Siemens SIMATIC S7-1500 Manual

Siemens SIMATIC S7-1500 Manual

Analog input module ai 8xu/i/rtd/tc st
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  • Page 2 ___________________ Preface ___________________ Documentation guide ___________________ SIMATIC Product overview ___________________ Wiring S7-1500/ET 200MP Analog input module ___________________ AI 8xU/I/RTD/TC ST Parameters/address space (6ES7531-7KF00-0AB0) ___________________ Interrupts/diagnostics alarms Manual ___________________ Technical specifications ___________________ Dimensional drawing ___________________ Parameter data records ___________________ Representation of analog values 09/2016 A5E03484864-AD...
  • Page 3 Note the following: WARNING Siemens products may only be used for the applications described in the catalog and in the relevant technical documentation. If products and components from other manufacturers are used, these must be recommended or approved by Siemens. Proper transport, storage, installation, assembly, commissioning, operation and maintenance are required to ensure that the products operate safely and without any problems.
  • Page 4: Preface

    Purpose of the documentation This manual supplements the system manual S7-1500/ET 200MP (https://support.industry.siemens.com/cs/ww/en/view/59191792). Functions that relate in general to the systems are described in this system manual. The information provided in this manual and in the system/function manuals supports you in commissioning the systems.
  • Page 5 In order to protect plants, systems, machines and networks against cyber threats, it is necessary to implement – and continuously maintain – a holistic, state-of-the-art industrial security concept. Siemens’ products and solutions only form one element of such a concept. Customer is responsible to prevent unauthorized access to its plants, systems, machines and networks.
  • Page 6: Table Of Contents

    Table of contents Preface ..............................4 Documentation guide ..........................7 Product overview ..........................11 Properties ..........................11 Wiring ..............................14 Parameters/address space ........................22 Measuring types and ranges ....................22 Parameters ..........................25 Declaration of parameters ...................... 27 Address space ........................31 Interrupts/diagnostics alarms.........................
  • Page 7: Documentation Guide

    Documentation guide The documentation for the SIMATIC S7-1500 automation system, the CPU 1516pro-2 PN based on SIMATIC S7-1500 and the SIMATIC ET 200MP distributed I/O system is arranged into three areas. This arrangement enables you to access the specific content you require.
  • Page 8 You can download the product information free of charge from the Internet (https://support.industry.siemens.com/cs/us/en/view/68052815). Manual Collection S7-1500/ET 200MP The Manual Collection contains the complete documentation on the SIMATIC S7-1500 automation system and the ET 200MP distributed I/O system gathered together in one file. You can find the Manual Collection on the Internet (https://support.industry.siemens.com/cs/ww/en/view/86140384).
  • Page 9 ● Manuals, characteristics, operating manuals, certificates ● Product master data You can find "mySupport" - CAx data on the Internet (http://support.industry.siemens.com/my/ww/en/CAxOnline). Application examples The application examples support you with various tools and examples for solving your automation tasks. Solutions are shown in interplay with multiple components in the system - separated from the focus on individual products.
  • Page 10 You can find the SIMATIC Automation Tool on the Internet (https://support.industry.siemens.com/cs/ww/en/view/98161300). PRONETA With SIEMENS PRONETA (PROFINET network analysis), you analyze the PROFINET network during commissioning. PRONETA features two core functions: ● The topology overview independently scans PROFINET and all connected components.
  • Page 11: Product Overview

    Product overview Properties Article number 6ES7531-7KF00-0AB0 View of the module Figure 2-1 View of the AI 8xU/I/RTD/TC ST module Analog input module AI 8xU/I/RTD/TC ST (6ES7531-7KF00-0AB0) Manual, 09/2016, A5E03484864-AD...
  • Page 12 Product overview 2.1 Properties Properties The module has the following technical properties: ● 8 analog inputs ● Voltage measurement type can be set per channel ● Current measurement type can be set per channel ● Measuring type resistance adjustable for channel 0, 2, 4 and 6 ●...
  • Page 13 Other components The following component can be ordered separately: Front connectors, including potential jumpers and cable ties You can find additional information on accessories in the system manual S7-1500/ET 200MP (https://support.industry.siemens.com/cs/ww/en/view/59191792). Analog input module AI 8xU/I/RTD/TC ST (6ES7531-7KF00-0AB0) Manual, 09/2016, A5E03484864-AD...
  • Page 14: Wiring

    (https://support.industry.siemens.com/cs/ww/en/view/59191792). You can find additional information on compensating the reference junction temperature in the function manual Analog value processing (http://support.automation.siemens.com/WW/view/en/67989094), the structure of a data record in the section Structure of a data record for dynamic reference temperature (Page 62).
  • Page 15 Wiring Pin assignment for the power supply element The power supply element is plugged onto the front connector for powering the analog module. Wire the supply voltage to terminals 41 (L+) and 44 (M). You can use terminals 42 (L+) and 43 (M) to loop the potential to the next module. Figure 3-1 Power supply element wiring Analog input module AI 8xU/I/RTD/TC ST (6ES7531-7KF00-0AB0)
  • Page 16 Wiring Block diagram and pin assignment for voltage measurement The example in the following figure shows the pin assignment for voltage measurement. ① Analog-to-digital converter (ADC) Channel or 9 x channel status (green/red) ② Backplane bus interface Status display LED (green) ③...
  • Page 17 Wiring Connection: 4-wire transmitters for current measurement The example in the following figure shows the pin assignment for current measurement with 4-wire transmitters. ① Wiring 4-wire transmitter Channel or 9 x channel status (green/red) ② Analog-to-digital converter (ADC) Status display LED (green) ③...
  • Page 18 Wiring Connection: 2-wire transmitters for current measurement The example in the following figure shows the pin assignment for current measurement with 2-wire transmitters. ① Wiring 2-wire transmitter Channel or 9 x channel status (green/red) ② Analog-to-digital converter (ADC) Status display LED (green) ③...
  • Page 19 Wiring Connection: 2-, 3- and 4-wire connection of resistance-based sensors or thermal resistors (RTD) The example in the following figure shows the pin assignment for 2-, 3- and 4-wire connections of resistance-based sensors or thermal resistors. ① 4-wire connection Channel or 9 x channel status (green/red) ②...
  • Page 20 Wiring Connection: Non-grounded thermocouples for external/internal compensation and connection of a resistance thermometer (RTD) at the reference channel The following figure shows an example of the pin assignment of non-grounded thermocouples for external/internal compensation and the connection of a resistance thermometer (RTD) at the reference channel.
  • Page 21 Wiring Connection: Grounded thermocouples for internal compensation The following figure shows an example of the pin assignment for grounded thermocouples for internal compensation. ① Wiring of a thermocouple (grounded) for internal compen- Channel or 9 x channel status (green/red) sation ②...
  • Page 22: Parameters/Address Space

    Parameters/address space Measuring types and ranges Introduction The module is set to voltage measurement type with measuring range ±10 V by default. You need to reassign the module parameters with STEP 7 if you want to use a different measurement type or range. Deactivate the input if it is not going to be used.
  • Page 23 Parameters/address space 4.1 Measuring types and ranges Measurement type Measuring range Representation of analog values Thermal resistor RTD PT100 Standard/Climate (3-wire connection) PT200 Standard/Climate (4-wire connection) PT500 Standard/Climate PT1000 Standard/Climate Ni100 Standard/Climate Ni1000 Standard/Climate LG-Ni1000 Standard/Climatic Thermocouple (TC) Type B See Representation of analog values for thermocouples (Page 71) Type E...
  • Page 24 Parameters/address space 4.1 Measuring types and ranges The diagram below shows the temperature profile and the corresponding switching points. Figure 4-2 Temperature profile and the corresponding switching points Measured value acquisition with PTC resistors If faults occur (for example supply voltage L+ missing) that make it impossible to acquire measured values with PTC resistors, the corresponding channels (IR x/IR x+1) report overflow (7FFF ).
  • Page 25: Parameters

    Parameters/address space 4.2 Parameters Parameters AI 8xU/I/RTD/TC ST parameters When you assign the module parameters in STEP 7, you use various parameters to specify the module properties. The following table lists the configurable parameters. The effective range of the configurable parameters depends on the type of configuration. The following configurations are possible: ●...
  • Page 26 Parameters/address space 4.2 Parameters Parameters Range of values Default Parameter as- Scope with configuration software, setting signment in e.g., STEP 7 (TIA Portal) GSD file GSD file PROFINET IO PROFIBUS DP °C Channel Module Temperature unit Kelvin (K) • • Fahrenheit (°F) •...
  • Page 27: Declaration Of Parameters

    Parameters/address space 4.3 Declaration of parameters Parameters of the reference channel You cannot configure the reference channel with GSD file. You have to transfer the reference channel to the module with data record 8. If you want to change the default settings, you have to transfer the parameters to the module with data record 8, see chapter Parameter assignment and structure of the parameter data records (Page 51).
  • Page 28 Parameters/address space 4.3 Declaration of parameters Current limit for wire break diagnostics Threshold for reporting wire breaks. The value can be set to 1.185 mA or 3.6 mA, depending on the sensor used. Temperature coefficient The temperature coefficient depends on the chemical composition of the material. In Europe, only one value is used per sensor type (default value).
  • Page 29 Parameters/address space 4.3 Declaration of parameters Smoothing The individual measured values are smoothed using filtering. The smoothing can be set in 4 levels. Smoothing time = number of module cycles (k) x cycle time of the module. The following figure shows the number of module cycles after which the smoothed analog value is almost 100%, depending on the set smoothing.
  • Page 30 Parameters/address space 4.3 Declaration of parameters Reference junction for TC The following settings can be configured for the reference junction parameter: Table 4- 3 Possible parameter assignments for the reference junction parameter TC Setting Description Fixed reference temperature The reference junction temperature is configured and stored in the module as a fixed value.
  • Page 31: Address Space

    Parameters/address space 4.4 Address space Address space The module can be configured differently in STEP 7; see following table. Depending on the configuration, additional/different addresses are assigned in the process image of the inputs. Configuration options of AI 8xU/I/RTD/TC ST You can configure the module with STEP 7 (TIA Portal) or with a GSD file.
  • Page 32 Parameters/address space 4.4 Address space Address space of AI 8xU/I/RTD/TC ST The following figure shows the address space allocation for the configuration as 8-channel module. You can freely assign the start address for the module. The addresses of the channels are derived from the start address. "IB x"...
  • Page 33 Parameters/address space 4.4 Address space Address space for configuration as 8 x 1-channel AI 8xU/I/RTD/TC ST QI For the configuration as a 8 x 1-channel module, the channels of the module are divided into multiple submodules. The submodules can be assigned to different IO controllers when the module is used in a shared device.
  • Page 34 Parameters/address space 4.4 Address space Address space for configuration as 1 x 8-channel AI 8xU/I/RTD/TC ST MSI The channels 0 to 7 of the module are copied in up to four submodules with configuration 1 x 8-channel module (Module-internal shared input, MSI). Channels 0 to 7 are then available with identical input values in different submodules.
  • Page 35 Parameters/address space 4.4 Address space The figure below shows the assignment of the address space with submodules 1 and 2. Figure 4-6 Address space for configuration as 1 x 8-channel AI 8xU/I/RTD/TC ST MSI with value status Analog input module AI 8xU/I/RTD/TC ST (6ES7531-7KF00-0AB0) Manual, 09/2016, A5E03484864-AD...
  • Page 36 Address space for configuration as 1 x 8-channel AI 8xU/I/RTD/TC ST MSI with value status Reference You can find information on the Shared Input/Output (MSI/MSO) function in the section Module-Internal Shared Input/Output (MSI/MSO) of the PROFINET with STEP 7 V13 (https://support.industry.siemens.com/cs/ww/en/view/49948856) function manual. Analog input module AI 8xU/I/RTD/TC ST (6ES7531-7KF00-0AB0) Manual, 09/2016, A5E03484864-AD...
  • Page 37: Interrupts/Diagnostics Alarms

    Interrupts/diagnostics alarms Status and error displays LED displays The following figure shows the LED displays (status and error displays) of AI 8xU/I/RTD/TC ST. Figure 5-1 LED displays of the module AI 8xU/I/RTD/TC ST Analog input module AI 8xU/I/RTD/TC ST (6ES7531-7KF00-0AB0) Manual, 09/2016, A5E03484864-AD...
  • Page 38 Interrupts/diagnostics alarms 5.1 Status and error displays Meaning of the LED displays The following tables explain the meaning of the status and error displays. Remedial measures for diagnostic alarms can be found in section Diagnostic alarms. RUN and ERROR LED Table 5- 1 Status and error displays RUN and ERROR LEDs...
  • Page 39: Interrupts

    Interrupts/diagnostics alarms 5.2 Interrupts Interrupts Analog input module AI 8xU/I/RTD/TC ST supports the following diagnostic and hardware interrupts. You can find detailed information on the event in the error organization block with the "RALRM" instruction (read additional interrupt info) and in the STEP 7 online help. Diagnostic interrupt The module generates a diagnostic interrupt at the following events: ●...
  • Page 40 Interrupts/diagnostics alarms 5.2 Interrupts Reaction when reaching limits 1 and 2 at the same time If the two high limits 1 and 2 are reached at the same time, the module always signals the hardware interrupt for high limit 1 first. The configured value for high limit 2 is irrelevant. After processing the hardware interrupt for high limit 1, the module triggers the hardware interrupt for high limit 2.
  • Page 41: Diagnostics Alarms

    Interrupts/diagnostics alarms 5.3 Diagnostics alarms Diagnostics alarms A diagnostics alarm is generated and the ERROR LED flashes on the module for each diagnostics event. The diagnostics alarms can be read out in the diagnostics buffer of the CPU, for example. You can evaluate the error codes with the user program. If the module is operated distributed with PROFIBUS DP in an ET 200MP system, you have the option to read out diagnostics data with the instruction RDREC or RD_REC using data record 0 and 1.
  • Page 42: Technical Specifications

    Technical specifications Technical specifications of the AI 8xU/I/RTD/TC ST 6ES7531-7KF00-0AB0 General information Product type designation AI 8xU/I/RTD/TC ST Hardware functional status FS01 Firmware version V2.0.0 FW update possible • Product function I&M data Yes; I&M0 to I&M3 Scalable measuring range Scalable measured values Measuring range adjustment Engineering with...
  • Page 43 Technical specifications 6ES7531-7KF00-0AB0 Power loss Power loss, typ. 2.7 W Analog inputs Number of analog inputs For current measurement • For voltage measurement • For resistance/resistance thermometer meas- • urement For thermocouple measurement • Permissible input voltage for voltage input (de- 28.8 V struction limit), max.
  • Page 44 Technical specifications 6ES7531-7KF00-0AB0 Input ranges (rated values), currents 0 mA to 20 mA Input resistance (0 mA to 20 mA) 25 Ω; plus approx. 42 ohm for overvoltage protec- tion by PTC -20 mA to +20 mA Input resistance (-20 mA to +20 mA) 25 Ω;...
  • Page 45 Technical specifications 6ES7531-7KF00-0AB0 Input resistance (Ni 1000) 10 MΩ Ni 1000 according to GOST LG-Ni 1000 Yes; Standard/Climate Input resistance (LG-Ni 1000) 10 MΩ Ni 120 Ni 120 according to GOST Ni 200 according to GOST Ni 500 Ni 500 according to GOST Pt 10 Pt 10 according to GOST Pt 50...
  • Page 46 Technical specifications 6ES7531-7KF00-0AB0 Thermocouple (TC) Temperature compensation Configurable • Internal temperature compensation • External temperature compensation via RTD • Yes, fixed value can be set Compensation for 0 °C reference point tem- • perature Reference channel of the module • Cable length shielded, max.
  • Page 47 Technical specifications 6ES7531-7KF00-0AB0 Errors/accuracies Linearity error (in relation to input range), (+/-) 0.02% Temperature error (in relation to input range), (+/-) 0.005%/K; for TC typ. T 0.02 +/- %/K Crosstalk between the inputs, max. -80 dB Repeat accuracy in settled state at 25 °C (in rela- 0.02% tion to input range), (+/-) Temperature errors of internal compensation...
  • Page 48 Technical specifications 6ES7531-7KF00-0AB0 Diagnostics display LED RUN LED Yes; green LED ERROR LED Yes; red LED Monitoring of supply voltage (PWR LED) Yes; green LED Channel status display Yes; green LED For channel diagnostics Yes; red LED For module diagnostics Yes;...
  • Page 49: Dimensional Drawing

    Dimensional drawing The dimensional drawing of the module on the mounting rail, as well as a dimensional drawing with open front panel are provided in the appendix. Always adhere to the specified dimensions for installations in cabinets, control rooms, etc. Figure A-1 Dimensional drawing of the AI 8xU/I/RTD/TC ST module Analog input module AI 8xU/I/RTD/TC ST (6ES7531-7KF00-0AB0)
  • Page 50 Dimensional drawing Figure A-2 Dimensional drawing of the AI 8xU/I/RTD/TC ST module, side view with open front panel Analog input module AI 8xU/I/RTD/TC ST (6ES7531-7KF00-0AB0) Manual, 09/2016, A5E03484864-AD...
  • Page 51: Parameter Data Records

    Parameter data records Parameter assignment and structure of the parameter data records The data records of the module have an identical structure, regardless of whether you configure the module with PROFIBUS DP or PROFINET IO. Dependencies for configuration with GSD file When configuring the module with a GSD file, remember that the settings of some parameters are dependent on each other.
  • Page 52 0 and 1. You can find additional information in the Interrupts section of the manual for the PROFIBUS DP interface module on the Internet (http://support.automation.siemens.com/WW/view/en/78324181). Assignment of data record and channel The parameters in data records 0 to 7 and in data record 8 are available for 1x 8-channel configuration and are assigned as follows: ●...
  • Page 53 Parameter data records B.1 Parameter assignment and structure of the parameter data records Data record structure The figure below shows the structure of data record 0 for channel 0 as an example. The structure is identical for channels 1 to 7. The values in byte 0 and byte 1 are fixed and may not be changed.
  • Page 54 Parameter data records B.1 Parameter assignment and structure of the parameter data records Figure B-2 Structure of data record 0: Bytes 7 to 27 Analog input module AI 8xU/I/RTD/TC ST (6ES7531-7KF00-0AB0) Manual, 09/2016, A5E03484864-AD...
  • Page 55 Parameter data records B.1 Parameter assignment and structure of the parameter data records Structure of data record 8, reference channel (COMP) of the module The reference channel compensates the measured value for channels 0 to 7. The figure below shows the structure of data record 8. Enable a parameter by setting the corresponding bit to "1".
  • Page 56 Parameter data records B.1 Parameter assignment and structure of the parameter data records Codes for measurement types The following table lists all measurement types of the analog input module along with their codes. Enter these codes at byte 2 of the data record for the corresponding channel (see the figure Structure of data record 0: Bytes 7 to 27).
  • Page 57 Parameter data records B.1 Parameter assignment and structure of the parameter data records Codes for measuring ranges The following table lists all measuring ranges of the analog input module along with their codes. Enter these codes accordingly at byte 3 of the data record for the corresponding channel (see the figure Structure of data record 0: Bytes 7 to 27).
  • Page 58 Parameter data records B.1 Parameter assignment and structure of the parameter data records Thermal resistor Pt100 Climate 0000 0000 Ni100 Climate 0000 0001 Pt100 standard 0000 0010 Ni100 standard 0000 0011 Pt500 standard 0000 0100 Pt1000 standard 0000 0101 Ni1000 standard 0000 0110 Pt200 Climate 0000 0111...
  • Page 59 Parameter data records B.1 Parameter assignment and structure of the parameter data records Codes for measuring ranges, reference channel (COMP) of the module The following table lists all measuring ranges along with their codes for the reference channel (COMP). Enter these codes in byte 3 of data record 8 (see figure Structure of data record 8, reference channel of the module: Bytes 0 to 27).
  • Page 60 Parameter data records B.1 Parameter assignment and structure of the parameter data records Valid values for fixed reference temperatures The values that you can set for fixed reference temperatures must be in the valid range of values. The resolution is a tenth of a degree. Table B- 6 Valid values for fixed reference temperatures Temperature unit...
  • Page 61 Parameter data records B.1 Parameter assignment and structure of the parameter data records Table B- 10 Limits for thermocouples type K, N, R, and S Thermocouple Type K Type N Types R, S °C °F °C °F °C °F 16219 29515 18951 15499...
  • Page 62: Structure Of A Data Record For Dynamic Reference Temperature

    Parameter data records B.2 Structure of a data record for dynamic reference temperature Structure of a data record for dynamic reference temperature The WRREC instruction is used to transfer the reference junction temperature via data record 192 to data record 199 to the module. The description of the WRREC instruction can be found in the online help from STEP 7.
  • Page 63 3214 to 7FF8 Additional information For more information on compensation of the reference junction temperature via data record refer to the Analog value processing (http://support.automation.siemens.com/WW/view/en/67989094) function manual in the internet. Analog input module AI 8xU/I/RTD/TC ST (6ES7531-7KF00-0AB0) Manual, 09/2016, A5E03484864-AD...
  • Page 64: Representation Of Analog Values

    Representation of analog values Introduction This chapter shows the analog values for all measuring ranges supported by the AI 8xU/I/RTD/TC ST analog module. Measured value resolution Each analog value is written left aligned to the tags. The bits marked with "x" are set to "0". Note This resolution does not apply to temperature values.
  • Page 65: Representation Of Input Ranges

    Representation of analog values C.1 Representation of input ranges Representation of input ranges The following tables set out the digitalized representation of the input ranges by bipolar and unipolar range. The resolution is 16 bits. Table C- 2 Bipolar input ranges Dec.
  • Page 66: Representation Of Analog Values In Voltage Measuring Ranges

    Representation of analog values C.2 Representation of analog values in voltage measuring ranges Representation of analog values in voltage measuring ranges The following tables list the decimal and hexadecimal values (codes) of the possible voltage measuring ranges. Table C- 4 Voltage measuring ranges ±10 V, ±5 V, ±2.5 V, ±1 V, Values Voltage measuring range...
  • Page 67: Representation Of Analog Values In The Current Measuring Ranges

    Representation of analog values C.3 Representation of analog values in the current measuring ranges Table C- 6 Voltage measuring range 1 to 5 V Values Voltage measuring range Range 1 to 5 V 32767 7FFF >5.704 V Overflow 32511 7EFF 5.704 V Overshoot range 27649...
  • Page 68: Representation Of The Analog Values Of Resistance-Based Sensors/Resistance Thermometers

    Representation of analog values C.4 Representation of the analog values of resistance-based sensors/resistance thermometers Table C- 8 Current measuring ranges 0 to 20 mA and 4 to 20 mA Values Current measuring range 0 to 20 mA 4 to 20 mA 32767 7FFF >23.52 mA...
  • Page 69 Representation of analog values C.4 Representation of the analog values of resistance-based sensors/resistance thermometers The following tables list the decimal and hexadecimal values (codes) of the supported resistance thermometers. Table C- 10 Thermal resistors Pt 100, Pt 200, Pt 500 and Pt 1000 Standard Pt x00 Values Pt x00...
  • Page 70 Representation of analog values C.4 Representation of the analog values of resistance-based sensors/resistance thermometers Table C- 12 Thermal resistors Ni 100, Ni 1000, LG-Ni 1000 Standard Ni x00 Values Ni x00 Values Ni x00 Values Range standard Standard Standard in °C in °F in K (1 digit =...
  • Page 71: Representation Of Analog Values For Thermocouples

    Representation of analog values C.5 Representation of analog values for thermocouples Representation of analog values for thermocouples The following tables list the decimal and hexadecimal values (codes) of the supported thermocouples. Table C- 14 Thermocouple type B Type B in Values Type B in Values...
  • Page 72 Representation of analog values C.5 Representation of analog values for thermocouples Table C- 16 Thermocouple type J Type J in Values Type J in Values Type J in Values Range °C °F > 1450.0 32767 7FFF > 2642.0 32767 7FFF >...
  • Page 73 Representation of analog values C.5 Representation of analog values for thermocouples Table C- 19 Thermocouple type R and S Type R, S Values Type R, S Values Types R, Values Range in °C in °F S in K > 2019.0 32767 7FFF >...
  • Page 74: Measured Values For Wire Break Diagnostic

    Representation of analog values C.6 Measured values for wire break diagnostic Measured values for wire break diagnostic Measured values on diagnostic event "wire break", dependent on diagnostics enables Error events initiate a diagnostics entry and trigger a diagnostics interrupt if configured accordingly.

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