
Thermocouple
S: –50 °C to 1768 °C

Accuracy

Thermocouple measurement accuracy

Table 4. Thermocouple accuracy specifications, including CJC measurement error. All specifications are (±).
Type
J
K
S
R
Temperature (°C)
1768 0.893 0.361 1.519 0.590
Maximum (°C),
Typical (°C),
Maximum (°C),
Typical (°C),
B
E
19
TC-32 User's Guide Specifications
Sensor
Sensor
Accuracy Error
15°C to 35°C
Accuracy Error
15°C to 35°C
Accuracy Error
0°C to 45°C
Accuracy Error
0°C to 45°C
–200
2.005
0.923
2.207
1.005
0
0.836
0.382
0.874
0.400
400
0.544
0.255
0.659
0.297
–200
2.255
1.038
2.481
1.134
1300
0.718
0.357
1.157
0.510
Number of inputs
8 channels
Configuration
Fixed input
Input volt a ge range
0 V to +15 V
Input type
CMOS (Schmitt trigger)
Input characteristics
100 kΩ pull-up resistor, 28.7 kΩ series resistor
Maximum input voltage range
0 V to +20 V max (power on/ of f, relative to IGND pins)
Pull-up configuration
All pins pulled up to +5 V via individual 100 kΩ resistors using slide switch SW5. Transfer rate (software paced)
500 port reads per second typ.
Input high voltage
1.3 V min, 2.2 V max
Input low voltage
1.5 V max, 0.6 V min
Schmitt trigger hysteresis
0.4 V min, 1.2 V max
Number of outputs
32 channels, shared with alarms
Configuration
Open drain output
Output characteristics
100 kΩ pull-up, open drain (DMOS transistor)
Pull-up configuration
All pins pulled up to +5 V via individual 100 kΩ resistors using slide switches Transfer rate (software-paced)
Digital output – 500 port writes per second typ.
Output voltage range
0 V to +5 V (internal 100 kΩ pull-up resistors connected to +5 V by default) Off state leakage current
0.1 µA
Sink current capability
100 mA max (contin uous) per output pin
DMOS transistor on-resistance
4
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Type
T
N
Temperature (°C)
0 0.908 0.415 0.949 0.437
Maximum (°C),
Typical (°C),
Maximum (°C),
Typical (°C),
Thermocouple measurement accuracy specifications include polynomial linearization, cold-junction compensation, and system noise. The accuracy specifications assume the device is operated within its enclosure and with the e nclosure in a horizontal, upright orientation. The board should also be warmed up for the recommended 20 minutes. If the maximum digital output load of 3.2 amps is applied, add an additional 0.30°C to the typical and maximum accuracy specifications listed above. Errors shown do not include inherent thermocouple error. Contact your thermocouple supplier for details on the actual thermocouple accuracy error.

Digital input/output

Table 5. Digital input specifications
Parameter Specification
SW5 default positions are on (pulled up.)
Table 6. Digital output specifications
Parameter Specification
SW1-SW4. The default positions for SW1-4 are on (pulled up.)
0 V to +15 V max (using external pull up resistor)
(drain to source)
Note 5: Ground pins labeled IGND are isolated from AGND and chassis ground.
20
TC-32 User's Guide Specifications
Number of alarms
32, shared with digital output
Each alarm controls it s as s ociated digital output lin e as an alarm output. When an
Alarm when input temperature >= T1, reset alarm when input temperature < T2
Note: T1 and T2 may be independently set for each alarm.
Alarm on temperature reading only
Alarm on open thermocouple or c om mon-mode voltage error only
Disabled, digital output line may be used for normal operation
user
Alarm latency (Note 6)
1 second, max
EEPROM
8,192 bytes
One high-performance 32-bit RISC microcontroller (communications)
330 mA typ, 610 mA max
TC-32-EXP connected)
+5 VDC ± 5% (+5 VDC power supply provided)
Power switch
Rocker type
External power supply (included)
MCC p/n PS-5V2AEPS
+5 VDC, 10 W, 5% regulation
4.0 V > V
ext
> 5.75 V
PWR LED = Off (power fault)
ext
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Temperature alarms

Table 7. Temperature alarm specifications
Parameter Specification
Alarm functionality
alarm is enabled, it s as sociated output line is dri ven to the appropriate state determined by the alarm options and input temperature. The alarm configurations are stored in non-volatile memory and loaded at power on.
Alarm input modes
Alarm error modes
Alarm output modes
Alarm when input temperature <= T1, reset alarm when input temperature > T2 Alarm when input temperature is < T1 or > T2
  Alarm on temperature reading, open thermocouple, or common-mode voltage
error
 
Enabled, active high output (output line goes high when alarm condition is met) Enabled, active low output (output line goes low when alarm condition is met) Alarm output may be latched and will not clear unless explicitly cleared by the
Note 6: Alarm settings are applied when changed and at power-on. Temperatures are constantly converted on
enabled channels and processed for alarm conditions regardless of the communications connectivity.

Memory

Table 8. Memory specifications
Parameter Specification

Microcontroller

Table 9. Microcontroller specifications
Parameter Specification
Type
One high-performance 32-bit RISC microcontroll er (measurement)

Power

Table 10. Power specifications
Parameter Conditions Specification
Supply current
External power input (Note 5)
External power input voltage supervisor limits
4.0 V < V
< 5.75 V PWR LED = On
21
550 mA typ, 1000 mA max (with
TC-32 User's Guide Specifications
Chassis ground connection
6-32 screw on rear of enclosure
Device type
USB 2.0 full speed
Device compatibility
USB 1.1, USB 2.0, USB 3.0
Cable length
5 meters max
Power
Self-powered (no USB current consumed)
100 Base-TX Communication rates
10/100 Mbps, auto-negotiated
Connector
RJ-45, 8 position
Cable length
100 meters max
Additional parameters
HP Auto-MDIX support
Protocols used
TCP/IP (IPv4 only), UDP
UDP:54211 (discovery) Network IP configuration
DHCP + link-local, DHCP, static, link-local
TC-32-xxxxxx, where xxxxxx are the lower 6 digits of the device MAC address
By NBNS (responds to b-node broadcasts, therefore only available on the local subnet)
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Parameter Conditions Specification
Note 7: Voltage specification applies at barrel plug power input. The power supply provided with the device
meets this specification at the rated total power supply current. If a different power supply is used, small line resistances could cause significant voltage drop between the power supply and the barrel plug input.
USB
Table 11. USB specifications
Parameter Specification
Connector Standard B

Network

Ethernet connection

Table 12. Ethernet connection specifi cations
Parameter Specification
Ethernet type
10 Base-T

Network interface

Table 13. Factory default specific atio ns
Parameter Specification
Network ports used
Network name
Network name publication
TCP:54211 (commands)
22
TC-32 User's Guide Specifications
Factory default IP address
192.168.0.101
Factory default subnet mask
255.255.255.0
Factory default gateway
192.168.0.1
Factory default DHCP setting
DHCP + link-local enabled
TCP sockets are n ot opened unless application s ends the correct PIN code (stored Number of concurrent sessions
1
Vulnerabilities
TCP Sequence Number Approximation Vulnerability
Indicates power on. Blinks when blink command is sent. Both the POWER and ACTIVITY LEDs blink in firmware upgrade mode.
On when there is a valid connection and blinks when a command is sent to the TC-32. Both the POWER and ACTIVITY LEDs blink in firmware upgrade mode.
ALARM
Indicates that an alarm condition is met.
OPEN TC LED (bottom)
Indicates that there is an open thermocouple condition.
When held for 3 seconds, the LEDs turn off for a short time, indicating a reset is in
Operating temperature range
0 °C to 45 °C
Storage temperature range
–40 °C to 85 °C
Dimensions (L × W × H)
482.6 × 128.6 × 43.18 mm (19 × 6.15 × 1.74 in.)
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Network factory default settings

Table 14. Factory default specific atio ns
Parameter Specification

Network security

Table 15. Factory default specific atio ns
Parameter Specification
Security implementation
in non-volatile memory, may be changed by user, default value 0000)

LED displays and the factory reset button

Table 16. LED and button configurations
Parameter Specification POWER LED (top)
ACTIVITY LED
LED
Factory reset button
process. When the LEDs turn back on, reset is complete and the factory-default network settings are restored.

Environment

Table 17. Environmental speci ficat ion s
Parameter Specification
Humidity 0 °C to 90% non-condensing

Mechanical

Table 18. Mechanical specific ation s
Parameter Specification
23
TC-32 User's Guide Specifications
User accessible I/O connectors (excluding USB and Ethernet)
Compatible cable for the 50-pin
C50FF-x
Compatible accessory products
CIO-MINI50
Compatible cables for the 40-pin expansion connector
C40FF-x
Pin
Signal Name
Pin Description
Pin
Signal Name
Pin Description
TC1(-)
CH1 sensor input (–)
TC17(-)
CH17 sensor input (–)
TC4(+)
CH4 sensor input (+)
TC20(+)
CH20 sensor input (+)
TC6(-)
CH6 sensor input (–)
TC22(-)
CH22 sensor input (–)
TC9(+)
CH9 sensor input (+)
TC25(+)
CH25 sensor input (+)
TC11(-)
CH11 sensor input (–)
TC27(-)
CH27 sensor input (–)
TC14(+)
CH14 sensor input (+)
TC30(+)
CH30 sensor input (+)
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Signal I/O connectors

Table 19. Connector specifications
Parameter Specification
Thermocouple inp ut s , digital I/O connector, expansion connector, chassis ground
Thermocouple co nne c tor t ype Thermocouple Mini-Jack (Omega PCC-SMP-V-U-100) Digital I/O connector type 50-pin IDC header
DIO connector
with the C50FF-x cable Expansion connector type 40-pin IDC header
Chassis ground connector 6-32 screw
SCB-50
Table 20. Thermocouple connector pin out
TC0(+) CH0 sensor input (+)
J1
TC0(-) CH0 sensor input (–) TC16(-) CH16 sensor input (–) TC1(+) CH1 sensor input (+)
J2
TC2(+) CH2 sensor input (+)
J3
TC2(-) CH2 sensor input (–) TC18(-) CH18 sensor input (–) TC3(+) CH3 sensor input (+)
J4
TC3(-) CH3 sensor input (–) TC19(-) CH19 sensor input (–)
J5
TC4(-) CH4 sensor input (–) TC20(-) CH20 sensor input (–) TC5(+) CH5 sensor input (+)
J6
TC5(-) CH5 sensor input (–) TC21(-) CH21 sensor input (–) TC6(+) CH6 sensor input (+)
J7
TC7(+) CH7 sensor input (+)
J8
TC7(-) CH7 sensor input (–) TC23(-) CH23 sensor input (–) TC8(+) CH8 sensor input (+)
J9
TC8(-) CH8 sensor input (–) TC24(-) CH24 sensor input (–)
J10
TC9(-) CH9 sensor input (–) TC25(-) CH25 sensor input (–) TC10(+) CH10 sensor input (+)
J11
TC10(-) CH10 sensor input (–) TC26(-) CH26 sensor input (–) TC11(+) CH11 sensor input (+)
J12
J17
J18
J19
J20
J21
J22
J23
J24
J25
J26
J27
J28
TC16(+) CH16 sensor input (+)
TC17(+) CH17 sensor input (+)
TC18(+) CH18 sensor input (+)
TC19(+) CH19 sensor input (+)
TC21(+) CH21 sensor input (+)
TC22(+) CH22 sensor input (+)
TC23(+) CH23 sensor input (+)
TC24(+) CH24 sensor input (+)
TC26(+) CH26 sensor input (+)
TC27(+) CH27 sensor input (+)
TC12(+) CH12 sensor input (+)
J13
TC12(-) CH12 sensor input (–) TC28(-) CH28 sensor input (–) TC13(+) CH13 sensor input (+)
J14
TC13(-) CH13 sensor input (–) TC29(-) CH29 sensor input (–)
J15
TC14(-) CH14 sensor input (–) TC30(-) CH30 sensor input (–) TC15(+) CH15 sensor input (+)
J16
TC15(-) CH15 sensor input (–) TC31(-) CH31 sensor input (–)
J29
J30
J31
J32
TC28(+) CH28 sensor input (+)
TC29(+) CH29 sensor input (+)
TC31(+) CH31 sensor input (+)
24
TC-32 User's Guide Specifications
Pin
Signal Name
Pin Description
Pin
Signal Name
Pin Description
1
DOUT0
Digital Output 0/ Alarm Output 0
2
DOUT1
Digital Output 1/ Alarm Output 1
3
DOUT2
Digital Output 2/ Alarm Output 2
4
DOUT3
Digital Output 3/ Alarm Output 3
7
DOUT6
Digital Output 6/ Alarm Output 6
8
DOUT7
Digital Output 7/ Alarm Output 7
9
DOUT8
Digital Output 8/ Alarm Output 8
10
DOUT9
Digital Output 9/ Alarm Output 9
11
DOUT10
Digital Output 10/ Alarm Output 10
12
DOUT11
Digital Output 11/ Alarm Output 11
13
DOUT12
Digital Output 12/ Alarm Output 12
14
DOUT13
Digital Output 13/ Alarm Output 13
17
IGND
Isolated Digital GND
18
IGND
Isolated Digital GND
19
IGND
Isolated Digital GND
20
IGND
Isolated Digital GND
21
DOUT16
Digital Output 16/ Alarm Output 16
22
DOUT17
Digital Output 17 / Alarm Output 17
23
DOUT18
Digital Output 18/ Alarm Output 18
24
DOUT19
Digital Output 19/ Alarm Output 19
27
DOUT22
Digital Output 22/ Alarm Output 22
28
DOUT23
Digital Output 23/ Alarm Output 23
29
DOUT24
Digital Output 24/ Alarm Output 24
30
DOUT25
Digital Output 25 / Alarm Output 25
31
DOUT26
Digital Output 26/ Alarm Output 26
32
DOUT27
Digital Output 27/ Alarm Output 27
33
DOUT28
Digital Output 28/ Alarm Output 28
34
DOUT29
Digital Output 29/ Alarm Output 29
37
IGND
Isolated Digital GND
38
IGND
Isolated Digital GND
39
IGND
Isolated Digital GND
40
IGND
Isolated Digital GND
41
DIN0
Digital Input 0
42
DIN1
Digital Input 1
43
DIN2
Digital Input 2
44
DIN3
Digital Input 3
47
DIN6
Digital Input 6
48
DIN7
Digital Input 7
49
IGND
Isolated Digital GND
50
IGND
Isolated Digital GND
Pin
Signal Name
Pin Description
Pin
Signal Name
Pin Description
1
+12VA (Note)
+12 VA power output
2
AGND
Isolated Analog GND
3
+12VA
+12 VA power output
4
AGND
Isolated Analog GND
5
+5VA
+5 VA power output
6
AGND
Isolated Analog GND
9
+5VA
+5 VA power output
10
AGND
Isolated Analog GND
13
+3.3VA
+3.3 VA power output
14
AGND
Isolated Analog GND
17
+3.3VA
+3.3 VA power output
18
AGND
Isolated Analog GND
21
CS
Chip select
22
AGND
Isolated Analog GND
23
SCK
Serial clock
24
AGND
Isolated Analog GND
25
MOSI
Master output data
26
AGND
Isolated Analog GND
MISO
AGND
29
IRQ
Interrupt request
30
AGND
Isolated Analog GND
31
RSVD
Reserved
32
AGND
Isolated Analog GND
RSVD
AGND
35
RSVD
Reserved
36
AGND
Isolated Analog GND
37
RSVD
Reserved
38
AGND
Isolated Analog GND
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Table 21. Digital I/O connector (J33) pinout
5 DOUT4 Digital Output 4/ Alarm Output 4 6 DOUT5 Digital Output 5/ Alarm Output 5
15 DOUT14 Digital Output 14/ Alarm Output 14 16 DOUT15 Digital Output 15/ Alarm Output 15
25
DOUT20
35 DOUT30 Digital Output 30/ Alarm Output 30 36 DOUT31 Digital Output 31/ Alarm Output 31
45 DIN4 Digital Input 4 46 DIN5 Digital Input 5
Digital Output 20/ Alarm Output 20 26
DOUT21
Digital Output 21/ Alarm Output 21
Table 22. Expansion connecto r (J34) pinout
7 +5VA +5 VA power output 8 AGND Isolated Analog GND
11 +5VA +5 VA power output 12 AGND Isolated Analog GND
15
+3.3VA
+3.3 VA power output 16
Note 8
AGND
Isolated Analog GND
19
27
33
39
+3.3VA
EXP_DETECT
+3.3 VA power output 20
Master input data 28
Reserved 34
EXP detection 40
AGND
AGND
Isolated Analog GND
Isolated Analog GND
Isolated Analog GND
Isolated Analog GND
Note 8: Power supplies (+12 VA, +5 VA, 3.3 VA) located at connector J34 are intended for use with the
TC-32-EXP expansion device only.
25
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Declaration of Conformity

According to ISO/IEC 17050-1:2010
Manufacturer: Measurement Computing Corporation Address: 10 Commerce Way Suite 1008 Norton, MA 02766 USA Product Category: Electrical equipment for measurement, control and laboratory use. Date and Place of Issue: October 15, 2015, Norton, Massachusetts USA Test Report Number: EMI6774.15
Measurement Computing Corporation declares under sole responsibility that the product(s)
TC-32
Complies with the essential requirements of the following applica ble European Directives:
Electromagnetic Compatibility ( EMC) Directive 2004/108/EC Low Voltage Directive 2006/9 5/EC RoHS Directive 2011/65/EU
Conformity is assessed in accordance to the following standards: EMC:
Emissions:
EN 61326-1:2013 (IEC 61326-1:2012), Class A EN 55011: 2009 + A1:2010 (IEC CISPR 11:2009 + A1:2010), Group 1, Class A
Immunity:
EN 61326-1:2013 (IEC 61326-1:2012), Controlled EM Environments EN 61000-4-2:2008 (IEC 61000-4-2:2008) EN 61000-4-3 :2010 (IEC61000-4-3:2010) EN 61000-4-4 :2012 (IEC61000-4-4:2012) EN 61000-4-5 :2005 (IEC61000-4-5:2005) EN 61000-4-6 :2013 (IEC61000-4-6:2013) EN 61000-4-11:2004 (IEC61000-4-11:2004)
Safety:
EN 61010-1 (IEC 61010-1)
Environmental Affairs:
Articles manufactured on or after the Date of Issue of this Declaration of Conformity do not contain any of the restricted substances in concentr ations/applications not permitted by the RoHS Directive.
Carl Haapaoja, Director of Quality Assurance
Measurement Computing Corporation
www.mccdaq.com
NI Hungary Kft
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10 Commerce Way Norton, Massachusetts 02766 (508) 946-5100 Fax: (508) 946-9500 E-mail:
info@mccdaq.com
H-4031 Debrecen, Hátar út 1/A, Hungary
Phone: +36 (52) 515400
Fax: +36 (52) 515414
http://hungary.ni.com/debrecen
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