Aspar RS485 MODBUS User manual

RS485 MODBUS Module 6TE
Expansion Module – 6 temperature inputs
Version 1 5 User Manual
Manufactured for

RS485 MODBUS Module 6TE
User Manual
Thank you for choosing our product.
This manual will help you with proper support and proper operation of the device.
The information contained in this manual have been prepared with utmost care by our
professionals and serve as a description of the product without incurring any liability for
the purposes of commercial law.
This information does not release you from the obligation of own judgment and
verification.
We reserve the right to change product specifications without notice.
Please read the instructions carefully and follow the recommendations contained
therein.
WAR I G!
Failure to follow instructions can result in equipment damage or impede
the use of the hardware or software.
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1. Safety rules
•Before first use, refer to this manual
•Before first use, make sure that all cables are connected properly
•Please ensure proper working conditions, according to the device specifications
(eg: supply voltage, temperature, maximum power consumption)
•Before making any modifications to wiring connections, turn off the power supply
2. Module Features
2.1. Purpose and description of the module
The 6TE module allows you to measure the temperature with attached popular
sensor Pt100, Pt500, Pt1000, i100, KTY81-110, TC (Carel) and thermocouple (type
J, K, T, , S, R, B). In addition, it is possible to measure voltages in the range 256mV
(10μV resolution) and to 2048mV (100μV resolution) as well as the measurement of
resistance to 8kΩ.
The device has a set of six inputs for the temperature measurement. It is possible
to 2- or 3-wire measurement of sensors Pt100, i100, Pt500, Pt1000 and 2-wire
measurement thermocouples and other sensors. In addition, the module is equipped with
2 configurable digital outputs (alarms).
Values are read via RS485 (Modbus), so we can easily integrate the module with
popular PLCs, HMI or PC equipped with the appropriate adapter.
This module is connected to the RS485 bus with twisted-pair wire.
Communication is via MODBUS RTU or MODBUS ASCII. The use of 32-bit ARM
core processor provides fast processing and quick communication. The baud rate is
configurable from 2400 to 115200.
The module is designed for mounting on a DI rail in accordance with
DI E 5002.
The module is equipped with a set of LEDs used to indicate the status of inputs
and outputs useful for diagnostic purposes and helping to find errors.
Module configuration is done via USB by using a dedicated computer program.
You can also change the parameters using the MODBUS protocol.
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2.2. Technical Specifications
Power Supply Voltage 10-38VDC; 10-28VAC
Maximum Current 120 mA 12V / 100 mA 24V
Inputs
No of inputs 6
Pt100 operation range -200°C - +850°C
Pt500 operation range -200°C - +850°C
Pt1000 operation range -200°C - +850°C
Ni100 operation range -60°C - +180°C
KTY81-110 operation range -55°C - +150°C
J thermocouple operation range -200°C - +1200°C
K thermocouple operation range -200°C - +1300°C
T thermocouple operation range -200°C - +400°C
N thermocouple operation range -200°C - +1300°C
S thermocouple operation range -0°C - +1700°C
R thermocouple operation range -0°C - +1700°C
B thermocouple operation range -0°C - +1800°C
Resistance From 0 to 8000Ω (1Ω resolution)
Voltage 0 to 2048mV (0,1mV resolution)
0 to 256mV (0,01mV resolution)
Measuring current ~250μA
Measurement resolution 0,1°C
Measurement error ±0,5°C
Cold junction temperature measurement -55°C - +100°C
Measurement error of the cold junction temperature ±1°C
ADC processing time 150ms / channel
Digital outputs Maximum current and voltage 500mA / 55V
Temperature Work -20 °C - +65°C
Storage -40 °C - +85°C
Connectors
Power Supply 2 pin
Communication 3 pin
Inputs and outputs 2 x 10 pin
Quick connector IDC10
Configuration Mini USB
Size
Height 120 mm
Length 101 mm
Width 22,5 mm
Interface RS485 Up to 128 devices
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2.3. Dimensions of the product
Look and dimensions of the module are shown below. The module is mounted
directly to the rail in the DI industry standard. Power connectors, communication and
IOs are at the bottom and top of the module. USB connector configuration and
indicators located on the front of the module.
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3. Communication configuration
3.1. Grounding and shielding
In most cases, IO modules will be installed in an enclosure along with other
devices which generate electromagnetic radiation. Examples of these devices are relays
and contactors, transformers, motor controllers etc. This electromagnetic radiation can
induce electrical noise into both power and signal lines, as well as direct radiation into
the module causing negative effects on the system. Appropriate grounding, shielding
and other protective steps should be taken at the installation stage to prevent these
effects. These protective steps include control cabinet grounding, module grounding,
cable shield grounding, protective elements for electromagnetic switching devices,
correct wiring as well as consideration of cable types and their cross sections.
3.2. Network Termination
Transmission line effects often present a problem on data communication
networks. These problems include reflections and signal attenuation.
To eliminate the presence of reflections from the end of the cable, the cable must
be terminated at both ends with a resistor across the line equal to its characteristic
impedance. Both ends must be terminated since the direction of propagation is bi-
directional. In the case of an RS485 twisted pair cable this termination is typically
120 Ω.
3.3. Setting Module ddress in RS485 Modbus Network
The following table shows how to set switch to determine the address of the
module. The module address is set with the switches in the range of 0 to 31. Addresses
From 32 to 255 can by set via RS485 or USB.
Addr SW5 SW4 SW3 SW2 SW1
0 OFF OFF OFF OFF OFF
1 OFF OFF OFF OFF ON
2 OFF OFF OFF ON OFF
3 OFF OFF OFF ON ON
4 OFF OFF ON OFF OFF
5 OFF OFF ON OFF ON
6 OFF OFF ON ON OFF
7 OFF OFF ON ON ON
8 OFF ON OFF OFF OFF
9 OFF ON OFF OFF ON
10 OFF ON OFF ON OFF
Addr SW5 SW4 SW3 SW2 SW1
11 OFF ON OFF ON ON
12 OFF ON ON OFF OFF
13 OFF ON ON OFF ON
14 OFF ON ON ON OFF
15 OFF ON ON ON ON
16 ON OFF OFF OFF OFF
17 ON OFF OFF OFF ON
18 ON OFF OFF ON OFF
19 ON OFF OFF ON ON
20 ON OFF ON OFF OFF
21 ON OFF ON OFF ON
Addr SW5 SW4 SW3 SW2 SW1
22 ON OFF ON ON OFF
23 ON OFF ON ON ON
24 ON ON OFF OFF OFF
25 ON ON OFF OFF ON
26 ON ON OFF ON OFF
27 ON ON OFF ON ON
28 ON ON ON OFF OFF
29 ON ON ON OFF ON
30 ON ON ON ON OFF
31 ON ON ON ON ON
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3.4. Types of Modbus Registers
There are 4 types of variables available in the module
Type Beginning
address Variable Access Modbus Command
1 00001 Digital Outputs Bit
Read & Write 1, 5, 15
2 10001 Digital Inputs Bit
Read 2
3 30001 Input Registers Registered
Read 3
4 40001 Output Registers Registered
Read & Write 4, 6, 16
3.5. Communication settings
The data stored in the modules memory are in 16-bit registers. Access to
registers is via MODBUS RTU or MODBUS ASCII.
3.5.1. Default settings
You can restore the default configuration by the switch SW6 ( see 3.5.2 - Restore
the default configuration)
Baud rate 19200
Parity No
Data bits 8
Stop bits 1
Reply Delay [ms] 0
Modbus Type RTU
3.5.2. Restore the default configuration
To restore the default configuration:
•turn off the power
•turn on the switch SW6
•turn on the power
•when power and communication LED flash turn off the switch SW6
Caution! After restoring the default configuration all values stored in the registers will
be cleared as well.
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3.5.3. Configuration registers
Modbus Dec Hex Name Values
Address
40003 2 0x02 Baud rate
0 – 2400
1 – 4800
2 – 9600
3 – 19200
4 – 38400
5 – 57600
6 – 115200
other – value * 10
40005 4 0x04 Parity
0 – none
1 – odd
2 – even
3 – always 1
4 – always 0
40004 3 0x03 Stop Bits LSB 1 – one stop bit
2 – two stop bits
40004 3 0x03 Data Bits MSB 7 – 7 data bits
8 – 8 data bits
40006 5 0x05 Response delay Time in ms
40007 6 0x06 Modbus Mode 0 – RTU
1 – ASCII
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4. ndicators
Indicator Description
Power supply LED indicates that the module is correctly powered.
Communication The LED lights up when the unit received the correct packet and sends the answer.
Inputs state LED indicates that the sensor is connected.
Outputs state LED indicates that the output is on.
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Power Supply
Communication
2 digital outputs
state
6 sensors state

RS485 MODBUS Module 6TE
User Manual
5. Module Connection
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6. Switches
Switch Function Description
1 Module address +1
Setting module address from 0 to 31
2 Module address +2
3 Module address +4
4 Module address +8
5 Module address +16
6 Restoring default settings
Restoring default settings
(see 3.5.1 - Default settings and 3.5.2 - Restore the
default configuration).
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7. Modules Registers
7.1. Registered access
Modbus Dec Hex Register Name Access Description
30001 0 0x00 Version/Type Read Version and Type of the device
30002 1 0x01 Switches Read Switches state
40003 2 0x02 Baud rate Read & Write RS485 baud rate
40004 3 0x03 Stop Bits & Data Bits Read & Write No of Stop bits & Data Bits (see 3.5.3)
40005 4 0x04 Parity Read & Write Parity bit
40006 5 0x05 Response Delay Read & Write Response delay in ms
40007 6 0x06 Modbus Mode Read & Write Modbus Mode (ASCII or RTU)
40033 32 0x20 Received packets LSB Read & Write No of received packets
40034 33 0x21 Received packets MSB Read & Write
40035 34 0x22 Incorrect packets LSB Read & Write No of received packets with error
40036 35 0x23 Incorrect packets MSB Read & Write
40037 36 0x24 Sent packets LSB Read & Write No of sent packets
40038 37 0x25 Sent packets MSB Read & Write
30051 50 0x32 Inputs Read Connected sensors
Bit in high state → sensor is connected
40052 51 0x33 Outputs Read & Write Alarms state
bit 6 and 7 alarm outputs
30053 52 0x34 Temperature 1 Read
Temperature or measured analog
in mV·10 for voltage to 2048mV
in mV·100 for voltage to 256mV
in °C·10 for temperature
in Ω for resistance
30054 53 0x35 Temperature 2 Read
30055 54 0x36 Temperature 3 Read
30056 55 0x37 Temperature 4 Read
30057 56 0x38 Temperature 5 Read
30058 57 0x39 Temperature 6 Read
30059 58 0x3A Alarm temperature 1 Read Alarm temperature for alarm output 1
30060 59 0x3B Alarm temperature 2 Read Alarm temperature for alarm output 2
30061 60 0x3C Junction temperature Read Module junction temperature
30062 61 0x3D Measurement current Read Measurement current
40063 62 0x3E MAX alarm level 1 Read & Write
If the temperature exceeds this value the
corresponding alarm flag is set
40064 63 0x3F MAX alarm level 2 Read & Write
40065 64 0x40 MAX alarm level 3 Read & Write
40066 65 0x41 MAX alarm level 4 Read & Write
40067 66 0x42 MAX alarm level 5 Read & Write
40068 67 0x43 MAX alarm level 6 Read & Write
40069 68 0x44 MIN alarm level 1 Read & Write If the temperature is below this value
corresponding alarm flag is set
40070 69 0x45 MIN alarm level 2 Read & Write
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40071 70 0x46 MIN alarm level 3 Read & Write
40072 71 0x47 MIN alarm level 4 Read & Write
40073 72 0x48 MIN alarm level 5 Read & Write
40074 73 0x49 MIN alarm level 6 Read & Write
40075 74 0x4A Alarm settings 1 Read & Write
Alarm settings
0 – alarm due to the current temperature
1 – Remember the value of the alarm, until reset
by the master via Modbus
40076 75 0x4B Alarm settings 2 Read & Write
40077 76 0x4C Alarm settings 3 Read & Write
40078 77 0x4D Alarm settings 4 Read & Write
40079 78 0x4E Alarm settings 5 Read & Write
40080 79 0x4F Alarm settings 6 Read & Write
40081 80 0x50 Constant junction temperature Read & Write Value of junction temperature
40082 81 0x51 Junction temperature offset Read & Write Junction temperature offset
40083 82 0x52 Input 1 settings Read & Write
Analog input mode:
0 – input disabled
1 – voltage to 2048mV
2 – voltage to 256mV
3 – J thermocouple
4 – K thermocouple
5 – T thermocouple
6 – N thermocouple
7 – S thermocouple
8 – R thermocouple
9 – B thermocouple
10 – Pt100 3-wire
11 – Pt100 2-wire
12 – resistance to 8kΩ
13 - Ni100
14 – KTY81-110
15 – Pt500 3-wire
16 – Pt500 2-wire
17 – Pt1000 3-wire
18 – Pt1000 2-wire
19 – NTC Carel 2-wire1
+32 – junction temperature is taken from register
40081 "Constant junction temperature"
40084 83 0x53 Input 2 settings Read & Write
40085 84 0x54 Input 3 settings Read & Write
40086 85 0x55 Input 4 settings Read & Write
40087 86 0x56 Input 5 settings Read & Write
40088 87 0x57 Input 6 settings Read & Write
40089 88 0x58 Output 1 settings Read & Write Alarm output settings
0 – output is set by PLC
+1 – temperature from input 1
+2 – temperature from input 2
+4 – temperature from input 3
+8 – temperature from input 4
1 Sensor must be connected in paraller to resistor 7.5kΩ 1%
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+16 – temperature from input 5
+32 – temperature from input 6
+256 – Output is set if value is greater than Alarm
Value (register 40091 or 40092) („cooling”)
+512 – Output is set if value is less than Alarm Value
( register 40091 or 40092) („heating”)
+1024 – The lowest value from selected inputs
+2048 – The greatest value from selected inputs
(if not select either of the two above options than is
used average value of selected inputs)
40090 89 0x59 Output 2 settings Read & Write
40091 90 0x5A Alarm Value 1 Read & Write Alarm value for outputs
40092 91 0x5B Alarm Value 2 Read & Write
40093 92 0x5C Alarm hysteresis 1 Read & Write The hysteresis value for alarm
outputs
40094 93 0x5D Alarm hysteresis 2 Read & Write
40095 94 0x5E Input resistance 1 Read & Write
Lead wire resistance for each
input
40096 95 0x5F Input resistance 2 Read & Write
40097 96 0x60 Input resistance 3 Read & Write
40098 97 0x61 Input resistance 4 Read & Write
40099 98 0x62 Input resistance 5 Read & Write
40100 99 0x63 Input resistance 6 Read & Write
7.2. Bit access
Modbus
Address
Dec
Address
Hex
Address
Register
name Access Description
801 800 0x320 Input 1 Read Set when the sensor is connected
802 801 0x321 Input 2 Read Set when the sensor is connected
803 802 0x322 Input 3 Read Set when the sensor is connected
804 803 0x323 Input 4 Read Set when the sensor is connected
805 804 0x324 Input 5 Read Set when the sensor is connected
806 805 0x325 Input 6 Read Set when the sensor is connected
817 816 0x330 Alarm 1 Read Alarm state 1
818 817 0x331 Alarm 2 Read Alarm state 2
819 818 0x332 Alarm 3 Read Alarm state 3
820 819 0x333 Alarm 4 Read Alarm state 4
821 820 0x334 Alarm 5 Read Alarm state 5
822 821 0x335 Alarm 6 Read Alarm state 6
823 822 0x336 Digital output 1 Read & Write State of digital output 1
824 823 0x337 Digital output 2 Read & Write State of digital output 2
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8. Configuration software
Modbus Configurator is software that is designed to set the module registers
responsible for communication over Modbus network as well as to read and write the
current value of other registers of the module. This program can be a convenient way to
test the system as well as to observe real-time changes in the registers.
Communication with the module is done via the USB cable. The module does
not require any drivers.
Configurator is a universal program, whereby it is possible to configure all available
modules.
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Table of content
1. Safety rules.......................................................................................................................................3
2. Module Features...............................................................................................................................3
2.1. Purpose and description of the module.....................................................................................3
2.2. Technical Specifications...........................................................................................................4
2.3. Dimensions of the product........................................................................................................5
3. Communication configuration..........................................................................................................6
3.1. Grounding and shielding...........................................................................................................6
3.2. etwork Termination................................................................................................................6
3.3. Setting Module Address in RS485 Modbus etwork...............................................................6
3.4. Types of Modbus Registers.......................................................................................................7
3.5. Communication settings...........................................................................................................7
3.5.1. Default settings.................................................................................................................7
3.5.2. Restore the default configuration......................................................................................7
3.5.3. Configuration registers......................................................................................................8
4. Indicators..........................................................................................................................................9
5. Module Connection........................................................................................................................10
6. Switches..........................................................................................................................................11
7. Modules Registers..........................................................................................................................12
7.1. Registered access....................................................................................................................12
7.2. Bit access................................................................................................................................14
8. Configuration software...................................................................................................................15
Manufactured for:
Aspar s c
ul Oliwska 112
80-209 Chwaszczyno
Poland
ampero@ampero eu
www ampero eu
tel [phone]
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