Serial to analog converter
Contents
1. Sends several values to the internal channels 1 to 4 give the first and the last Maximum of 8 values can be sent with one command channels 1 9 can be accessed this way The values are separated with one or more spaces MN xxxxx Commands used by the Mekuwin configuration software N XXxxx Nopsa commands encapsulated in SCL See chapter Nopsa MODBUS PROTOCOL Commands 3 Read Holding Registers read current configuration e 6 Write Single Register change the configuration and control the outputs e 16 Write Multiple registers change several registers e 17 Report Slave ID device type query e 109 Meku Mekuwin uses this e 110 Nopsa Nopsa commands Maximum Modbus frame is 100 bytes Command 17 returns 0x11 lt bytecount gt 0x00 OxFF and then 7470 V2 0 A123456 for example Data types e BOOL Off On setting O off 1 on on the lower byte e BYTE Single byte value Only the lower least significant byte used e WORD 16 bit value Most significant byte first e ENUM List of options e FLOAT 32 bit floating point IEEE 754 Least significant word first Inside the word most significant byte first Holding registers The analog outputs can be controlled via registers 0 7 in IEEE 754 format or alternatively via registers 1000 1003 in regular 16 bit signed integer format These correspond to the internal registers 1 4 see page 5 The configuration settings are accessible in regis2. 5 Addr BYTE Unsigned 0 255 Value Baud 2095 Conf Ser Master Put 5 First BYTE Unsigned 0 255 0 300 2096 Conf Ser Master Put 5 Num BYTE Unsigned 0 8 1 600 2097 Conf Ser Master Put 6 From BYTE Unsigned 1 32 2 1200 2098 Conf Ser Master Put 6 Addr 9 BYTE Unsigned 0 255 3 2400 2099 Conf Ser Master Put 6 First BYTE Unsigned 0 255 4 4800 2100 Conf Ser Master Put 6 Num BYTE Unsigned 0 8 5 9600 2101 Conf Ser Master Put 7 From BYTE Unsigned 1 32 6 19200 2102 Conf Ser Master Put 7 Addr_ BYTE Unsigned 0 255 2103 Conf Ser Master Put 7 First BYTE Unsigned 0 255 Table E4 2104 Conf Ser Master Put 7 Num BYTE Unsigned 0 8 2105 ConfiSer Master Put 8 From BYTE Unsigned 1 32 Value Parity 2106 Conf Ser Master Put 8 Addr 9 BYTE Unsigned 0 255 0 SEA 2107 Conf Ser Master Put 8 First BYTE Unsigned 0 255 1 801 2108 Conf Ser Master Put 8 Num BYTE Unsigned 0 8 2 ome Table E5 Value Parser 0 Classic 1 Custom ASCII MODE Some weighs and weather transmitters are able to output their readings in Ascii which means human readable data terminated by a cr or If or both 7470 can receive and interpret most of this kind messages The transmitter has to be configured to send its readings automatically 7470 does not send query commands 7470 will not respond to Ascii packets Several 7470 s can be parallel connected to a RS 485 bus to receive the Ascii messages Each one can be configured to handle a different
3. Floating point format only supported 2 3 Information on the outputs 15 Outputs Channels Isolation mA output Ranges Accuracy at 25 C Operating range Maximum load V output Ranges Serial ports Buses Protocol Baud rates General Temp stablility DA conversion Supply voltage Curr consumption Dimensions SPECIFICATIONS 4 outputs Non isolated from each other and power Common negative wire 0 20mA and 4 20mA 0 1 of range 0 22mA typ 600 ohms 0 5V and 0 10V RS 232 RS 485 Nokeval SCL Ascii Modbus RTU 300 19200 bauds Accuracy at 25 C Operating range Maximum load 0 1 of range 0 11 1V typ 5 kilo ohms Shortcircuit protect yes 15mA Response time Output reaction time 0 40ms Output timing Response time Termination 4 7ms reaction 0 40ms 67 of end value 12 5ms reaction 0 40ms 93 of end value 150ms reaction 0 40ms 100 of end value 1 5 ms Externally with a resistor or internally with a jumper 16 50ppm C of range Oper temperature 0 55 C 12 bits resolution 4096 Protection IP20 18 28VDC Attachment 35 mm DIN rail 30mA 110mA Weight 140g 70 58 a a c A 000000000000 aa A S 8 y y O00000 000000
4. of its own Only the slaves use an address Every slave must be configured to a different address Fetching Fetching means ae Ser Fetch querying values from other devices on the Ch 1 Mode Groups bus These devices are Ch2 Baud 1 1 most often AER Ch 3 Parity 2 Addr measuring temperature voltage current etc ha nes duu Also Nokeval Ser Parser 4 um RTR970PRO radio String Master 5 receiver can be read Stime Fetch 6 The fetch operations DelayResp Put 7 are configured in the Master 8 menu Ser Master Fetch There may be up to eight fetch groups One group corresponds to one serial command sent to another bus device and it may fetch up to eight values The first setting Groups is used to select how many fetch groups are needed Within each group there is three settings Addr defines the serial bus address of the other device First tells from which channel to read on the other device and Num tells how many channels to read The values fetched with group 1 are stored in the internal channels 1 onwards The values fetched with group 2 are stored in the next free internal channels etc E g if group 1 fetches 4 channels Putting 7470 is able to send or put the fetched values to other devices on the bus E g one 7470 can read 16 channels from a temperature transmitter and then deploy the values to other 7470 s to have mor
5. to be able to have several analog outputs following the same internal channel Internal channels gt From t n Analog output Range The analog output range selection Options are 0 20mA 4 20mA 0 5V 0 10V Lo Hi Analog output scaling When the channel value controlling the analog output corresponds to the Lo setting the output will give its low end signal e g 4 mA if the range is 4 20mA Likewise the value of Hi will give the high end signal Limit Limits the analog output within the nominal range If enabled the analog output will not exceed its end Ser submenu Mode Serial bus protocol and mode e SCL slave Nokeval SCL protocol 7470 may be controlled using SCL commands like OUT CH and OUT SCAN See chapter SCL protocol e Modbus Modbus RTU protocol 7470 may be controlled using write holding register and write multiple registers functions All the configuration settings are also accessible See chapter Modbus protocol e Ascii 7470 accepts simple messages with no proprietary protocol The messages has to end with cr If or both See chapter Ascii mode e SCL Master 7470 acts as a serial bus master sending commands to the other devices on the bus Only one device should be a master ona single bus In this mode 7470 can read serial bus transmitters and Nokeval RTR970PRO radio receiver without a PC or another master See chapter SCL Master e Metso HART Hart style pro
6. 0 255 2074 Conf Ser Master Fetch 8 First BYTE Unsigned 0 255 2075 Conf Ser Master Fetch 8 Num BYTE Unsigned 0 8 2076 Conf Ser Master Put Groups BYTE Unsigned 0 8 Table E1 2077 Conf Ser Master Put 1 From BYTE Unsigned 1 32 2078 ConfiSer Master Put t Addr_ BYTE Unsigned 0 255 Value Range 2079 Conf Ser Master Put 1 First BYTE Unsigned 0 255 Q Or 2080 Conf Ser Master Put 1 Num BYTE Unsigned 0 8 1 Glee 2081 Conf Ser Master Put 2 From BYTE Unsigned 1 32 2 020M 2082 Conf Ser Master Put 2 Addr BYTE Unsigned 0 255 2 SACMA 2083 Conf Ser Master Put 2 First BYTE Unsigned 0 255 2084 ConfiSer Masten Put2 Num BYTE Unsigned 0 8 Table E2 2085 Conf Ser Master Put 3 From BYTE Unsigned 1 32 Value Mode 2086 Conf Ser Master Put 3 Addr BYTE Unsigned 0 255 0 SCL 2087 Conf Ser Master Put 3 First BYTE Unsigned 0 255 1 Modbus 2088 Conf Ser Master Put 3 Num BYTE Unsigned 0 8 2 Ascii 2089 Conf Ser Master Put 4 From BYTE Unsigned 1 32 3 SCL Master 2090 Conf Ser Master Put 4 Addr_ BYTE Unsigned 0 255 4 Metso Hart 2091 Conf Ser Master Put 4 First BYTE Unsigned 0 255 2092 Conf Ser Master Put 4 Num BYTE Unsigned 0 8 2093 Conf Ser Master Put 5 From BYTE iad 1 32 Table E3 2094 Conf Ser Master Put
7. 0 baud insert a small flat bladed screwdriver between the top grey and bottom black parts of the Jumper J2 engages the RS 485 termination It enclosure at each side and pull the top part off should be closed if this device is the last on the bus otherwise open Configuring The 7470 can be configured with a PC or with a hand held programmer PC configuration The configuration settings are accessed with a software called MekuWin available free of charge The configuration settings may be accessed via the RS 232 or RS 485 buses or via the 3 5mm POL connector on the front panel To use the POL connector use a POL RS232 cable or DCS772 USB to POL cable When the 7470 is configured for SCL slave mode it can be accessed via any port straight away This is the factory default In other modes than SCL slave a plug has to be plugged to the POL connector on the front panel to revert the 7470 to the SCL slave mode The plug will also change the baud rate to 9600 and make the 7470 to respond in any bus address The plug may be the plug of the programming cable or any 3 5mm mono plug When the plug is pulled off 7470 will start using the protocol defined in the configuration menu The configuration menu contents are described in the chapter Configuration menu How to use MekuWin see its manual Hand held programmer An alternative to the PC programming is to use a hand held programmer 6790 It is plugged to t
8. E a aeaa a ANA E E e A E RENA EAE OE Laa p Eaa 12 M tso Hantaan aer adea auc ved a3 EE chee oes a Ea Aaa e era te sank as Sae pE aaaea 14 NOpSa ieaiaia aa a deiae aaae a aa eaaa Aaaa aTa eaaa da aana eeri a araa a n E aeda an dda 15 Specifications ccecccccccccccceeeeeeeeceeeeeeeeeeeeeeeaeaaeeaeeeeeeeeeeaaaaeeaeeeeeeeeesseeecnaaeeeeeeeeeeeseeceeeeeeeeeeessesseseeeeseeee AO Manufacturer Nokeval Oy Tel 358 3 3424800 Yrittajakatu 12 FIN 37100 Nokia Finland Fax 358 3 3422066 WWW www nokeval com GENERAL Mounting This transmitter is intended to be mounted on a 35 mm DIN rail Connections D1 A 1 13 mA RS 485 DO B 2 141 _____ Com Output 1 Ch1 Com 3 15 v RX 4 16 mA F RS 232 Com 5 17 Com f Output 2 Ch2 TX 6 1B v 7 19 em 8 W com Output 3 Ch3 9 2i v 10 22 _ mA Supply voltage 11 23L Com Output 4 Ch4 24 VDC _12 24 v The green connector blocks are detachable to make connecting easier They accept up to 2 5mm wires Jumpers Baud rate configured on menu settings Baudrate fixed to 9600baud RS 485 Non terminatec Bo EE RS 485 Terminated Jumper J1 should be normally open It is closed To access the jumpers the enclosure has to be when the 7470 baud rate is not known to force opened Detach the converter from the DIN rail and 960
9. F 01 00 00 00 CE 10 40 00 00 00 40 co 00 00 41 40 00 00 41 co 00 00 B2 rPream D Mf T D C Bel Out 2 Oua 4 Ows 8 Ou4 16 LP Mf six lowest bits of manufacturer id and most significant bit set for primary master T device type always 01h ID 000000h the address selected in the configuration C command Bc byte count LP longitudinal parity The device will respond 5xFF 86 AF 01 oo 00 00 CE 02 oo OO E4 Pream D m T c Be st 2 LP Possible errors are e Longitudinal parity error status bytes 88 00 in hexadecimal Command not implemented 40 00 If the analog outputs are requested to go outside their range they will go as far they can Limit off or tho the end of the range Limit on No error is given 14 NOPSA Nopsa is a simple language intended for data interchange between devices The data is transferred in binary format making it ideal for machine to machine communications 7470 allows Nopsa commands to be sent over SCL and Modbus protocols Nopsa is specified in a separate document available on request This device supports the following Nopsa commands 1 0 Type query returns 7470 1 1 Software version query returns V2 0 1 2 Serial number query returns A123456 1 3 Description query returns Analog output unit 1 32 Meku configuration commands over Nopsa 2 2 Control the analog outputs
10. User manual 22 1 2007 V2 0 7470 Serial to analog converter Nokeval INTRODUCTION 7470 is a serial bus controlled analog output unit It provides four mA or V outputs that can be controlled via an RS 232 or RS 485 bus As a slave it supports Nokeval SCL Modbus RTU and Ascii protocols Alternatively it can function as a SCL Master querying other devices How to use this manual The chapter General shows how to mount and connect this device It also tells how to access the configuration settings The settings itself are Table of contents Analog output ranges include 0 20mA 4 20mA 0 5V and 0 10V 7470 needs 24 VDC supply voltage The analog outputs are not galvanically isolated from the power supply or each other They share the common negative wire However the serial bus is galvanically isolated described in chapter Configuration menu Each of the available serial modes are described in the chapters of their own Introd ctiO Niine a a a aa ghia casted duane caveat ised aeaa aa a eai 2 Generalerna nann a e E a a e E E E e a a a aE 3 CONnfigUration MenMUssssreseiciirerrsn nineta E enna E EEEE ENAT ENEAN EENE AN Ea EEEE EEANN EEEa 5 SC ORO CO heien en a ea a Aiea ty oat ea eaa aE raaa i E a Ae T MOdbUS PrOtOCOl vis sies sates ccvspsaceeicedectes eaa a N aeaa a aiaia a eai vsnedevdde ced ER a 8 ASci MOJE isskirtine eieaa aa ea da aae aaa a ea a a Dae eA ai aria aaaea a fata eadera 10 SCL MaStef enea aE
11. ains non numerical characters when the picking starts they will be ignored until a numerical character is encountered any other Match packets used If the parser string contains other characters the input string must have equivalent characters or the parser will exit This feature can be used to pick a certain type of packet if the transmitter sends several different When the parser exits all the fields handled before exiting will be still Some examples will clarify things up Simple message Consider a message like 10 20 30 40 To read this in enter a parser string 1 oe N ra oe w oe db A comma separated message could be handled by the classic parser too Custom delimiter If the message is separated delimited with e g slashes like this 10 20 30 40 lt cr gt The parser string that can interpret this to the four first channels 1 2 3 4 If the delimiter is or or it can t be mentioned directly in the parser string because those characters have a special meaning to the parser They must be escaped by preceding them with a A message separated by s would be handled by a parser string like this CO CLO CIO O46 Ignoring fields If we have a message like 10 20 30 40 50 60 70 80 And want to read in the third and fifth field only enter the following parser string 11 31 2 Ignoring characters Consider a message W 10 H 22 L 50 T
12. e than 4 analog outputs Up to eight put groups may be defined Each group corresponds to one serial command sending up to eight values to another device on the bus 12 and group 2 fetches another 4 the values will be placed in internal channels 1 4 and 5 8 respectively The fetches may be configured freely It is allowed to do several fetches from the same bus device e g to fetch more than 8 values from a 16 channel transmitter Every time a fetch is done successfully the safety timers of the updated internal channels are reset If some channel is not updated for a time specified in Stime setting in the Ser submenu that channel will be considered expired If an analog output is following that channel it will be pulled to 0 mA or 0 The first setting Groups is used to define how many put groups are needed Within each group there is four settings Addr defines the bus address of the other device First tells the first channel on the other device that the valueas are sent to Num tells how many values to send From defines the internal channel of this 7470 that provides the first value to be sent For example if configured as follows e From 5 e Addr 2 First 1 e Num 4 The mastering 7470 will send values from its internal channels Conf Ser Put C
13. h 1 Mode Groups Ch2 Baud 1 1 Ch3 Parity 2 From Ch4 Addr 3 Addr Ser Parser 4 First String Master 5 Num Stime Fetch 6 DelayResp Put 7 Master 8 5 8 to the channels 1 4 of the device on bus address 2 If some internal channel has expired dashes will be sent to indicate fault 13 METSO HART 7470 can be controlled using the Hart protocol on RS 485 bus Supported command set is minimalistic commands 0 and 206 As always with Hart odd parity 801 is used 7470 accepts only the long address not the polling address Manufacturer ID is 47d or 2Fh Valmet Metso Device type byte is 01h The two most significant bytes of the address are zero and the least significant is selectable on the configuration menu Ser Addr selectable 0 127d This device needs 2 preambles and sends 5 Command 0 Read Unique Identifier This command is useful to see the device exists on the bus Command 206 Controlling the outputs The analog outputs are controlled with this command After the command byte 206d or CEh comes one byte indicating the number of data bytes It may have the following values e 04h control the output 1 only e 08h control the outputs 1 2 e OCh control the outputs 1 3 e 10h control the outputs 1 4 After that comes 32 bit floating point numbers in IEEE754 format the most significant or exponent byte first An example of the whole frame in hexadecimal FF FF 82 A
14. he POL connector on the 7470 front panel The menu contents are described in the chapter Configuration menu How to use 6790 see its manual Note 6790 is not able to edit string type settings so it can not be used to edit the custom Ascii parser configuration string CONFIGURATION MENU Conf Ch 1 Fetch Ch 1 From Groups Ch2 Range 1 E 1 Ch3 Lo 2 Addr Ch4 Hi 3 First Ser Ser Limit 4 Num Mode 5 Baud 6 Parity 7 Addr 8 Parser Put String Groups Stime DelayR f 1 elayRes i 2 From Master Master 3 Addr Fetch 4 First Put 5 Num 6 7 8 The menu is arranged hierarchically The first level contains four submenus one for each analog output and a serial communications submenu Some of the settings are hidden when they are not used Ch submenus Serial bus OUT CH 1 100 Each analog output is configured independently From 7470 contains 32 internal channels storing the variable values sent via a serial bus The channels are numbered 1 32 The From setting is used to select which internal channel is used to control this analog output Most often the values are sent to internal channels 1 4 and the first analog output channel follows the first internal channel etc However some times it may be useful
15. le E4 2031 Conf Ser Addr BYTE Unsigned 0 127 2032 Conf Ser Parser ENUM See table E5 2033 2048 Conf Ser String STRINGZ Len 32 2049 Conf Ser Stime BYTE Unsigned 0 60 2050 Conf Ser DelayResp BOOL 2051 Conf Ser Master Fetch Groups BYTE Unsigned 0 8 2052 Conf Ser Master Fetch 1 Addr BYTE Unsigned 0 255 2053 Conf Ser Master Fetch 1 First BYTE Unsigned 0 255 2054 Conf Ser Master Fetch 1 Num BYTE Unsigned 0 8 2055 Conf Ser Master Fetch 2 Addr BYTE Unsigned 0 255 2056 Conf Ser Master Fetch 2 First BYTE Unsigned 0 255 2057 Conf Ser Master Fetch 2 Num BYTE Unsigned 0 8 2058 Conf Ser Master Fetch 3 Addr BYTE Unsigned 0 255 2059 Conf Ser Master Fetch 3 First BYTE Unsigned 0 255 2060 Conf Ser Master Fetch 3 Num BYTE Unsigned 0 8 2061 Conf Ser Master Fetch 4 Addr BYTE Unsigned 0 255 2062 Conf Ser Master Fetch 4 First BYTE Unsigned 0 255 2063 Conf Ser Master Fetch 4 Num BYTE Unsigned 0 8 2064 Conf Ser Master Fetch 5 Addr BYTE Unsigned 0 255 2065 Conf Ser Master Fetch 5 First BYTE Unsigned 0 255 2066 Conf Ser Master Fetch 5 Num BYTE Unsigned 0 8 2067 Conf Ser Master Fetch 6 Addr BYTE Unsigned 0 255 2068 Conf Ser Master Fetch 6 First BYTE Unsigned 0 255 2069 Conf Ser Master Fetch 6 Num BYTE Unsigned 0 8 2070 Conf Ser Master Fetch 7 Addr BYTE Unsigned 0 255 2071 Conf Ser Master Fetch 7 First BYTE Unsigned 0 255 2072 Conf Ser Master Fetch 7 Num BYTE Unsigned 0 8 2073 Conf Ser Master Fetch 8 Addr BYTE Unsigned
16. o ignore the letters and the equivalent signs this kind of parser string can be used 2291 2232 22 3 Or if we want to be sure the letters and equivalent signs are there and they are correct W 1 H 2 L 3 Note since 7470 is able to ignore the non numerical characters within the field the message can be read in with this simple parser string 31 2 3 Addressing If the transmitter sends several different types of messages and we want to accept only one of them we have to insert some fixed characters in the beginning of the parser string An example the transmitter sends alternately two packets 0 10 20 1 30 40 If we want to accept the latter message only we enter the parser string this way 1 1 2 Now when the transmitter sends a message 0 10 20 the parser will reject it because it does not match 1 mentioned in the parser string SCL MASTER When there is no PC or any other device available that could master the bus i e command the bus devices one 7470 can be configured to act as a master It can read values from other devices on the bus and redirect them to another devices The four analog outputs of the mastering 7470 are available too There must always be exactly one master on the bus If there is no master at all all the devices listen only If there is two or more masters they will collide The master does not have an address
17. part of the message Ascii mode does not use any addressing nor checksum However some addressing may be realized with the custom parser see below Classic parser If the message is simple like this 100 0 200 0 300 0 400 0 lt cr gt lt 1f gt 7470 is able to handle it with the classic parser The fields may be separated with one comma one semicolon one tabulator or one or more spaces If there is non numerical characters within the field 7470 will ignore them until a numerical character 0 9 minus decimal point is encountered It will then read in the figure until a field separator or any other non numerical character is encountered So 7470 is able to read this message Custom parser If the message is not field separated delimited by a comma space semicolon or tabulator the custom parser has to be used Also if the transmitter sends several different types of packets and only one of them is to be picked by a certain 7470 the custom parser is needed The custom parser is configured with one string that contains instructions to 7470 how to handle 10 Ascii packets can be sent with any terminal software e g HyperTerminal supplied with Windows 7470 expects 8 data bits and none parity 8N1 but it discards the most significant bit So it accepts 7E1 and 701 too but does not check the parity There is two parsers algorithms that split the Ascii message to fields and tries to find numerical values the
18. re classic and custom The classic parser does not allow any configuration but it is simple to use It can be used when the message contains values separated by spaces commas semicolons or tabulators When more control is needed the custom parser gives more freedom A 100 0 B 200 0 C 300kg D 400m2 E 0 Reading of 100 0 is read to the internal channel 1 200 0 to channel 2 etc m2 is ignored because one numeric portion has been already found in that comma separated field The maximum length of a message is 100 characters Up to 32 fields may be read in to the internal registers The analog outputs can be programmed to follow any of these internal registers the message The parser string consists of the following parts Part Name Description Replace string Any number of characters in the message will be ignored until a character following the is encountered in the message E g will ignore all characters in the message until a is found The will be ignored too Replace character One character will be ignored in the message Several s may be used contiguously to ignore more characters 1 Pick be ignored then Picks a value to the internal channel 1 from the message Will pick until a character following the 1 is encountered in the message E g 1 will pick characters until a comma is found in the message The comma will The channel number may be 1 32 If the message cont
19. seconds in 1 second steps To disable the safety timers set value of 0 here DelayResp Applies to SCL slave mode only When some other device sends a SCL command to the 7470 it will process the command and send a response as soon as possible but not earlier than 3 5 characters time from the end of the command At 9600 baud this minimum time corresponds to 3 6 ms If DelayResp is engaged the interval between the command and response is increased to 25 ms Master The submenu used to configure how this device acts as a SCL Master See chapter SCL Master SCL PROTOCOL A more detailed description of the Nokeval SCL protocol can be downloaded from Nokeval WWW site This unit understands the following SCL commands TYPE Returns the model name and software version 7470 V2 0 without the quotation marks SN Returns the serial number e g A123456 OUT CH 1 100 0 Sends a value of 100 to the internal channel 1 Channels 1 9 are writable this way although normally up to four of them are used since 7470 has four analog outputs About internal channels see the From setting on page 5 7470 will return an empty response ACK ETX BCC Acceptable characters are 0 9 minus decimal point and leading or trailing spaces A deliberately invalid value NaN can be expressed as several minus chars to steer the analog output to 0 V or 0 mA to indicate something is wrong OUT SCAN 1 4 10 20 30 40
20. ter 2000 onwards When the configuration is changed the changes are automatically stored in the EEPROM If the serial configuration is changed via Modbus the new settings do not affect until powered down Register Name Type Values 0 1 Ch1 FLOAT Signed 2 3 Ch2 FLOAT Signed 4 5 Ch3 FLOAT Signed 6 7 Ch4 FLOAT Signed 1000 Ch1 WORD Signed 1001 Ch2 WORD __ Signed 1002 Ch3 WORD __ Signed 1003 Ch4 WORD __ Signed 2000 Conf Ch 1 From BYTE Unsigned 1 32 2001 Conf Ch 1 Range ENUM See table E1 2002 2003 Conf Ch 1 Lo FLOAT Signed 2004 2005 Conf Ch 1 Hi FLOAT Signed 2006 Conf Ch 1 Limit BOOL 2007 Conf Ch 2 From BYTE Unsigned 1 32 2008 Conf Ch 2 Range ENUM See table E1 2009 2010 Conf Ch 2 Lo FLOAT Signed 2011 2012 Conf Ch 2 Hi FLOAT Signed 2013 Conf Ch 2 Limit BOOL 2014 Conf Ch 3 From BYTE Unsigned 1 32 2015 Conf Ch 3 Range ENUM See table E1 2016 2017 Conf Ch 3 Lo FLOAT Signed 2018 2019 Conf Ch 3 Hi FLOAT Signed 2020 Conf Ch 3 Limit BOOL 2021 Conf Ch 4 From BYTE Unsigned 1 32 2022 Conf Ch 4 Range ENUM See table E1 2023 2024 Conf Ch 4 Lo FLOAT Signed 2025 2026 Conf Ch 4 Hi FLOAT Signed 2027 ConfiCh 4 Limit BOOL 2028 Conf Ser Mode ENUM See table E2 2029 Conf Ser Baud ENUM See table E3 2030 Conf Ser Parity ENUM See tab
21. tocol See chapter Metso HART Baud Baud rate 300 19200 All the devices on the bus must have the same baud rate Factory default is 9600 Parity Applicable for Modbus only Options e 8N2 e 8E1 recommended factory default e 801 Addr Serial bus address of this device in SCL slave Modbus and Metso HART modes In SCL mode legal values are 0 123 Inaddition to the selected address 7470 will always respond in address 126 When the POL plug is inserted in the front panel 7470 will respond in any address points e g the 4 20mA output will not go below 4 mA nor above 20 mA even if requested to If the safety timer expires the output will go to 0 mA or 0 V despite of this setting e In Modbus mode legal values are 1 247 In HART mode legal values are 0 127 Parser Parser selection in Ascii mode Options are e Classic Non configurable parser equivalent to 7470 firmware versions 1 x e Custom Configurable parser See chapter Ascii mode String Parser configuration string in Ascii mode when Custom parser is selected See chapter Ascii mode Stime Safety timer Defines a safety time in seconds If some of the internal channels see Ch From on page 5 is not refreshed within this time the safety timer will expire on that channel An analog output configured to follow that channel will then go low 0 V or mA This works in every mode The time can be selected from 1 to 60
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