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ЕТ-485    

 

                                                                                                                                                                 

NOVATEK-ELECTRO

 

Parameter 

 Min 

– 

Max 

Factory 

setting 

Description 

Address 

Enable the odd-
even check 

 

0

–1 

 

Used  in  case  of  data  exchange  between  the  units  in 

Modbus-network,  the  same  value  for  all  units  in  Modbus-
network 

0: unused, byte is completed with 2 stop bits 
1: byte is completed with parity bit and 1 stop bit 

 

536 

Enable the odd-
even check 
(to verify odds) 

 

0

–1 

 

Used  in  case  of  data  exchange  between  the  units  in 

Modbus-network, if odd-even check is enabled. The same 
value for all units in Modbus-network 

0: Parity check 
1: Imparity check 

 

537 

Response time 
from Modbus 
RTU, msec 

 
 

0

–60 000 

 
 

200 

Used  in  case  of  data  transfer  via  the  Modbus-network  in 

RTU mode. Waiting for a response is terminated if the first 
byte  of  the  response  has  not  been  received  within  the 
given  time  after  sending  the  request.  The  response  is 
always  expected  longer  then  time  of  silence  between 
frames  (time  of  silence  depends  on  the  bit  rate  and  shall 
be equal to the time required for transmitting 3.5 bytes, or 
1.75 msec for bit rate over 19,200 bits/sec). 

 
 

538 

Enable ASCII 
exchange in 
Modbus network 

 
 

0

–1 

 
 

Exchange  mode  in  Modbus-network,  the  same  value  for 

all units in Modbus-network 

0: RTU exchange mode (format: 1start bit, 8 data bits, 1 

parity bit or stop-bit or 1 stop bit 

– total 11 bits). 

1: ASCII exchange mode (format: 1start bit, 7 data bits, 1 

parity bit or stop-bit or 1 stop bit 

– total 10 bits). 

 
 

539 

Response time 
for subsequent 
Modbus ASCII 
character, msec 

 
 

0

–60 000 

 
 

1000 

Used  in  case  of  data  transfer  via  the  Modbus-network  in 
ASCII  mode.  Waiting  for  a  response  is  terminated  if  the 
subsequent  byte  of  the  response  has  not  been  received 
within  the  given  time,  as  indicated  for  the  reception  of  res-
ponse. Waiting  time  shall  not  be  less  then  time  required  for 
transmission of a single character (depending on the bit rate). 

 
 

540 

Miscellaneous 

Enable the unit 
automatic reset 

 

0

–1 

 

0: periodical reset is off 
1: the unit is reset after a preset time interval 

 

541 

Unit restart 
interval, min 

5

–7200 

7200 

Used if periodic restart of the unit is enabled 

542 

Password to 
enter the setup 
mode 

String of 

charac-

ters 

 
 

11111 

Used  to  access  the  setup  mode  for  Modbus  TCP.  Any 
string of 5 to 20 characters can be used as a password. It 
may  not  contain  spaces  or  special  characters  listed  in 
quotes below: 

«; : " < > * + = \ | / ? ,» 

 

543

– 

562 

The preset 
password for 
permit to record 
to devices, 
connected to  
ET-485 

 
 

Symbol 

string 

 
 
 

Used  for  access  to  the  devices,  connected  to  ET-485,  for 
requesting  functions  of  recording  or  control,  which  can 
change  the  state  of  these  devices.  As  a  password  one 
may  specify  a  string  with  length  up  to  6  symbols.  The 
string  must  not  contain  any  spaces  or  special  symbols, 
given below in quotes: 

“; : " < > * + = \ | / ? ,” 

 

563

–568 

The preset 
password for 
permit to read 
from devices, 
connected to  
ET-485 

 
 

Symbol 

string 

 
 
 

Used  for  access  to  the  devices,  connected  to  ET-485,  for 
requesting  functions  of  reading,  which  do  not  affect  the 
state  of  these devices.  As  a  password one may  specify  a 
string  with  length  up  to  6  symbols.  The  string  must  not 
contain  any  spaces  or  special  symbols,  given  below  in 
quotes: 

“; : " < > * + = \ | / ? ,” 

 

569

–574 

The preset pas-
sword for access 
to ET-485 
registers of state 
and settings 

 
 

Symbol 

string 

 
 
 

Used  for  access  to  ET-485  registers,  except  for  the 
registers  of  version,  password,  mode  and  flags.  As  a 
password  one  may  specify  a  string  with  length  up  to  6 
symbols.  The  string  must  not  contain  any  spaces  or 
special symbols, given below in quotes: 

“; : " < > * + = \ | / ? ,” 

 

575

–580 

Summary of Contents for ET-485

Page 1: ...perating conditions and wait at least 2 hours before connecting it to the electricity mains Do not use abrasives or organic compounds alcohol gasoline solvents etc for cleaning DO NOT OPEN AND REPAIR...

Page 2: ...6 6 2 Operating 485 over the HTTP protocol 7 6 3 Operating 485 over the Modbus TCP protocol 7 6 4 The operation of ET 485 in the mode of active connection to the client 8 7 SETTINGS 8 7 1 General info...

Page 3: ...onnecting side acts as a server Twisted pair is a pair of insulated conductors inside the cable which are twisted together in order to reduce the distortion of the transmitted signal Indicator is a LE...

Page 4: ...nit to the mains sec no more than 1 Utilized current in case of 220 V mA at most 10 Weight kg at most 0 200 Dimensions mm 95 52 67 Unit purpose Communication equipment Nominal operation condition cont...

Page 5: ...g while data exchange over the Ethernet network Figure 2 Front panel of ET 485 3 2 FUNCTIONING Simplified structural diagram of the unit is provided in Figure 3 32 digit RISC processor with ARM archit...

Page 6: ...CEDURE FOR 485 Suggested maintenance interval every six month The maintenance procedure includes visual inspection to verify the connection of cables to the 485 terminals as well as the absence of fra...

Page 7: ...ddress if connection filtering over IP is activated If this address does not correspond with the preset value the connection is rejected Otherwise the unit starts checking the list of available connec...

Page 8: ...NFIGURATION MAY RESULT IN BLOCKING OR OBSTRUCTION WHILE TRYING TO REACH THE UNIT OVER THE NETWORK In this case all parameters should be factory reset see Section 3 2 7 2 PARAMETERS OF 485 A collection...

Page 9: ...s Mode more detailed see register 141 0 User mode 1 Configuration mode 121 Current IP address IP address of the unit in Ethernet network 122 125 Current MAC address MAC address to authenticate the uni...

Page 10: ...1 the connected client has the permit for setting ET 485 similar to register 121 Bit 8 0 the client is not the main client 1 the client is the main client Bit 9 1 the client has the right for connecti...

Page 11: ...ed 1 setting parameters via Modbus interface or WEB interface is only allowed from the IP address of the main client 526 Enable the IP connections filter over Modbus TCP 0 1 0 0 Modbus TCP connections...

Page 12: ...sponse has not been received within the given time as indicated for the reception of res ponse Waiting time shall not be less then time required for transmission of a single character depending on the...

Page 13: ...additional client having IP address 127 0 0 1 587 Enable the Modbus TCP remote server query redirection mode 0 1 0 0 queries are not sent to remote server 1 queries are additionally sent to Modbus TC...

Page 14: ...ent 0 automatic sending is not accomplished 1 after active connection to the client the unit once sends 1000 1010 registers contents in the form of Modbus response without client query response 1000 1...

Page 15: ...ress IP address DHCP settings are modified and saved the browser may not load the page after the restart of the unit by pressing the Restart button This can happen as the browser continues to reply ov...

Page 16: ...se 9 5 The manufacturer s warranty does not apply to compensation for direct or indirect damages loss or injury associated with transporting the unit to the place of purchase or to the manufacturer 9...

Page 17: ...not necessary for communication between units in a subnet and is only used to connect units of one subnet to units of other networks Factory addressing settings for ET 485 Interface Converter are lis...

Page 18: ...roperties Figure 2 TCP IP properties window in Windows OS window in Windows OS 3 SWITCHING TO INTERNET WARNING The user is strongly recommended to connect the unit to Internet under the supervision of...

Page 19: ...ET 485 IP address filters for recording and or reading can be enabled to provide to a single client the permit to request via Modbus protocol such function codes which are not reading functions unit s...

Page 20: ...direction of queries If the unit whereto the queries are redirected is set to such redirection that the query will be transferred to its initial sender the queries will be transferred nonstop which wi...

Page 21: ...w unit can be specified as the main client It allows increasing the number of RS 485 connected devices and simultaneously connected Modbus TCP clients by 10 for every additional ET 485 unit Each of th...

Page 22: ...g receiving alert messages about incidents via SMS or E Mail Overvis system maintains ACC mode used in ET 485 acting as a data collection server of many simultaneously connected units and providing ac...

Page 23: ...etc b client uses unique MAC address of the unit for its identification In order to provide the access for the user the unique activation code is given to each unit herewith Modbus write protection m...

Page 24: ...ode Symbol 32 64 96 33 65 A 97 A 34 66 B 98 B 35 67 C 99 C 36 68 D 100 D 37 69 E 101 E 38 70 F 102 f 39 71 G 103 g 40 72 H 104 h 41 73 I 105 i 42 74 J 106 j 43 75 K 107 k 44 76 L 108 l 45 77 M 109 m 4...

Page 25: ...AC110 61F GPN V50 AC110 70177 1011 F03 03 HAS B F03 03 HAS C F03 31 81513201 81513535 81550401 FT1A C12RA W 88981106 H2CAC24A R88A CAGA005S R88A CRGB003CR E R88ARR080100S R88A TK01K DCN1 1 DTB4896VRE...

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