SM2 analogue to Modbus module
Contents
1. Signalling of the lower input 4 range exceeding Signalling of the upper input 4 range Individual characteristic of the input 4 Individual characteristic of the input 3 Individual characteristic of the input 2 Individual characteristic of the input 1 x x bits 15 14 13 12 11 10 9 8 7 6 5 4 MSB LSB N Bit 15 12 Empty Bit value is always equal 0 Bit 11 Signalling of the lower range exceeding of input 4 0 normal work 1 range exceeding Bit 10 Signalling of the upper range exceeding of input 4 0 normal work 1 range exceeding Bit 9 Signalling of the lower range exceeding of input 3 0 normal work 1 range exceeding Bit 8 Signalling of the upper range exceeding of input 3 0 normal work 1 range exceeding Bit 7 Signalling of the lower range exceeding of input 2 0 normal work 1 range exceeding Bit 6 Signalling of the upper range exceeding of input 2 0 normal work 1 range exceeding 18 Bit 5 Signalling of the lower range exceeding of input 1 0 normal work 1 range exceeding Bit 4 Signalling of the upper range exceeding of input 1 0 normal work 1 range exceeding Bit 3 Individual characteristic of the input 4 0 individual characteristic switched on 1 individual characteristic switched off Bit 2 Individual characteristic of the input 3 0 individual characteristic switched2. 1 PrH gt PrL OC Result 1 active OC 0 inactive OC PrL OC i gt PrH OC Result 1 active OC 0 inactive OC gt PrL OC PrH OC Result Fig 7 Types of OC1 and OC2 output Caution In the execution for the measurement of resistance or temperature Pt100 only the two wire method is accessible The resistance of the wire connecting the sen sor with the module must be introduced from the master device e g PC For this purpose we propose switch the module into the resistance measurement mode short circuit the ends of wires which the sensor is fixed to read out the numeric value which represents the resistance of both wires introduce the read out value into the Comp WX X 1 2 register of the appropriate input Each input has a separate compensation register The described procedure must be carried out for switched on measuring inputs The resistance can be also me asured by any meter class lt 0 1 and introduced into registers In case on user s individual characteristic switched on the measured result is linearly transformed in accordance with introduced X and Y parameters Then the calculated value is found in the result register In case of mathematical operations switching on the result in the WF register is calculated in accordance with the equation introduced to the module Sequence of calculations result recalculation basing on the user s individu
3. lt 5 3 5 5 3 3 5 5 e 2 2 E Fig 4 connection way of input signals Taking in consideration electromagnetic interference one must use shielded wires to connect input signals and output signals The supply must be connected by a two wire cable with the appropriate wire diameter ensuring its protection by means a safety fuse 10 SM2 module PC computer PC computer with 5 485 card D ID B l t A El DB9 EE cai GND El 9 5 2 module uM RxD O E RS 232 Ted EH I D rre Y n n Fig 5 Connection way of RS 485 and RS 232 interfaces 11 5 HANDLING After connecting external signals and switching the supply on the SM2 module is ready to work The lighted green diode signals the module work The green diode RxD signals the module polling however the yellow diode TxD signals the module response Diodes should ignite in cycles during the data transmission both through the RS 232 and the RS 485 interface One can program all module parameters by means of RS 232 or
4. must introduce this value See the user s manual under the description of the Status 2 Concerns only the module for resistance measurement or for co ope ration with a Pt100 sensor 35 8 EXAMPLES OF SM2 MODULE PROGRAMMING Example 1 Switching appropriate measuring inputs and averaging time on Module operation with two inputs e g 1 and 3 The first input has to average with a 100 ms time 0 1s and the third input with a 10 min time 600 s One must program the parameter e Input 121 e Input2 0 e Input 3 1 e Input 4 0 e Cnt W1 0 1 e Cnt W3 600 The module will carry out the measurement on the input 1 and 3 In the register corresponding to first input the result will be refreshed every 100 ms and in the register corresponding to third register every 10 minutes Example 2 Programming the user s individual characteristic One must program the module in such a way that it measures the water level in a tank with characteristic 4 mA gt 0 m 20 mA gt 3 6 m in the input 1 whereas on the input 2 the temperature with characteristic 4 mA gt 0 C 20 mA gt 50 C One must program the parameter e IndW1 1 e X1W1 0 e Y1W1 0 e X2W1 3 6 e Ind W2 1 e X1W2 4 e Y1W2 0 e X2W2 20 e Y2W2 50 Example 3 Programming mathematical function One must program the module in such a way that it measures the current on the input 1 the voltage on the input 2 and calculate the apparent power of
5. transmission mode transmission to many devices Only one module can be connected to the master s RS 232 5 2 Description of the MODBUS protocol function Following functions of the MODBUS protocol have been implemented in the SM2 module Opis funkcji Signification 03 03 h Readout of n register 06 06 h Write of a single register 16 10 h Write of n registers 17 11 h Slave device identification Readout of n registers code 03h The function is not accessible in the broadcast mode Example Readout of 2 registers beginning by the register with the 1DBDh address 7613 Demand Device Register address Number of registers Checksum Function CRC address Hi Lo Hi Lo 01 03 1D BD 00 02 52 43 13 Answer Device Function Number Value from the register Value from the register address of bytes 1DBD 7613 1DBE 7614 01 03 08 40 Write of values in the register code 06h The function is accessible in the broadcast mode Example Write the register with 1DBDh 7613 address Demand Device Function Register address Value for the register Checksum address Lo 1DBD 7613 CRC 01 06 1D BD 85 AD Answer Device Function Register address Value from the register Checksum address Lo 1DBD 7613 CRC 01 06 1D BD 85 AD Write in n registers code 10h The function is accessible in broadcast mode Example Write of tw
6. 24 Value 0 Measuring input switched off 1 Measuring input switched on In case of the input off the value 0 is returned Input 4 type Range of changes as for W1 type Czas usredniania pomiaru wej cia 4 Zakres zmian jak dla Cnt W1 Individual characteristic of the input 4 99999 99999 Value 0 off 1 on Parameters of the individual characte ristic of input 4 99999 99999 99999 99999 99999 99999 The range changes as for X1 W1 Y1 W1 X2 W1 Y2 W1 Parameters of the mathematical function Value Parameter switched off Result 1 input 1 W1 Result 2 input 2 W2 Result 3 input 3 W3 Result 4 input 4 W4 Root of the result 1 v W1 Root of the result 2 Y W2 Root of the result 3 v W3 Root of the result 4 v W4 Result 1 squared W1 10 Result 2 squared W2 11 Result 3 squared W3 12 Result 4 squared W4 Parameters of the mathematical function serves to recalculate the measured input quantity into th output quantity WF basing on the function WF A lt Operator1 gt B lt O perator2 gt C lt Operator3 gt D When recalculating the input signal the module recalculates at first the value basing on the individual characteristic and then this result is transmitted to the arythmetical function Examples of using mathematical functions are pres
7. RS 485 The RS 232 port has constant transmission parameters in accordance with tech nical data what enables the connection with the module even when programmed parameters of the RS 485 digital output are unknown address mode rate The RS 485 standard allows to the direct connection to 32 devices on a single serial link up to 1200 m To connect a greater number of devices it is necessary to use additional intermediate separating systems The way of the interface connection is given in the user s manual fig 5 To obtain the correct transmission itis necessary to connect A and B lines in parallel with their counterparts in other devices The connection must be carried out with a screened wire The screen must be connect to the protective terminal in a single point The GND line serves to the additional protection of the interface line at long connections One must connect it to the protective terminal it is not necessary for the correct interface work To obtain the connection with the PC computer through the RS 485 port an RS 232 RS 485 converter e g PD51 of Lumel s production or an RS 485 interface card is indispensable The marking of transmission lines for the card in the PC computer depends on the card manufacturer To obtain the connection through the RS 232 port the wire added to the module is sufficient The connection way of both ports RS 232 and RS 485 is shown on the fig 5 The module can be connected to the device of mast
8. continuous improvement and we reserve the right to make changes in design and specifications of any products as engineering advances or necessity requires and revise the above 41 42 43 8 Z0 ZINS
9. x 120 x 100 mm Weight lt 0 3 kg Fixing on a 35 mm rail Power consumption lt 4 VA Resistance against decays acc to EN 50082 2 Electromagnetic compatibility immunity acc to EN 50082 2 emission acc to EN 50081 2 additional error from electromagnetic hazard lt 0 296 Safety requirements acc to EN 61010 1 standard installation category pollution grade 2 N phase to earth working voltage supply 300 V input 50V output 50V 34 7 BEFORE FAILURE WILL DECLARED In case of incorrect symptoms please to acquaint with the table below SYMPTOMS 1 The module diode is not illuminated PROCEDURE Check the connection of the network cable REMARKS 2 The module does not communicate with the device master via the RS 232 port Lack of transmission signalling on RxD and TxD diodes Check if the wire is connected to the appropriate module socket Check if the device master is set on 9600 baud rate 8N1 mode and address 1 RS 232 has constant trans mission para meters 3 The module does not communicate with the device master via the RS 485 port Lack of transmission signalling on RxD and TxD diodes Check if the wire is connected to the appropriate mo dule terminal Check if the device master is set on the same transmission parameters as the module baud rate mode address In case of necessity to change transmission parameters when we cannot communi cate t
10. 4 CHANNEL MODULE OF ANALOG INPUTS SM2 TYPE USER S MANUAL 5 Y APPLICATION 5 2 IMODULE SET e 6 3 BASIC REQUIREMENTS AND OPERATIONAL SAFETY 6 4 INSTALLATION coi 9 4 1 Way of fixing 4 2 Diagrams of external connections sse 9 A ce 5 1 Description of the MODBUS protocol implementation 5 2 Description of the MODBUS protocol function 5 3 Map of registers ieri eere decedent os eere ERR eR 5 4 Registers only 5 5 Registers for write and readout 6 TECHNICALDATA 000 33 7 BEFORE A DAMAGE WILL BE DECLARED 35 8 EXAMPLES OF THE SM2 MODULE PROGRAMMING 36 9 ORDERING CODPES iiti 40 10 MAINTENANCE AND WARRANTY 41 1 APPLICATION the SM2 4 channel module of analog inputs is destined to convert standard sig nals resistance or temperature signals into numerical data accessible through the RS 485 or RS 232 port by means of the MODBUS protocol The measurement is carried out independently on four galvanically insulated between them channels RS 485 and RS 232 output ports are galvanically insulated from input signals and the supply The module programming is possible by means of the RS 485 or RS 232 port In the set of SM2 mod
11. U 101 8 1 RTU 110 801 RTU 111 8N1 RTU Bit 5 3 Baud rate 000 2400 bit s 001 4800 bit s 010 9600 bit s 011 19200 bit s 100 38400 bit s 101 57600 bit s 110 115200 bit s Bit 2 0 Type of inputs 000 4 x 0 10 V 001 4 x 0 4 20 mA 010 2 x 0 10 V 2 x 0 4 20 mA 011 4 x Pt100 resistance thermometer inputs or 4 x resistance inputs up to 400 Q 20 5 5 Registers for readout and write Table 1 Description The value is placed in two successive 16 bytes regi sters These registers include The value is placed in 32 bit Write w Readout r the same data as 32 bit regi registers sters from the area 7600 Identifier Device identifier SM2 Identifier Four 0 10 V voltage inputs Four 0 4 20 mA current inputs Two 0 10 voltage input Two 0 4 20 mA current input Four Pt100 inputs or Four resistance inputs up to 4000 of the RS 485 interface bit s 2400 4800 9600 19200 38400 57600 115200 transmission through the RS 485 interface Interface switched off ASCII 8N1 ASCII 7E1 ASCII 701 RTU 8N2 RTU 8E1 RTU 801 RTU 8N1 Device address tion of module transmission parameter changes Value 0 Lack of reaction 1 Switchin Acceptation of changes 9 ON OFF of the measuring input 1 Value 0 Me
12. aced into 32 bite registers Identifier Constant identifying the device SM2 identifier Four 0 10 V voltage inputs Four 0 4 20 mA currents Two 0 10 V voltage input Two 0 4 20 mA current input Four Pt100 inpus or Four resistance inputs up to 4000 Status 1 Status 1 is the register describing the present module state Status 2 Status 2 is the register describing the present module state wi Measured value on the input 1 Measured value on the input 2 Measured value on the input 3 Measured value on the input 4 Calculated value basing on the function Minimum of the measured value on the input 1 Maximum of the measured value on the input 1 Minimum of the measured value on the input 2 Maximum of the measured value on the input 2 Minimum of the measured value on the input 3 Maximum of the measured value on the input 3 Minimum of the measured value on the input 4 Maximum of the measured value on the input 4 Minimum of the calculated value Maximum of the calculated value 17 Description of the Status1 register exceeding Signalling of the lower input 3 range exceeding Signalling of the upper input 3 range exceeding Signalling of the lower input 2 range exceeding Signalling of the upper input 2 range exceeding Signalling of the lower input 1 range exceeding Signalling of the upper input 1 range exceeding
13. al characteristic if it is switched on calculation of the introduced function carrying out the ope ration on the function result The module supervises currently the value of the introduced parameter In case when the introduced value is beyond the range of changes given in the table 1 the module does not make the parameter write 31 Manufacturer parameters of the 5 2 module Table 2 Manufacturer s value Input 1 2 3 4 1 switched on Cnt W1 Cnt W2 Cnt W3 Cnt W4 1 1 8 Ind W1 Ind W2 Ind W3 Ind W4 0 switched off X1 W1 X1 W2 X1 W3 X1 W4 0 Y1 W1 Y1 W2 Y1 W3 Y1 W4 0 X2 W1 X2 W2 X2 W3 X2 W4 0 Y2 W1 Y2 W2 Y2 W3 Y2 W4 0 A B C D 0 switched off Operator 1 2 3 0 Operator WF 0 switched off Rate 2 9600 Mode 4 RTU 8N2 Address 1 0C1 O input 1 Typ 4 switched off manually Pri OC1 0 Prh 0 Dly OC1 0 lack of delay OC2 0 Input 1 2 4 switched off manually Prl OC2 0 Prh OC2 0 Dly 2 0 lack of delay Comp W1 Comp W2 Comp W3 Comp W4 0 32 6 TECHNICAL DATA INPUTS Depending on the execution code for individual channels voltage measurement 0 10 V input resistance gt 1 MQ current measurement 0 20 mA input resistance lt 10 Q resistance measurement 0 400 Q Pt100 200 850 C Current flowing through the Pt 100 sensor lt 250 uA Resistance of leads conne
14. asuring input switched off 1 Measuring input switched on In case of is returned the input off the value O Input 1 type 0 10 V for SM2 00XXX execution 0 10 V for SM2 02XXX execution 0 4 20 for SM2 01XXX execution 0 Pt100 1 Resistance lt 400 Q Notice The range cl on the exec ange of this parameter depends ution code Measurement averaging time of the input 1 Value 0 The measurement is switched off module does not measure on this input the value 0 is returned 0 1 6500 Individual Measuring time in seconds characteristic of the input 1 22 Value 0 off 1 on 99999 99999 99999 99999 99999 99999 99999 99999 Parameters of the individual characte ristic of input 1 On the base of given co ordinates of two points by the user the module determines from the system of equations coefficients a and b of the individual characteristic Y1W1 a X1W1 b Y2W1 a X2W1 b where X1 W1 and X2 W1 measured value Y1 W1 and Y2 W1 Expected value on the digital output The graphical presentation of the individual characteristic is presented on the fig 6 At output signal recalculations at first the mo dule recalculates the value on the base of the individual characteristic and then this result is transmitted to the arithmetic function Switching ON OFF of
15. ched off Manually schwitched on Manually schwitched off The graphical imaging of the OC type out put operation is presented on the fig 7 Pri 0C2 99999 99999 Lower threshold of output 2 OC type operation Prh 0 2 99999 99999 Upper threshold of output 2 OC type operation The operation delay of the output 2 of OC 0C2 0 6500 type in seconds The OC output will be steered up if the alarm active state will be longer than the programmed value Del min 1 Erasing of the i minimal va Del max 1 Erasing of the in maximal value Del min 2 Erasing of the input 2 minimal value Del max 2 s Erasing of the input 2 maximal value Del min 3 Eo Erasing of the input 3 minimal value Del max 3 g Erasing of the input 2 maximal value Del min 4 E Erasing of the input 4 minimal value Del max 4 b Erasing of the input 2 maximal value Del min WF m Erasing of the function result minimal value Del max WF e Erasing of the function result maximal value Del min max Erasing of minimal and maximal value Range 0 lack of operation 1 erasing Caution After carrying out the erasing operation the value of this register is zero Resistance value of wires connecting the sensor with the module input 1 The register is used only in the execution or the resistance or temperature measu rement Resistance value of wires connectin
16. cting the resistance thermometer with the module max 20 Q wire Pt100 characteristic acc to EN 60751 A2 OUTPUTS open collector voltageless of OC type with npn transistor maximal load 25 mA range of added voltages 5 24 V d c digital a RS 485 interface transmission protocol MODBUS ASCII 8N1 7E1 701 RTU 8N2 8E1 801 8N1 baud rate 2400 4800 9600 19200 38400 57600 115200 bauds address 1 247 b RS 232 interface transmission protocol MODBUS RTU 8N1 baud rate 9600 bauds address 1 maximal response time to the query frame 300 ms Basic error 0 196 of measuring range Additional error from ambient temperature changes 0 1 of range 10K Measurement time of a single input min 100 ms programmable the sampling frequency of the input is 1 kHz averaged measurement 33 Rated operation conditions supply voltage depending on the execution code 85 253 V a c d c 20 50 V a c d c supply voltage frequency 40 440 Hz ambient temperature 10 23 55 C storage temperature 25 85 relative humidity lt 95 condensation inadmissible preheating time 10 min Sustained overload resistance thermometers 1 measurement of voltage current and resistance 10 Short duration overload 3 s voltage input 10 Un current input 10 In Ensured protection grade acc to EN 60529 through the housing IP 40 electrical connections IP 20 Dimensions 45
17. e system One must program the parameter e Ind Wi 1 e X1W1 4 e Y1W1 0 e X2W1 20 e Y2W1 5 37 e IndW2 1 e X1W2 0 e Y1W2 0 e x2W2 10 e Y2W2 400 e Ind W3 1 e X1W3 4 e Y1W3 0 e X2W3 20 e 2 W3 2000 One must carry out the following formula Q 4s P JUD P 4U P PP And program as follows A 10 squared result from the output 2 B 9 squared result from the output 1 C 11 squared result from the output 3 Operator 1 2 multiplication Operator 2 1 subtraction Operator WF 1 extraction of roots from the function result The reactive power 0 2000 var O 5 will be calculated in the WF register whereas the current 0 5 the result 1 register the voltage 0 400 in the result 2 register and the active power 0 2000 W in the result 3 register Example 5 Programming mathematical function The example is based on the example 4 but instead the calculation of the reactive power one must calculate coso e We program individual characteristic parameters acc to the example 4 however the function must be programmed acc to the formula po PB 0080 id 5 UA We must program e A 3 result from the input 3 power e B 2 result from the input 2 voltage e C 1 result from the input 3 current e Operator1 3 division e Operator2 3 division We have to pay attention to the weight of mathematical operations At first the 38 multiplication and div
18. ented in the section Examples of module programming Operatori Operators of the mathematical function Operator2 bs Value Operator3 E 0 Addition 1 Subtraction 2 Multiplication 3 Division The calculation of the output value is carried out basing on the assumpted operator weight i e At first multiplication and division operations are realised and after addition and subtraction operations and operators and and operators have the same importance weight Examples of using mathe matical functions are presented in the section Examples of module programming WF Mathematical operations on the result Operator of WF function Value 0 Operator switched off 1 Extraction of roots VWF 2 Squaring WF 3 Inverse 1 WF The module at first calculates the function pro grammed by the user and then its result can be submitted to further operations described in this point In the case of the WF operator switching on the final result is situated in the WF register however the result from before this operation is not accessible Input quantity on which the output 1 of OC type has to operate Value Input 1 1 Input 2 W2 Input 3 W3 Input 4 W4 Result of the function WF Recalculated results basing on the individual user s characteristic if it is switched on and basing on programmed mathemat
19. er Supply B5 259 1 20 50 V a c d c on order Acceptance tests without a quality inspection certificate with a quality inspection certificate acc customer s agreement u aus B reete tete X Possible version of a cheaper module with a smaller quantity of inputs Possibility to mix input kinds e g 1 voltage and 3 current inputs Code numbers must be agreed with the manufacturer EXAMPLE OF ORDER When ordering please respect successive code numbers Code SM2 01 1 0 means SM2 2 channel module of analog inputs 01 module with 4 current inputs 0 4 20 mA 1 supply voltage 85 253 V a c d c 8 without a quality inspection certificate 40 10 MAINTENANCE AND WARRANTY The SM2 module does require any periodical maintenance In case of some incorrect operations 1 After the dispatch date and within the period stated in the warranty card One should return the instrument to the Manufacturer s Quality Inspection Dept If the module has been used in compliance with the instructions we warrants to repair it free of charge The disassembling of the housing causes the cancellation of the granted warranty After the warranty period One should send the instrument to repair it in an authorized service workshop Spare parts are available for the period of five years from the date of purcha se Our policy is one of
20. er type only through one inter face port In case of a simultaneous connection of both ports the module will work through the RS 232 interface 5 1 Description of MODBUS protocol implementation The transmission protocol describes ways of the information exchange between devices through serial links The MODBUS protocol has been implemented in the module in accordance with the PI MBUS 300 Rev G specification of the Modicon company Set of parameters of the module serial link in the MODBUS protocol e Module address 1 247 Baud rate 2400 4800 9600 19200 38400 57600 115200 bit s Working modes ASCII RTU 12 e Information unit ASCII 8N1 7E1 701 RTU 8N2 8E1 801 8N1 e Maximal response time 300 ms The parameter configuration of the serial link is described in the further part of the user s manual It consists on establishing the baud rate Rate parameter device address Adr parameter and the information unit type Mode parameter In case of the module connection with the computer through the RS 232 wire the module set automatically following transmission parameters Baud rate 9600 bps Working mode RTU 8N1 Address dE Notice Each module connected to the communication network must e have a unique address different from addresses of other devices connected to the network e identical baud rate and information unit type e the message sent with the address 0 is identified as the data
21. g the sensor with the module input 2 The register is used only in the execution or the resistance or temperature measu rement 28 Resistance value of wires connecting the sensor with the module input 1 The register is used only in the execution for the resistance or temperature measu rement Resistance value of wires connecting the sensor with the module input 1 The register is used only in the execution for the resistance or temperature measu rement Standard Restoration of manufacturer s parameters Value 0 lack of operation 1 Write of manufacturer s parameters Introduction of the value 1 will cause the write of manufacturer s parameters into the module acc to the table 2 Digital quantity any slope of the characteristic Y2 Wi m eem ces YA Wi b characteristic displacement gt 1 Wit x2 Wi Measured value 1 4 X1 Wi value in the module input systems gt Y1 W1 digital value X2 Wi value in the module input of systems gt Y2 W1 digital value Other points of the characteristic are calculated Fig 6 Individual user s characteristic 29 30 Output state Output state 2 E 5 g 5 Output state a nor PrH OC gt PrL OC 1 active OC 0 inactive gt PrLOC Result b nor PrH OC lt PrL OC 1 active OC 0 inactive OC
22. hrough RS 485 one can use the RS 232 port which has constant transmission parameters in case of further problems see the section 2 After changing e RS 485 parameters into the required one one can switch over on RS 485 port The module returns the value 0 on the given input Check if the input which the value 0 is returned on is not switched out and if the averaging time is gt 0 1 8 Check if the user s individual characteristic with zero parameters is not switched on 5 The result in WF regi ster function result is inconsistent with our expectations Check the correctness of the introduced formula Check if the operation sequence is correct The operator weight is essential at first multiplication and division are carried out and next addition and subtraction Perhaps it is sufficient to reorder results in the formula See programming examples in the section 8 In result registers the 20 value is min or max e g in Lumel Energy Check the correctness of the input signal connec tion The 20 value is set when the measured sig nal is beyond the measuring range The recorded 20 value in max and min registers remains till the time of its erasing by the user The value of the measured resistan ce or temperature is overstated Check if correct values of the wires resistance have been introduced to Comp W1 Comp W2 Comp W3 and Comp W4 registers In case of necessity one
23. ical function if the value 4 has been selected and the function is switched on are transmitted to the output In case of choosing the value 4 and switching the mathematical function off the value 0 is transmitted to the output Ww W W 0C1 type ls Output 1 type of type Value Normal Schwitched on Schwitched off Manually schwitched on Manually schwitched off he graphical imaging of the OC type out put operation is presented on the fig 7 0C1 99999 99999 Lower threshold of output 1 OC type operation Prh 0C1 99999 99999 Upper threshold of output 1 type operation he operation delay of the output 1 of OC in seconds he output will be steered up if the alarm active state will be longer than the programmed value Dly 0C1 0 6500 The input quantity on which the output 2 of OC type is to operate Value Resul Resul Resul Resul Result of WF function Recalculated results basing on the individual user s characteristic if it is switched on and basing on programmed mathematical function if the value 4 has been selected and the function is switched on are transmitted to the output In case of choosing the value 4 and switching the mathematical function off the value 0 is transmitted to the output 0C2 type Ls utput 2 type of type Normal Schwitched on Schwit
24. ision are carried out and next the subtraction and addition Since the weight of multiplication and division are the same the first operation in the formula is carried out For this reason the given formula above must be written as and not as P U In the WF register the phase displacement angle will be calculated E 5 U I However the current 0 5 Ain the result 1 register the voltage 0 400 V in the result 2 register and the active power 0 2000 W in the result 3 register Example 6 Programming the OC type input One must program the module such a way that the OC1 output could react on the input 1 and the OC2 output on the input 4 The signal on the input 4 is recounted into temperature 4 mA 0 C 20 mA 100 C The OC1 output is to be actice in the interval 2 4 V and the OC2 output is to be active after exceeding 50 C and be desactivated below 20 C One must program the parameter e Ind W4 1 e X1W4 4 e Y1W4 0 e X2WA 20 e Y2WA 100 e 1 0 e TypOC1 1 e 1 2 e PrhOC1 4 e 2 3 e 2 0 e Pri OC1 20 e Prh OC1 50 The output will operate acc to the fig 7a and the OC2 output acc to the fig 7d 39 9 ORDERING CODES Input signal 4 voltage inputs On NO Ve 00 4 current inputs 2 voltage input 2 current input 0 10 0 4 20 mA EM 4 resistance or Pt100 inputs Pt100 or resistance lt 400 Q 03 on ord
25. o registers beginning from the register with 1DBDh 7613 address Demand Register Number of address registers Number Value for the register Value for the register Checksum Hi Lo Hi Lo of bytes 1DBD 7613 1DBE 7614 CRC 08 03 09 Function Answer Device Register address Number of registers Checksum Function CRC address Hi Lo Hi Lo 01 03 1D BD 00 02 52 43 14 Report identifying the device code 11h Demand Device address Function Checksum CRC 01 11 Answer Device address Function Number of bytes Device state Device identifier Field depending on the device type x 11 Device address Function Number of bytes Device identifier Device state Field depended of the device Output of OC type Type of input Number of the software version Checksum Example 08 89 FF depends the set value function number 11 0x08 0x89 OxFF XXXXXX 0 01 2 outputs of OC type 01 XXXXX Field depended on the module execution code 0x00 four 0 10 voltage inputs X 00 X XXX 0x01 four 0 4 20 mA current inputs X 01 XX XX 0x02 two 0 10 voltage inputs two 0 4 20 mA current inputs 2 0 03 four Pt100 inputs or four resistance inputs up to 4000 X 03 X XXX software version implemented in the module XX _4 byte variable
26. o the regulation and instructions given in this user s manual Ensure proper handling and avoid mechanical stress Do not bend any components and do not change any insulation distances Do not touch any electronic components and contacts Modules may contain electrostatically sensitive components which can easily be damaged by inappropriate handling Do not damage or destroy any electrical components since this might endanger your health 4 Electrical connection Before switching the module on one must check the correctness of connection to the network In case of the protection terminal connection with a separate lead one must remember to connect it before the connection of the module to the mains When working on live modules the applicable national regulations for the prevention of accidents must be observed The electrical installation must be carried out according to the appropriate regulations cable cross sections fuses PE connection Additional information can be obtained from the user s manual Apply a two wire cable for the connection to the network acc to the EN 61010 1 standard Do not connect the module to the network through an autotransformer In the building installation a cut out or a circuit breaker should exist situated near the device and easy accessible to the operator It should be marked as the element switching the device out e The documentation contains information about installation in compliance wi
27. of float 2 bytes in case of work in RTU mode 1 byte in case of work in ASCII mode Work RTU mode e g Mode RTU 8N2 value 0x02 in case of readout write through the interface The device address is set on Adr 0x01 15 For the SM2 module the answer frame has the following shape Device A Device Field depending on address Function identifier the device type 01 11 89 It is the SM2 module with two OC type outputs with four 0 4 20 mA current inputs software version 1 00 5 3 Register map Register map of SM2 series modules Address Value type Description range 7000 7200 float 32 bit The value is placed in two successive 16 bit registers Registers contain the same data as 32 bit registers from the area 7500 The register is for readout only 7200 7400 float 32 bit The value is placed in two successive 16 bit registers Registers contain the same data as 32 bit registers from the area 7600 Registers can be read out and written 7500 7600 float 32 bit The value is placed in the 32 bit register The register is for readout only 7600 7700 float 32 bit The value is placed in the 32 bit register Registers can be read out and written 16 5 4 Registers only for readout Quantity name The value is located in two successive 16 bite registers These registers include the same data as 32 bite registers Write w Readout r from the area 7500 The value is pl
28. on 1 individual characteristic switched off Bit 1 Individual characteristic of the input 2 0 individual characteristic switched on 1 individual characteristic switched off Bit 0 Individual characteristic of the input 1 0 individual characteristic switched on 1 individual characteristic switched off Description of the Status 2 register o a e gt 2 o o r e 5 15 a 5 5 2 2 3 S g E 9 9g Ss gs 5 S Z Z 92 74 Uv o o o o ES 2 N o E sl w Pc 5 518 51818 ao 5 5 og EE bis15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 MSB LSB Bit 15 Empty Bit value is always equal 0 Bit 14 Output 2 state of OC type 0 OC switched off 1 OC switched on 19 Bit 13 Output 1 state of OC type 0 OC switched off 1 OC switched on Bit 12 State of measuring input 4 0 input switched off lack of measurement 1 input switched on Bit 11 State of measuring input 3 0 input switched off lack of measurement 1 input switched on Bit 10 State of measuring input 2 0 input switched off lack of measurement 1 input switched on Bit 9 State of measuring input 1 0 input switched off lack of measurement 1 input switched on Bit 8 6 Working mode and information unit 000 interface switched off 001 8N1 ASCII 010 7E1 ASCII 011 701 ASCII 100 8N2 RT
29. th EMC shielding grounding filters and cables These notes must be observed for all CE marked products e The manufacturer of the measuring system or installed devices is responsible for the compliance with the required limit values demanded by the EMC legislation 5 Operation e Measuring systems including SM1 modules must be equipped with protection devices according to the corresponding standard and regulations for prevention of accidents e After the instrument has been disconnected from the supply voltage live components and power connections must not be touched immediately because capacitors can be charged e The housing must be closed during operation The RS 232 socket serves only to connect the device Fig 5 working with the MODBUS protocol When the module is not used place the hole plug in the RS 232 socket of the module 6 Maintenance and servicing Please observe the manufacturer s documentation Read all product specific safety and application notes in this user s manual Before taking the module out one must turn the supply off e The removal of the module housing during the warranty contract period may cause its cancellauun 4 INSTALLATION 4 1 Way of fixing The SM2 module is fixed on a 35 mm rail in accordance with EN 60715 The module housing is made of a self extinguishing plastic Overall dimensions of the housing 45 x 120 x 100 mm One must connect to the module external wires with cross sec
30. the measuring input 2 Value 0 Measuring input switched off 1 Measuring input switched on In case of the input off the value 0 is returned Input 2 type Range of changes as for the W1 type Measurement averaging time of the input 2 Range of changes as for the Cnt W1 type Individual characteristic of the input 2 99999 99999 Value 0 off 1 on Parameters of the individual characte ristic of input 2 99999 99999 99999 99999 99999 99999 The range changes as for X1 W1 Y1 W1 X2 W1 Y2 W1 Switching ON OFF the measuring input 3 Value 0 Measuring input switched off 1 Measuring input switched on In case of the input off the value 0 is returned Input 3 type 0 10V SM2 00XXX execution 0 4 20 mA or SM2 01XXX execution SM2 02XXX execution 0 Pt100 Resistance lt 400 Notice The range change of this parameter depends on the execution code Measurement averaging time of the input 3 Range of changes as for the Cnt W1 type Individual characteristic of the input 3 99999 99999 Value 0 off 1 on Parameters of the individual characte ristic of input 3 99999 99999 99999 99999 99999 99999 The range changes as for X1 W1 Y1 W1 X2 W1 Y2 W1 Switching ON OFF of the measuring input 4
31. the variable signal The module is working with transducers of variable signal into a standard signal e g P11Z transducer The measurement of max current 1200 A 0 gt 4 mA 1200 A gt 20 mA measurement of max voltage 400 V OV gt 0 V 400 V gt 10 V 36 One must program the parameter e IndW1 1 e 1 1 4 e Y1W1 0 e 2 1 20 e Y2W1 1200 e Ind W2 7 1 e X1W2 0 e Y1W2 0 e X2W2 10 e Y2W2 400 one must carry out the following equation S U I 1 result from input 1 e 2 result from input 2 e Operator 1 2 multiplication The apparent power 0 480 000 VA will be calculated in the WF register whereas the 0 1200 A current in the result register 1 and the 0 400 V voltage in the result register 2 Example 4 Programming mathematical function The module is working with On the input 1 gt a c current transducer on standard signal e g P11Z Current measurement on the 5 A range transducer characteristic gt O gt 4 mA gt 20 On the input 2 gt voltage transducer on standard signal 9 P11Z Voltage measurement on the 400 range transducer characteristic gt 0 V gt 0 V 400 V 2 10 V On the input 3 gt active on standard signal e g P34P or PP84 Active power measurement on the 2000 W range transducer characteristic 0 gt 4 mA 2000 W gt 20 mA Its task is to transmit voltage current and reactive power values to th
32. tion up to 2 5 mm Overall dimensions and the fixing way are presented on the fig 2 41 NOD A A h SE a pa a RS 232 RS 485 Y Ll gt N Lock 100 gt Fig 2 Overall dimensions and way of fixing the module 4 2 External connection diagrams Make the connection of input signals supply a Ress i i o ype 5 and interface acc to the fig 3 4 and 5 Supply 52 BGNDA B al 9 10 11 12 13 1415 16 5 2 1 2 3 4 5 6 7 8 Fig 3 Connection way of external signals The connection diagram is also placed on the module housing Inputs signals The polarization is optional when supplying by d c voltage Measured signal 4 voltage inputs 4 current inputs 4x0 10V 4 x 0 4 20 mA 5 1121314 5 161718 11213 4 15 67 8 S4 d 444432 453435 2595 259 5 Toc o 12 1 2 e 2 xm oum um 2 o 2 j a s E E E E Measured signal 4 resistance thermometer inputs 2 voltage inputs 2 current inputs in 2 wire system or resistance measurement 2x0 10V 2x 0 4 20 mA gt 1 12 3 4 5 6 7 8 5 7 c 1 2 3 4 5 6 7 8 l J o ei BEBEBE Toc ool Rol 5 N e N e
33. ule there is a connecting cable to connect with the PC computer RS 232 The SM2 module realises following functions e mathematical operations on channels and between measuring channels conversion of measured or calculated quantities basing on the individual linear characteristic e storage of maximal and minimal values for each channel programming of the measurement averaging time independently for each channel e handling of RS 485 and RS 232 interfaces in MODBUS protocol both in ASCII and RTU mode change of the OC type output state basing on set alarm values o o o o o SM2 RxD O TxD O RS 232 Z RS 485 connection connection RS 232 RS 485 Fig 1 View of the SM2 module o o o o o o o o 2 SET OF THE 5 2 MODULE The set consists of an user s manual warranty card plug with screw terminals hole plug of the RS 485 and RS 232 sockets RS 232 cable to connect to the computer 1 5 m When unpacking the module please check whether the type and execution code on the data plate correspond to the order 3 BASIC REQUIREMENTS SAFETY INFORMATION Symbols located in this service manual mean WARNING Warning of potential hazardous situations Especially important One must acquaint with this before connecting the module The non obser
34. vance of notices marked by these symbols can occa sion severe injuries of the personnel and the damage of the module CAUTION Designates a general useful note If you observe it handling of the module is made easier One must take note of this when the module is working inconsistently to the expectations Possible consequences if disregarded In the security scope the module meets the requirements of the EN 61010 1 standard Remarks concerning the operator safety N 1 General e The SM2 module is destined to be installed in measuring systems Non authorized removal of the required housing inappropriate use incorrect installation or operation create the risk of injury to personnel or damage to equipment For more detailed information please study the user s manual All operations concerning transport installation and commissioning as well as maintenance must be carried out by qualified skilled personnel and national regulations for the prevention of accidents must be observed According to this basic safety information qualified skilled personnel are persons who are familiar with the installation assembly commissioning and operation of the product and who have qualifications necessary for their occupation 2 Transport storage Please observe the notes on transport storage and appropriate handling Observe the climatic conditions given in Technical Data 3 Installation The module must be installed according t
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