Super Systems A20831-CO2 User manual

Single Gas
Sensor Module
CO, CO2, or CH4measurement
OPERATIONS MANUAL
Super Systems Inc.
7205 Edington Drive
Cincinnati, OH 45249
513-772-0060
Fax: [phone]
www.supersystems.com

Super Systems Inc.
Page 2 of 30
Super Systems Inc.
USA Office
Corporate Headquarters:
7205 Edington Drive
Shipping Address:
7245 Edington Drive
Cincinnati, OH 45249
Phone: [phone]
http://www.supersystems.com
Super Systems Europe
Unit E, Tyburn Trading Estate,
Ashold Farm Road, Birmingham
B24 9QG
UNITED KINGDOM
Phone: [phone]
http://www.supersystemseurope.com
Super Systems México
Sistemas Superiores Integrales S de RL de CV
Acceso IV No. 31 Int. H Parque Industrial
Benito Juarez
C.P. 76120 Querétaro, Qro.
Phone: [phone]
http://www.supersystems.com.mx
Super Systems China
No. 369 XianXia Road
Room 703
Shanghai, CHINA
200336
Phone: [phone]
http://www.supersystems.cn
Super Systems India Pvt. Ltd.
A-26 Mezzanine Floor, FIEE Complex,
Okhla Indl. Area, Phase –2
New Delhi, India 110 020
Phone: [phone]
http://www.supersystemsindia.com

Single Gas Sensor Module (SGSM)
Operations Manual
Super Systems Inc.
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Table of Contents
Introduction..................................................................................................................................... 4
Specifications.................................................................................................................................. 4
Gas Measurement Specifications................................................................................................ 4
Single Gas Sensor Module (SGSM).............................................................................................. 4
Connections Diagram ..................................................................................................................... 5
Connection Ports & Function ...................................................................................................... 5
Mounting ......................................................................................................................................... 6
Modbus............................................................................................................................................ 6
Modbus Registers ........................................................................................................................... 7
Initial Network Configuration ........................................................................................................15
nLocateIP Method ......................................................................................................................15
Control Interface via Web Browser................................................................................................17
Main............................................................................................................................................18
Instrument Information..............................................................................................................18
Sensor Information ....................................................................................................................19
Instrument Configuration...........................................................................................................20
Output Configuration..................................................................................................................20
Output Calibration ......................................................................................................................21
Sensor Calibration......................................................................................................................22
Alarms........................................................................................................................................23
SSI Configuration .......................................................................................................................24
Read/Write Registers.................................................................................................................25
Network Configuration...............................................................................................................26
Replacement Parts ........................................................................................................................27
Warranty.........................................................................................................................................28
Appendix A: DIP Switch Setting Examples.....................................................................................29
Revision History .............................................................................................................................30

Single Gas Sensor Module (SGSM)
Operations Manual
Super Systems Inc.
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Introduction
SSi provides single gas analysis technology for use in heat treating and other production
environments. This manual covers the Single Gas Sensor Modules (SGSM), SSi’s compact single
gas detection modules, which are preconfigured for use with a specific gas. This manual covers
the SGSMs configured for detection of CO (carbon monoxide), CO2(carbon dioxide), or CH4
(methane). An Ethernet-based web interface provides a broad range of control options. The
SGSM also includes onboard datalogging and communications via serial connection, USB, or
Ethernet.
Specifications
Specifications for gas measurement and SGSM operation are included below.
Gas Measurement Specifications
CO2Sensor
Standard Range
0 –2.000%
Optional High Range
0 –20.00%
Accuracy (Standard Range)
±1% of full scale (±0.02% of gas concentration)
Accuracy (High Range)
±1% of full scale (±0.2% of gas concentration)
Resolution (Standard Range)
±0.001%
Resolution (High Range)
±0.01%
Measurement Method
Non-Dispersive Infrared (NDIR)
CO Sensor
Range
0 –100.00%
Accuracy
±1% of full scale (±0.2% of gas concentration)
Resolution
±0.01%
Measurement Method
Non-Dispersive Infrared (NDIR)
CH4Sensor
Range
0 –100.00%
Accuracy
±1% of full scale (±0.2% of gas concentration)
Resolution
±0.01%
Measurement Method
Non-Dispersive Infrared (NDIR)
Single Gas Sensor Module (SGSM)
Response Time
0 - 6 seconds
Power Supply Input Voltage
10 - 30 VDC
Maximum Operating Temperature
122 °F (50 °C)
Analog Outputs
2 (4-20mA or 0-5 V)
Serial Communications
2 RS485 ports using Modbus RTU, configurable baud
rate
Ethernet
1 port
USB
1 Type A port, 1 Type B port
Calibration
Field calibration via web interface

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Operations Manual
Super Systems Inc.
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Connections Diagram
The following diagram shows the connections for the SGSM. Connections will be identical for all
four models (A20831-CO2, A20831-CO2H, A20831-CO, and A20831-CH4)
Figure 1: Electrical & communications diagram for SGSM
Connection Ports & Function
HMI: This is the connection for an HMI.
RS485 #1: This is a communications port used for when this device is the Client.
RS485 #2: This is a communications port used for when this device is the Host to another
device.
10-30 VDC: This is the port to supply power to the SGSM.
Host: This is the USB Host port.
Device: This is the USB Client port.
Ethernet: This is the Ethernet port.
Configuration: This is where dip switch settings can be changed for the Modbus
communications address.
Analog Output: These ports are for analog output #1 and #2.

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Operations Manual
Super Systems Inc.
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Mounting
The flow-through sensor requires gas flow past the sensor. The unit has specific inlet and
outlet ports, which are labeled on the unit and shown in the figure below.
The unit comes with 1/8” FNPT threaded ports in which two stainless steel compression fittings
have been plumbed. The compression fittings are sized to handle ¼” OD tubing.
This unit is designed to be mounted to 35mm DIN rail.
Figure 2: Connection diagram for gas inlet & outlet
Modbus
The DIP switches are accessible from the front of the unit without having to remove the cover
plate (Refer to Figure 1 above).
1. Verify that the unit is not powered. Unplug the power connector to remove power.
2. Remove the two (2) 6-32 screws from the access plate labeled, “Configuration.” This
will expose the DIP switches.

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Operations Manual
Super Systems Inc.
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3. Move the DIP switches accordingly for the Modbus address listed in Appendix A.
Secure the cover plate with the two screws.
Modbus Registers
The following table shows the Modbus registers for the SGSM. The name of the register,
address location, and description are provided.
NOTE: The gas percentage (multiplied by 10000) is located in register 1272.
Register Name
Register Location
Description
VERSION_NUMBER
0
current version number of the
firmware
UART_1_MODE
1
0 = slave, 1 = Sensor Driver
VERSION_NUMBER
0
Current version number of the
firmware
UART_1_MODE
1
0 = slave, 1 = Sensor Driver
UART_1_BAUD_RATE
2
Baud Rate:
0=1200,...,5=19200,...10=115200.
UART_2_MODE
3
0 = slave, 1 = Sensor Driver
UART_2_BAUD_RATE
4
Baud Rate:
0=1200,...,5=19200,...10=115200.
UART_3_MODE
5
0 = slave, 1 = Sensor Driver
UART_3_BAUD_RATE
6
Baud Rate:
0=1200,...,5=19200,...10=115200.
UART_4_MODE
7
0 = slave, 1 = Sensor Driver
UART_4_BAUD_RATE
8
Baud Rate:
0=1200,...,5=19200,...10=115200.
UART_5_MODE
9
0 = slave, 1 = Sensor Driver
UART_5_BAUD_RATE
10
Baud Rate:
0=1200,...,5=19200,...10=115200.
PV_VARIABLE
11
Actual process variable.
BOARD_ADDR
14
Board modbus address
(important for slave only)
MODEL_NUM
15
MODEL number Map as reg 900
SET_FACT_DEF
16
23205 = Full Defaults, 23206 =
H2 Defaults, 23207 = Loop 1

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Super Systems Inc.
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Register Name
Register Location
Description
Defaults, 23208 = Loop 2
Defaults
DEGREE_REG
17
0 = °F, 1 = °C, 2 = °R, 3 = K
CUR_LOOP_CAL_REG
18
Calibration state. 0 = normal, 1
= prep zero, 2 = store zero, 3 =
prep span, 4 = store span
CUR_LOOP_CAL_CHN
19
Calibration channel
CUR_LOOP_CAL_VAL
20
Cal value. 20.12 mA would be
20120
CUR_LOOP_TARGET_VALUE
22
Actual request value
CUR_LOOP_ZERO_TO_TWENTY
24
0-20 mA enable
CUR_LOOP_SOURCE
26
0 = H2, 1 = DA, 2 = NH3, 3 = KN,
4 = External, 5 = Standard Kn, 6
= NDIR gas
CUR_LOOP_ZERO
28
Zero value. This value equates
to either 4 mA or 0 mA
CUR_LOOP_SPAN
30
Span value. This value equates
to either 20 mA
CUR_LOOP_MANUAL
32
If manual mode is set, then this
register controls (0-20000)
INST_PV_MODE
34
0 = H2, 1 = DA, 2 = NH3, 3 = KN,
4 = Standard Kn, 5 = NDIR single
gas
H2_SELECTION
36
0 = Single gas OEM, 1 = In-Situ
Sensor
DISP_OPT
37
Display option bitmap: bit 0 =
H2, 1 = DA, 2 = NH3, 3 = Super
KN, 4 = Standard KN
EEPROM_WRITER_COUNT
38
Counts how many times the
EEPROM has been written
CUR_LOOP_OUTPUT_CNTS
39
Counts being output for each
current loop.
MB_LO_ALARM_BITMAP
96
First of two words containing
the low threshold alarm bit map
MB_HI_ALARM_BITMAP
98
First of two words containing
the high threshold alarm bit
map

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Operations Manual
Super Systems Inc.
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Register Name
Register Location
Description
MB_ALARM_1_LOWER_LIMIT
100
Lower Limit for a given type
(first of 30)
MB_ALARM_1_UPPER_LIMIT
130
Upper Limit for a given type
(first of 30)
MB_ALARM_1_ACTION
160
Action for a given type (first of
30)
SER_NUM_REG
444
actual mapping from Advantech
MB_SET_TIME_WRITE
506
1 = SNTP server write, 2 =
manual write
MB_SET_TM_YEAR
507
set year
MB_SET_TM_MON
508
set month
MB_SET_TM_MDAY
509
set day of month
MB_SET_TM_WDAY
510
set day of week, 0 = Sunday
MB_SET_TM_HOUR
511
set hour
MB_SET_TM_MIN
512
set minute
MB_SET_TM_SEC
513
set second
MB_TM_YEAR
514
year
MB_TM_MON
515
month
MB_TM_MDAY
516
day of month
MB_TM_WDAY
517
day of week, 0 = Sunday
MB_TM_HOUR
518
hour
MB_TM_MIN
519
minute
MB_TM_SEC
520
second
MB_TM_LEAP
521
1 = leap year, 0 = otherwise
MB_COMP_TIME_YEAR
580
compile year
MB_COMP_TIME_MON
581
compile month
MB_COMP_TIME_MDAY
582
compile day of month
MB_COMP_TIME_WDAY
583
compile day of week, 0 = Sunday
MB_COMP_TIME_HOUR
584
compile hour
MB_COMP_TIME_MIN
585
compile minute
MB_COMP_TIME_SEC
586
compile second
MODEL_NUM_OLD
900
MODEL number

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Super Systems Inc.
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Register Name
Register Location
Description
RESET_FACT_DEFAULTS
909
Resets everything to factory
settings
WEBPAGE_ACCESS_CODE
910
Settable register that allows
access to the webpages
SECOND_TIMER_VALUE
911
First of two bytes, memcpy'd 32
bit unsigned integer that
increments every second
forever
MB_IP_ADDR
914
IP Address
MB_IP_MASK
918
Subnet Mask
MB_IP_GTWY
922
Gateway
0
930
Max Round robin time (ms)
RESET_ROUND_ROBIN
931
Resets the round robin time
SENSOR_APP_RR_TIME
932
Round robin time (ms)
SENSOR_APP_RR_TIME_MAX
933
Max Round robin time (ms)
DIGIO_RR_TIME
934
Round robin time (ms)
DIGIO_RR_TIME_MAX
935
Max Round robin time (ms)
UART_1_PARITY
940
0 = 8N1, 1 = 8E1, 2 = 8N2
UART_2_PARITY
941
0 = 8N1, 1 = 8E1, 2 = 8N2
UART_3_PARITY
942
0 = 8N1, 1 = 8E1, 2 = 8N2
UART_4_PARITY
943
0 = 8N1, 1 = 8E1, 2 = 8N2
UART_5_PARITY
944
0 = 8N1, 1 = 8E1, 2 = 8N2
UART_1_MB_ADD_DELAY
955
Additional Intermessage delay
UART_2_MB_ADD_DELAY
956
Additional Intermessage delay
UART_3_MB_ADD_DELAY
957
Additional Intermessage delay
UART_4_MB_ADD_DELAY
958
Additional Intermessage delay
UART_5_MB_ADD_DELAY
959
Additional Intermessage delay
UART_1_MB_ADD_TO
960
Additional Timeout delay
UART_2_MB_ADD_TO
961
Additional Timeout delay
UART_3_MB_ADD_TO
962
Additional Timeout delay
UART_4_MB_ADD_TO
963
Additional Timeout delay
UART_5_MB_ADD_TO
964
Additional Timeout delay