RTP 3108 User manual

Technical Manual
3108 & 3118
8-Channel
High Level Analog Input
Card

2
© 2002 - 2019 RTP Corporation
Specifications, information and graphics are subject to change without notice. Contact
RTP’s corporate office for specifics regarding any changes.
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RTP Corporation
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Phone: [phone]
Internet: http://www.rtpcorp.com
Last Updated: 9/12/2019

3
TABLE OF CONTENTS
INTRODUCTION........................................................................................4
SPECIFICATIONS.....................................................................................5
FAILURE RATES IN ACCORDANCE TO IEC 61508 ...............................8
CABLING .........................................................................................9
REDUNDANT I/O CARDS PLACEMENT................................................15
3000 Series System with I/O Cards..............................................................15
3100 Series System with I/O Cards..............................................................15
3200 Series System with I/O Cards..............................................................15
SOFTWARE CONFIGURATION .............................................................15
PLD Upgrade...............................................................................................15
NetArrays Configuration...............................................................................17
Float Cal High Input ...............................................................................18
Float Cal Low Input................................................................................18
Float Board Temp ..................................................................................18
Integer Card Revision.............................................................................18
Integer Cal Date.....................................................................................18
Integer Cal Serial Number......................................................................18
Integer Error Detection...........................................................................18
Integer Channel Error Status..................................................................19
Channel .................................................................................................20
I/O Tag...................................................................................................20
Filter.......................................................................................................20
Threshold...............................................................................................20
SOE Low................................................................................................20
SOE High...............................................................................................21
Guard Band Low....................................................................................21
Guard Band High ...................................................................................21
Comment...............................................................................................21
COMPLIANCE WITH CE MARK .............................................................22
ENVIRONMENTAL CONDITIONS ..........................................................24
REFERENCED COMPANIES..................................................................25
DEFINITIONS .......................................................................................25

4
Introduction
The 3108 and 3118 8-Channel High-Level Analog Input Cards provide high accuracy analog
measurements. Sampling transformers provide channel-to-RTP System and channel-to-channel
isolation. Very high noise immunity is characteristic of the transformer multiplexer, achieving in
excess of -140 dB of common mode rejection. Immunity to noise is further enhanced with a
double-pole low pass filter.
Analog to digital conversion is performed by a 16-bit switched capacitor successive
approximation A/D converter. Two precision voltage sources provide self-test function for the
card’s amplifiers and A/D converter and can be used to verify accuracy in user application logic.
The card also includes an onboard temperature sensor, which automatically compensates the
analog measurement for higher accuracy. This analog input card also has an internal 12-bit
DAC, which ramps periodically and verifies the operation of the ADC. No field adjustments are
necessary after the initial factory setup.
I/O bus checking diagnostics, card address tests, and configuration tests are performed each
time the controller accesses the card. All data and control transfers are performed twice, once
using the actual data and then using the inverted data. Both versions of the data are compared
to verify that all I/O bus data bits are functioning properly. The configuration code from the card is
compared to the I/O configuration to check that the correct card is installed in the rack. I/O Bus
slot address and control signal contention tests also are performed. Any fault detected sets
status bits in an error detection variable returned to the user application program.
An indicator LED, located near the top of the front panel, indicates the overall health status of the
card. If this LED is on, the card is functioning normally; if it is off, the card is offline. If this LED is

5
on, but the card is shown in red on the NetArrays IOC screen and cannot be enabled, this
indicates an error in the cards calibration data.
For long term accuracy, the calibration channels should be monitored to the desired accuracy
tolerance.
In order to measure current, the 3099/11 Termination Module contains eight (8) 0.01% precision
250 resistors that convert the input currents to voltages for measurement by the card. The
3099/11 termination module can also distribute +24 VDC fused power through a resettable fuse,
per channel, rated at 300 mA, 30 Volts max, to current mode sensors.
Another current measurement option, the S3099/11-001 Termination Module contains eight (8)
0.01% precision 100 resistors that convert the input currents to voltages for measurement by
the card. The S3099/11 Termination Module can also distribute +80 VDC fused power through a
replaceable fuse rated at 2.5 amps, 80 Volts max, to current mode sensors. Each channel on the
S3099/11-001 has a 125 mA replaceable fuse.
The 3108 and 3118 cards can be used with user supplied field termination. The card can be
connected to the field termination by using RTP supplied flying lead termination cable or user
supplied field wiring/cabling.
Specifications
Module Safety Integrity Level: 3108: SIL-2 (SIL-3 in redundant configuration)
when used with RTP termination assembly and RTP
termination cable
3118: Non-interfering
Card Address: Determined by the slot of the controller backplane
Number of channels: 8
Isolation: Channel to RTP System and Channel to Channel
600 VAC RMS or 400 VDC
Type of protection: Transformer isolation
Input Signal Ranges: ±10 VDC
Maximum permanent allowed
overload (no damage): ±12.5 Volts for 3099/31
±30 mA for 3099/11
±100 mA for S3099/11
Reading out of guard band: Reported in error status word.
Common Mode Voltage: 600 VAC RMS or 400 VDC continuous
Common Mode Rejection: –140 dB at 60 Hz
Common Mode Crosstalk: –150 dB at 60 Hz
Crosstalk between Channels: -84 dB DC/AC at 50 Hz
Common Points between Channels: None
Normal Mode Rejection: 3108: 0 dB at 60 Hz
3118: -70 dB at 60 Hz
Conversion method: Successive approximation

6
Guard Bands: Set with card properties
Sample Repetition Rate: 3108:1 milliseconds (1000 scans per second)
3118: 23 milliseconds (43 scans per second)
Sample Duration & Settling Time: 17.7 microseconds
Input Filter characterization:
Order: 3108: Second Order
Transition: -6 dB at 2.5 kHz
Order: 3118: Second Order
Transition: -6 dB at 0.5 Hz
Multiplexer Type: Solid state switches with individual transformers for complete
channel-to-channel isolation
Full Scale Value: Voltage: 10 V
Current: 20 mA for 3099/11
Current: 50 mA for S3099/11
Analog input error:
Voltage Mode:
Maximum error at 25 °C: ±0.070% of Full Scale Value (±7 mV)
Temperature Coefficient: ±0.0012% of Full Scale Value/ºC (±120 µV/ºC)
Maximum error (0 to 55 °C): ±0.106% of Full Scale Value (±10.6 mV)
Current Mode (3099/11):
Maximum error at 25 °C: ±0.076% of Full Scale Value (±15.2 µA)
Temperature Coefficient: ±0.0032% of Full Scale Value /ºC (±0.6 µA/ºC)
Maximum error (0 to 55 °C): ±0.172% of Full Scale value (±34.4 µA)
Current Mode (S3099/11):
Maximum error at 25 °C: ±0.078% of Full Scale Value (±39.1 µA)
Temperature Coefficient: ±0.0016% of Full Scale Value /ºC (±0.8 µA/ºC)
Maximum error (13 to 50 °C):±0.118% of Full Scale value (±55.6 µA)
Non-Linearity: ±0.025% of Full Scale Value
Repeatability: ±0.025% of Full Scale Value at fixed temperature
Monotonicity with no missing codes: Yes
Note: To insure the stated Analog I/O specifications, you need five
minutes of warm-up time in a stable temperature
environment. In addition, the inputs may not meet the full-
scale accuracy specification at the upper and lower ends of
the extended operating range:
•-20 to 0 °C (-4 to 32 °F)
•55 to 60 °C (131 to 140 °F)
Resolution: 16 Bits
Value of LSB: 336.25 µV
Input Impedance:
Voltage Mode: Greater than 850 k
Current Mode: 250 
Input Bias Current: 4.0 μA maximum @ 1000 samples per second
Input Source Impedance: 1 kmaximum including cables (100 to maintain stated
accuracy)

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External Power to Termination:
3099/11-X00: 24 VDC nominal
Note: The external Power Supply to the Termination Module must be fuse
protected not to exceed 30 A.
Power Requirements: +5 VDC @ 500 mA
+24 VDC @ 150 mA
Termination Module Connectors: One D-Sub connector, 37 pins for use with the 3057/00
Analog Cables. These cables have a diameter of 0.5 inches
(1.27 centimeters) with a minimum bend radius of 4.6 inches
(11.69 centimeters).
Field Wiring Mating Connector: AMP (Tyco) 205209-2 37- Pin D-Sub Connector, Female
Termination Module: All Termination Modules are 4.38 inches (11.1 centimeters)
in height and require a minimum depth of 3.75 inches (9.5
centimeters). The width for each termination module and the
compatible field wiring size is tabulated as following:
Model #
Description
Width
(")
Width
(cm)
Minimum
AWG
Maximum
AWG
3099/11-000
SIL-3 Triple Termination Module - 8 channel
current input, supplies power from resettable
fuses
5.00
12.7
30
12
3099/11-100
SIL-2 Single Termination Module - 8 channel
current input, supplies power from resettable
fuses
3.00
7.6
30
12
3099/31-000
SIL-3 Triple Termination Module - 8 channel
voltage input
4.37
11.1
30
12
3099/31-100
SIL-2 Single Termination Module - 8 channel
voltage input
2.27
5.8
30
12
S3099/11-001
Dual Termination Module –8 channel current
input, supplies power from replaceable fuses
5.75
14.6
30
12
Module dimension values are ± 0.05 inches or ± 0.127 centimeters!
Effect of Incorrect Field Wiring: Shorted connections produce zero analog input reading.
Open connections produce incorrect analog input reading in
voltage mode. In current mode, shorted connections will
produce zero analog input, which can be annunciated as
out-of-range in 4-20 mA configurations. Reverse
connections produce (sign) inverted analog input readings in
voltage mode. In current mode, reverse connections will
produce negative analog input reading, which can be
annunciated as out-of-range in the error status word.

8
Failure Rates in Accordance to IEC 61508
The following table summarizes the failure rates of the modules, which were calculated from
Failure Mode and Diagnostic Effects in accordance to standard IEC 61508. The information can
be used in calculating probability of dangerous failures using Reliability Block Modeling or Markov
Modeling. Such modeling should consider redundant 3108 analog input modules in a 1oo2, 2oo3
or 3oo4 configuration. Rates only applicable for 3108 only. 3118 is not safety-rated.
Safe Failure Fraction:
99.31%
Diagnostic Coverage:
98.88%
Failure Rates In Common Circuitry:
Safe Detected
2.5890E-07
Safe Undetected
4.6152E-09
Dangerous Detected
4.2702E-07
Dangerous Undetected
2.4371E-09
Don't Care
2.9158E-07
Failure Rates In Per Channel Circuitry:
Safe Detected
1.4731E-08
Safe Undetected
4.1488E-09
Dangerous Detected
1.9403E-08
Dangerous Undetected
2.5975E-09
Don't Care
1.8720E-08
Average Frequency of a Dangerous Failure per Hour (1oo1D):
5.0346E-09
Average Frequency of a Dangerous Failure per Hour (1oo2D):
1.4557E-10
Average Frequency of a Dangerous Failure per Hour (2oo3D):
6.6370E-11
Mean Time to Restoration for 1oo2D (SIL-3) configurations:
≤ 9 days
Mean Time to Restoration for all other configurations:
No
restriction
In dual redundant configurations, the users must exchange the card within Mean Time to Restore
(MTTR ≤ 9 days) in order to remain within SIL 3 requirements. Otherwise the card will continue
to operate in degraded SIL 2 mode.

9
Cabling
Adhere to the specified insulation strip length of 0.26 inches (6.5 mm) when you connect field
wiring to the terminal modules; excessive insulation strip lengths causes an electrical hazard. Do
not exceed the specified torque when you secure the wires into the terminal module; maximum
torque is 2.2 inch-pounds (0.25 N-m).
When not using an RTP termination module, input signals may be connected to the 8 channel
analog input card with user fabricated cable or RTP manufactured 3057/FL Flying Lead Analog
cable. 3057/FL cables have a diameter of 0.5 inches (1.27 centimeters) with a minimum bend
radius of 4.6 inches (11.69 centimeters).
Standard length for 3057/00 and 3057/FL cable is 5 feet.
You must disable (offline) an I/O card before you can hot-swap it. After you replace an I/O card,
you must enable it to return it to operation. While NetArrays is operating in Debug mode, use the
I/O Configuration Form to disable or enable I/O cards. To hot swap an I/O card, first display the
card’s icon in the I/O Configuration Form. If the I/O card’s icon is red, you can remove it. If the
I/O card’s icon is yellow or green, select the icon and disable it before you remove the card. After
you replace the I/O card, select the card’s icon and re-enable it. The color of the icon changes to
yellow or green to indicate the card is online.
WARNING! Dangerous high voltages may be present at the cards’ terminal blocks
during normal operation. When you service these cards, avoid contact with exposed
voltages on the card while you connect the field cabling. The field cabling terminal block
connectors also may have high voltages when disconnected from the card.
Warning! Never remove the card from the chassis with the termination cables
connected and the field power applied. Always disconnect the field power and cables
before removing the card from the chassis. Always insert the card into the chassis with
the cables and field power disconnected.

10
Figure 1: Field connections on the 3099/31-X00 Termination Module shown with voltage
analog input example.
Pin
Signal
1 Top
CH 0+
1 Middle
CH 0-
1 Bottom
CH 0 (S)
2 Top
CH 1+
2 Middle
CH 1-
2 Bottom
CH 1 (S)
3 Top
CH 2+
3 Middle
CH 2-
3 Bottom
CH 2 (S)
4 Top
CH 3+
4 Middle
CH 3-
4 Bottom
CH 3 (S)
5 Top
CH 4+
5 Middle
CH 4-
5 Bottom
CH 4 (S)
6 Top
CH 5+
6 Middle
CH 5-
6 Bottom
CH 5 (S)
7 Top
CH 6+
7 Middle
CH 6-
7 Bottom
CH 6 (S)
8 Top
CH 7+
8 Middle
CH 7-
8 Bottom
CH 7 (S)
All Other Pins
No Connection
-
VS
+
-

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Pin
Signal
1 Top
VOUT 0
1 Middle
CH 0
1 Bottom
CH 0 (S)
2 Top
VOUT 1
2 Middle
CH 1
2 Bottom
CH 1 (S)
3 Top
VOUT 2
3 Middle
CH 2
3 Bottom
CH 2 (S)
4 Top
VOUT 3
4 Middle
CH 3
4 Bottom
CH 3 (S)
5 Top
VOUT 4
5 Middle
CH 4
5 Bottom
CH 4 (S)
6 Top
VOUT 5
6 Middle
CH 5
6 Bottom
CH 5 (S)
7 Top
VOUT 6
7 Middle
CH 6
7 Bottom
CH 6 (S)
8 Top
VOUT 7
8 Middle
CH 7
8 Bottom
CH 7 (S)
9 Top
Field Power+
9 Middle
No Connection
9 Bottom
Field Power-
Figure 2: Field connections on the 3099/11-X00 or S3099/11-001 Termination Module
shown with current analog input example.
-
IS
+
-
VS
-
+
24 VDC 3099/11
80 VDC S3099/11
For Field Devices that provide Current
Analog Inputs and are 24 VDC powered from
RTP system as following:
IS
-
+
For Field Devices that provide Current
Analog Inputs and are self-powered
independently from RTP system.
PS
-
+

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USER INTERFACE CONNECTION
3057/FL
WIRE
GROUP
WIRE
COLOR
37-PIN
CONNECTOR
PIN
SIGNAL
Group 1
SHIELD
36
CH 0(S)
RED
17
CH 0+
BLACK
35
CH 0-
Group 2
SHIELD
16
CH 1(S)
RED
34
CH 1+
BLACK
15
CH 1-
Group 3
SHIELD
33
CH 2(S)
RED
14
CH 2+
BLACK
32
CH 2-
Group 4
SHIELD
13
CH 3(S)
RED
31
CH 3+
BLACK
12
CH 3-
Group 5
SHIELD
30
CH 4(S)
RED
11
CH 4+
BLACK
29
CH 4-
Group 6
SHIELD
10
CH 5(S)
RED
28
CH 5+
BLACK
9
CH 5-
Group 7
SHIELD
27
CH 6(S)
RED
8
CH 6+
BLACK
26
CH 6-
Group 8
SHIELD
7
CH 7(S)
RED
25
CH 7+
BLACK
6
CH 7-
Cable
White
1
Cable Detect
Detect
White
19
Cable Detect
Figure 3: User Interface Connections for 3108 or 3118 Card with 3057/FL cable.
NOTE: Cable detect is activated by connecting Pin 1 to Pin 19.

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User Interface Connections
Pin
Signal
1
Cable Detect
2
Not Used
3
Not Used
4
Not Used
5
Not Used
6
CH 7-
7
CH 7 (S)
8
CH 6+
9
CH 5-
10
CH 5(S)
11
CH 4+
12
CH 3-
13
CH 3 (S)
14
CH 2+
15
CH 1-
16
CH 1(S)
17
CH 0+
18
Not Used
19
Cable Detect
20
Not Used
21
Not Used
22
Not Used
23
Not Used
24
Not Used
25
CH 7+
26
CH 6-
27
CH 6(S)
28
CH 5+
29
CH 4-
30
CH 4(S)
31
CH 3+
32
CH 2-
33
CH 2(S)
34
CH 1+
35
CH 0-
36
CH 0(S)
37
Not Used
Figure 4: User Interface Connections for the 3108 or 3118 Card with user fabricated cable
and voltage analog input.
NOTE: Cable detect is activated by connecting Pin 1 to Pin 19.
VS
+
-

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User Interface Connections
Pin
Signal
1
Cable Detect
2
Not Used
3
Not Used
4
Not Used
5
Not Used
6
CH 7-
7
CH 7 (S)
8
CH 6+
9
CH 5-
10
CH 5(S)
11
CH 4+
12
CH 3-
13
CH 3 (S)
14
CH 2+
15
CH 1-
16
CH 1(S)
17
CH 0+
18
Not Used
19
Cable Detect
20
Not Used
21
Not Used
22
Not Used
23
Not Used
24
Not Used
25
CH 7+
26
CH 6-
27
CH 6(S)
28
CH 5+
29
CH 4-
30
CH 4(S)
31
CH 3+
32
CH 2-
33
CH 2(S)
34
CH 1+
35
CH 0-
36
CH 0(S)
37
Not Used
Figure 5: User Interface Connections for the 3108 or 3118 Card with user fabricated cable
and current analog input.
NOTE: Cable detect is activated by connecting Pin 1 to Pin 19.
IS
PS
+
-
250 Ω
I to V
Resistor

15
Redundant I/O Cards Placement
3000 Series System with I/O Cards
Redundant I/O cards may be located in any chassis; there are no restrictions.
3100 Series System with I/O Cards
Redundant Input Cards in non-safety 3100 systems have no restrictions.
3200 Series System with I/O Cards
Redundant I/O cards may be located in any chassis; there are no restrictions.
Software Configuration
PLD Upgrade
To update card’s PLD firmware follow this procedure:
1. Turn the power ON at all chassis within the target node.
2. From Windows StartPrograms menu, launch the RTP Netsuite/RTPNC utility.
3. Select the Node with the I/O cards to be updated.
4. Select FILE/Download File and navigate to the Program pldprog.pgm. Use the FILE
TYPE/pgm option. CLICK/OPEN button to initiate downloading the file. When prompted
for PASSWORD enter “rtp” (or the correct node password).
5. Select FILE/Download File and Select CID_0094.PLD (for 3108) or CID_0132.PLD
(for 3118).Use the FILE TYPE/pld option. CLICK/OPEN button to initiate downloading
the file. When prompted for PASSWORD enter “rtp” (or the correct node password).
6. In RTP NetArrays Select Status for the Node, and observe that the pldprog.pgm file
and the CID_0094.PLD (for 3108) or CID_0132.PLD (for 3118) file were received as
shown in Status Window 1.
7. Turn the power OFF and then back ON at all chassis within the target node.
8. The program pldprog.pgm downloaded will start and automatically update all of the
applicable cards’ PLDs. All non-distributed I/O cards should have their status LEDs ON.
9. In NetArrays Select Status for the Node, observe that the update has started as shown
in Status Window 1.
10. The Status Window will show all cards marked to be updated. Ensure that all applicable
cards in the Node are identified for updating.
11. Depending on the speed of the node, it will take several minutes for the process to
complete. When finished, the Status Window will show as shown in Status Window 2.
12. The cards being updated are processed at different times. Ensure that all cards identified
for updating have been processed before proceeding.
13. It is possible that cards of a type not being updated will report an error. This is of no
concern.
14. After the PLD update process is complete, all applicable cards in the Node will have their
PLDs updated.

16
15. Turn the power OFF and then back ON at all chassis within the target node. After the
power cycle, the 2 files downloaded will automatically be deleted, and the normal node
program will be active. The cards’ Integer Card Revision variables will show the revision
of the PLD downloaded.
Status Window 1
Status Window 2

17
NetArrays Configuration
The 3108 and 3118 High-Level Analog Input cards provide eight differential analog input points.
The channel input data can be accessed as a floating-point voltage value (Float Variable). Filter
parameters are provided for signal conditioning of the channel inputs.
The Chassis Processor monitors each channel’s input and creates a Sequence-of-Events record
if the input goes above or below the trip points configured for the channel. The SOE records,
which contain the Tag of the input, its new value, and a time stamp, are stored in an SOE
Archival file by the RTPADA utility. When utilizing the SOE functionality, the maximum signal
frequency is 500 Hz. Refer to the RTPADA Alarm and Data Archive System documentation for
more information. The RTP3000M and RTP3100M do not provide SOE.
This card provides input signal ranges of 10 V. In order to measure current, the 3099/11
Termination Modules contain eight 0.01% precision 250 resistors that convert the input
currents to voltages for measurement by the card. For example, a 4 to 20 mA input range will be
displayed in NetArrays as 1 to 5 volts. Calibration inputs are available for A/D converter testing.
NetArrays also returns an error detection status word for the card.
Card Properties
NOTE: Card properties for the 3108 and 3118 cards are the same.

18
Float Cal High Input
The Cal High Input is a floating-point voltage equal to 4.5 volts (±45 mV). It is derived from a
fixed calibration voltage source on the card. This input can be used to test the card’s calibration
and performance. NetArrays assigns a Tag to this input when the card is added to the I/O
configuration. Reassign this Tag as required to access this calibration voltage in the project
program.
Float Cal Low Input
The Cal Low Input is a floating-point voltage equal to 0.0 volts (±30 mV). This input can be used
to test the card’s calibration and performance. NetArrays assigns a Tag to this input when the
card is added to the I/O configuration. Reassign this Tag as required to access this calibration
voltage in the project program.
Float Board Temp
The Board Temp is a floating-point value, which equals to the operating temperature in Degrees
Celsius as measured by an on-board sensor. User applications can implement customized limits
for alarms and annunciations by examining the value of this variable. NetArrays assigns a default
Tag to this variable when the card is added to the I/O configuration. Reassign this Tag as
required to access this board temperature in the project program.
Integer Card Revision
The card revision is an integer value, which equals to the revision number of the PLD code.
NetArrays assigns a default Tag to this variable when the card is added to the I/O configuration.
Reassign this Tag as required to access this card revision in the project program.
Integer Cal Date
This is an encoded date when the card was calibrated in the format YYDDD where YY is
the last 2 digits of the year and DDD is the day within the year.
Integer Cal Serial Number
This is a serial number recorded when the card was calibrated.
Integer Error Detection
A Card Timeout Error (Bit 0) will set the Error Latch bit (Bit14), which will remain set until this bit is
cleared to zero by an operator. While the Error Latch is set, the card will be offline and the target
node will not attempt to communicate with it.
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
ERR
LTCH
DATA
ERR
DATA
INV
CARD
ID
CARD
ERR
CBL
ERR
LOOP
ERR
CAL
HIGH
CAL
LOW
CH
FAIL
TIME
OUT
Bit 14 Card Error Latch
This status bit indicates that a Card Timeout Error occurred on the I/O card, and that it
has been taken offline. The card will not be initialized or placed online until this bit is
cleared in the project program or operator intervention.
If this bit is set, it must be cleared to return the card to operation. The correct way to
clear this bit is to select the card’s icon in the I/O configuration Form while NetArrays is
operating in Debug mode and answer “Yes” to the Enable prompt. See I/O Card Status
and Control. (It is also possible to change the value of this variable by forcing an Integer
Bit Variable object, with Bit 14 selected in the object's properties, to zero. Do not clear
the entire Error Detection Integer Variable to zero.)

19
Bit 9 Backplane Bus Data Error
This status bit indicates that a data error was detected in a data or command transfer to
or from an I/O card.
Bit 8 Data Invalid
This status bit indicates that the I/O card is not ready to send valid data.
Bit 7 Card ID Does Not Match I/O Configuration
This bit indicates that the ID code read from the I/O card does not match the card type
specified in the NetArrays I/O configuration.
Bit 6 Card Error
This bit indicates a PLD error..
Bit 5 Cable Detect Error
This bit indicates that one or more of the cables are not connected to the I/O card or
between the I/O card and the termination block.
Bit 4 Loopback Error
This bit indicates that the card has failed a loopback test. The instrumented output from a
variable reference voltage on the card does not equal the expected output –output and
readback mismatch. *3108 only. Not applicable on model 3118.
Bit 3 Cal High
This bit indicates that calibrated voltage sources Float Cal High 00 or Float Cal High 01
are outside tolerance.
Bit 2 Cal Low
This bit indicates that ground voltages Float Cal Low 00 or Float Cal Low 01 are outside
tolerance.
Bit 1 Channel Failure
This bit indicates that the card has a failure on one or more of its channels. Examine the
channel specific error status word to isolate the failed channel(s). *Only guard band
errors on model 3118.
Bit 0 Card Timeout Error
This bit indicates that there was no response from the I/O card. The card is not returning
a ready test signal, is offline, or has been removed from the chassis. This bit sets the
Card Error Latch (Bit 14).
Integer Channel Error Status
The Channel Error Status is an Int Variable that can be used to detect out-of-range errors on
each channel. NetArrays assigns a Tag to each channel when the card is added to the I/O
configuration. Reconfigure the I/O Tag as required to match the Module Form Variable object
that is used to monitor out-of-range inputs.
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Ch 7
Fault
Ch 6
Fault
Ch 5
Fault
Ch 4
Fault
Ch 3
Fault
Ch 2
Fault
Ch 1
Fault
Ch 0
Fault

20
I/O Channel Properties
Channel
Each channel may be configured as a Float input or Disabled. If "Float" is selected, the channel
returns a floating-point voltage.
If "Disabled" is selected, the channel is disabled. You can disable any unused channel to avoid
scanning unconnected inputs.
If “Integer” is selected, the channel is “Disabled”.
I/O Tag
Each Float input channel is accessed by a Float Variable object. NetArrays assigns a Tag to
each channel when the card is added to the I/O configuration. Reconfigure the I/O Tag as
required to match the Module Form Variable object that is used to access the channel input.
Note! All unused un-terminated I/O points must be disabled in IO Configuration.
Filter
If required, a triple-cascaded recursive filter is available for each channel. A filter weight must be
assigned to enable the filter for the channel. Enter a weight factor of 10 through 2000. The
filtering effect increases as the weight value increases. The filtering for each cascade can be
expressed as:
Where: Xn is the input to the filter
Yn is the output from the filter
Yn-1 is a weighted portion of the previous output
Selecting a filter parameter of “None” disables recursive filtering of the channel’s input.
Threshold
If the threshold value is exceeded, the filter will reset to the new input value. The units are in mV
if the inputs are configured in Float.
SOE Low
The SOE Low parameter specifies the low SOE trip point for the channel’s input. If the input falls
below this value, an SOE event record is stored in a special buffer within the Chassis Processor.
These records may then be logged by the RTPADA utility in an archival file. If both the SOE Low
and SOE High parameters are set to 0.0, SOE processing is disabled for the channel. The
RTP3000M and RTP3100M do not provide SOE.