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Westermo TR-36 User Manual

Tele and leased line modem for rv-07 19” rack system
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User Guide
6614-2202
TR-36
4
3
2
1
4
3
2
1
Tele and leased line modem
for RV-07 19" rack system
www.westermo.com

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Summary of Contents for Westermo TR-36

  • Page 1 User Guide 6614-2202 TR-36 Tele and leased line modem for RV-07 19” rack system www.westermo.com...

  • Page 2: Legal Information

    Legal information The contents of this document are provided “as is”. Except as required by applicable  law, no warranties of any kind, either express or implied, including, but not limited to,  the implied warranties of merchantability and fitness for a particular purpose, are made  in relation to the accuracy and reliability or contents of this document. Westermo  reserves the right to revise this document or withdraw it at any time without prior  notice. Under no circumstances shall Westermo be responsible for any loss of data or income  or any special, incidental, and consequential or indirect damages howsoever caused. More information about Westermo can be found at the following Internet address: http://www.westermo.com 6614-2202...

  • Page 3: Before Installation

    Safety Before installation: This modem is for restricted access area use only Read this manual completely and gather all information on the unit. Make sure that  you understand it fully. Check that your application does not exceed the safe oper- ating specifications for this unit.  This unit should only be installed by qualified personel. This unit should be built-in to an apparatus cabinet, or similar, where access is  restricted to service personnel only. The power supply wiring must be sufficiently fused, and if necessary it must be  possible to disconnect manually from the power supply. Ensure compliance to  national installation regulations. This unit uses convection cooling. To avoid obstructing the airflow around the unit,  follow the spacing recommendations (see Cooling section). Before mounting, using or removing this unit: Prevent access to hazardous voltage by disconnecting the unit from power supply  and all other electrical connections. Warning! Do not open connected unit. Hazardous voltage may occur within this  unit when connected to power supply or TNV circuits. Prevent access to hazardous voltage by disconnecting the unit from power supply. Warning! Do not open connected unit. Hazardous voltage may occur within this  unit when connected to power supply or TNV circuits. Care recommendations Do not drop, knock or shake the unit, rough handling above the specification may cause  damage to internal circuit boards. Do not use harsh chemicals, cleaning solvents or strong detergents to clean the unit. Do not paint the unit. Paint can clog the unit and prevent proper operation. Do not expose the unit to any kind of liquids (rain, beverages, etc). The unit is not water- proof. Keep the unit within the specified humidity levels. Do not use or store the unit in dusty, dirty areas, connectors as well as other mechanical  part may be damaged. If the unit is not working properly, contact the place of purchase, nearest Westermo dis- tributor office or Westermo Tech support. Maintenance No maintenance is required, as long as the unit is used as intended within the specified  conditions. 6614-2202...

  • Page 4: Agency Approvals And Standards Compliance

    Agency approvals and standards compliance Type Approval / Compliance EN 61000-6-2, Immunity industrial environments EN 55024, Immunity IT equipment EN 61000-6-3, Emission industrial environments Safety EN 60950-1, IT equipment PSTN ETSI TS103 021-1, ETSI TS103 021-2, ETSI TS103 021-3 6614-2202...

  • Page 5: Declaration Of Conformity

    Declaration of Conformity Westermo Teleindustri AB Declaration of conformity The manufacturer Westermo Teleindustri AB SE-640 40 Stora Sundby, Sweden Herewith declares that the product(s) Type of product Model Art no Installation manual Rack mounted Tele and Leased TR-36 3614-0500 6614-2201 Line modem...

  • Page 6: Type Tests And Environmental Conditions

    0 to +50ºC  Storage & Transport –25 to +70ºC  Humidity Operating 5 to 95% relative humidity non condensing. Storage & Transport 5 to 95% relative humidity non condensing. Altitude Operating 2 000 m / 70 kPa Reliability prediction  MIL-HDBK-  Operating (MTBF) 217F Service life Operating 10 year Packaging Enclosure – – – Dimension W x H x D 485 x 135 x 180 mm Weight TR-36 0.14 kg Weight Total   4 kg (17 TR-36 + 2 PS-20)  Degree of protection IEC 529 Enclosure IP 20  Cooling Convection Mounting 19” rack 6614-2202...
  • Page 7 Description TR-36 is designed to satisfy industry’s demands on reliability and functionality in environ- ments with high levels of interference. The modem has an RS-232 interface and works  both as calling/answering and on 2- or 4-wire leased line. TR-36 can handle rates up to   115.2 kbit/s on the terminal side and up to 33.6 kbit/s on the line side. Specific param- eters can also be set in hardware using DIP-switches. The modem is equipped with transient protection on the line side and a “watchdog” that  monitors and automatically resets the modem in the event of a fault. These functions  together with the possibility for remote configuration makes the modem perfect for  installation at unmanned sites and prevent the need of costly service trips. The modem also has password protection and dial-back security to ensure that only  authorised users can communicate with the modem. TR-36 is intended for RV-07 19” rack system.   In the TR-36 there is also an RS422/485 interface allowing multidrop connections to  many types of industrial equipment. … Data rate up to 33.6 kbit/s with Fast Connect … Terminal rate up to 115.2 kbit/s … 2- and 4-wire leased line … V23 HDX with multidrop … DTR and incoming data dialling … DIP-switch configuration … Watchdog … Secure call back and access … Industrial environment transient protection on all interfaces … Up to 11 bits … Tri-Galvanic isolation (interface/line/supply)  … Caller ID presentation and answering … Remote configuration … RS-422 / RS-485 interface  … Dial backup for PSTN and Leased Line  6614-2202...

  • Page 8: Interface Specifications

    Interface specifications Power RV-07, 17 pcs TR-36, PS-20 HV Power supply 110 – 250 VDC  +10 / –10%  115 – 230 VAC +15 / –10% Power consumption 500/240 mA, 50 W Rated frequency DC / 48 – 62 Hz Fuse, F1 4 AS 5x 20 mm Isolation to All other ports 3 kV  50 Hz 1 min Connection Detachable screw terminal Shielded cable Not required *  Direction relative this unit Power RV-07, 17 pcs TR-36, ext 24 – 48 VDC Power supply 24 – 48 VDC Power consumption 34 W Rated frequency DC  Isolation to All other ports 1.5 kV  50 Hz 1 min Connection Detachable screw terminal** Shielded cable Not required *  Direction relative this unit  ** Maximum wire length to external power supply < 10 m. Public Switched Telephone Network (PSTN)  Electrical specification Public Switched Telephone Network Data rate...
  • Page 9 Leased Line (LL) Electrical specification 2- or 4-wire Leased Line  Data rate 300 bit/s – 33.6 kbit/s  Protocol B103, B212, V21, V22, V22B, V23C, V23HDX, V23FDX, V32,   V32B, V34 Transmission range/ Budget PSTN 30 dB  Leased line 40 dB Protection Installation Fault Tolerant (up to ±60 V)  Isolation to Power port  3 kV  50 Hz 1 min  PSTN line   2 kV  50 Hz 1 min  RS-232   2 kV  50 Hz 1 min  RS-485 2 kV  50 Hz 1 min Connection Detachable screw terminal Shielded cable Not required RS-422/485  Electrical specification EIA/TIA-485 ITU V.112-wire or 4-wire twisted pair Data rate 1200 bit/s – 115.2 kbit/s  Data format 7 or 8 data bits, Odd, even or none parity, 1 or 2 stop bits,   Σ 9–12 bits  Protocol Transparent  Retiming Yes ...
  • Page 10 RS-232  Electrical specification EIA/TIA-232 Data rate 1 200 bit/s – 115.2 kbit/s Data format 7 or 8 data bits, Odd, even or none parity, 1 or 2 stop bits;   Σ 9–12 bits Protocol Transparent Retiming Transmission range Cable length ≤15 m Isolation to Power port 3 kV  50 Hz 1 min PSTN line 2 kV  50 Hz 1 min Leased line 2 kV  50 Hz 1 min Connection 9-pin D-sub female (DCE) and Detachable screw terminal  (DCE ) Connector size Detachable screw terminal  0.2 – 2.5 mm  (AWG 24 – 12)  Shielded cable Not required*  Conductive housing Isolated to all other circuits  Miscellaneous Do not connect RS-232 and RS-422 / 485 simultaneously * To minimise the risk of interference, a shielded cable is recommended when the cable is located inside 3 m  boundary to the rails and connected to this port.   The cable shield should be properly connected (360°) to an earthing point within 1 m from this port.   This earthing point should have a low impedance connection to the conductive enclosure of the apparatus   cabinet, or similar, where the unit is built-in. This conductive enclosure should be connected to the earthing   system of an installation and may be directly connected to the protective earth.
  • Page 11 Connections  TR-36 LED Status Indicators RS-232 RS-422/485 Jack socket  PSTN Leased Line Power Position Direction* Description Product   marking AC: Neutral  DC: – Voltage AC: Line  DC: + Voltage  To minimise the risk of interference, a shielded cable is recommended when the cable is located inside 3 m  boundary to the rails and connected to this port.   The cable shield should be properly connected (360°) to an earthing point within 1 m from this port. This earth- ing point should have a low impedance connection to the conductive enclosure of the apparatus cabinet, or  similar, where the unit is built-in. This conductive enclosure should be connected to the earthing system of an  installation and may be directly connected to the protective earth. PSTN Position Direction* Description Screw terminal* In/Out PSTN Transmit/ Receive  In/Out PSTN Transmit/ Receive  * The PSTN screw terminals are shared with 2-wire Leased line 6614-2202...
  • Page 12 Leased Line Position Direction* Description 4-wireTransmit In/Out 2-wire Receive/ Transmit 4-wireTransmit In/Out 2-wire Receive/ Transmit 4-wire Receive In/Out 2-wire Receive/ Transmit at Leased line PSTN backup 4-wire Receive  In/Out 2-wire Receive/ Transmit at Leased line PSTN backup *  Direction relative this unit RS-422/485 Position Direction  Description Product marking R+ (A’) Receive RS-422/485 4-wire R– (B’) Receive RS-422/485 4-wire R– T+ (A) Transmit RS-422/485 4-wire T/R+ In/Out T+ (A/A’) Transmit/Receive RS-485 2-wire T– (B) Transmit RS-422/485 4-wire T/R– In/Out T+ (A/A’) Transmit/Receive RS-485 2-wire RS-232 (DCE) Position D-sub...

  • Page 13: Led Indicators

    LED indicators Status Indication of RTS  RTS signal is inactive RTS signal is active No data ON / FLASH The modem transmitting data on the DTE interface No data  ON / FLASH The modem receiving data on the DTE interface DCD signal is inactive DCD signal is active, modem has detected a carrier or the signal is  set to always on Reliable mode is off, direct or normal mode Reliable mode is on FLASH Reliable mode with error correction and compression LINE The modem is on-hook The modem is off-hook with a established connection FLASH Line backup interface in use The modem has no power  The modem is up and running 6614-2202...

  • Page 14: Dip Switch Settings

    DIP-switch settings Before DIP-switch settings: Prevent damage to internal electronics from electrostatic discharges (ESD)   by discharging your body to a grounding point (e.g. use of wrist strap). NOTE  DIP-switch alterations are only effective after a power on. S1 DIP-switch  Stored values / Auto detect ON  ON  Use stored values Auto detect*   1  2  3 4  5 6  7 8   1  2  3 4  5 6  7 8 * 300 and 600 bit/s not supported S1 DIP-switch  Selection of DTE speed ON  ON  300 bit/s 9600 bit/s   1  2  3 4  5 6  7 8   1  2  3 4  5 6  7 8 ON ...
  • Page 15 S1 DIP-switch  Selection of DTE format ON  ON  7E 1S 7E 2S   1  2  3 4  5 6  7 8   1  2  3 4  5 6  7 8 ON  ON  7O 1S 7O 2S   1  2  3 4  5 6  7 8   1  2  3 4  5 6  7 8 ON  ON  8N 1S 8N 2S   1  2  3 4  5 6  7 8  ...
  • Page 16 S2 DIP-switch  RS-422/485 ON  ON  RS-422/485, 2-wire RS-422/485, 4-wire   1  2  3 4  5 6  7 8   1  2  3 4  5 6  7 8 S2 DIP-switch  Leased line 2/4 wire selection ON  ON  Leased line 2-wire Leased line 4-wire   1  2  3 4  5 6  7 8   1  2  3 4  5 6  7 8 S2 DIP-switch  Selection PSTN backup of Leased line ON  ON  Backup of leased line disabled Backup of leased line enabled  ...
  • Page 17 S3 DIP-switch  Selection of line speed and modulation ON  ON  Use saved parameters   V.34, 1 9600 defined by AT+MS   1  2  3 4  5 6  7 8   1  2  3 4  5 6  7 8 ON  ON  V.21 300 V.32bis 14400   1  2  3 4  5 6  7 8   1  2  3 4  5 6  7 8 ON  ON  V.23 1200 hdx V.34 19200   1  2  3 4  5 6  7 8  ...
  • Page 18 S4 DIP-switch  Set modem to factory default ON  ON  Use stored values Restore factory default setting*   1  2  3 4  5 6  7 8   1  2  3 4  5 6  7 8 Don’t leave S4:1 in ON position if not intended to restore factory setting at every power on. S4 DIP-switch  DCD, DTR and DSR control ON  ON  DCD and DSR always on,   Use stored values DTR ignored (AT&C0&D0&S0)   1  2  3 4  5 6  7 8   1  2  3 4  5 6  7 8 S4 DIP-switch  Data compression control ON ...
  • Page 19 S5 DIP-switch  RS-422/485 termination ON  ON  Termination of R in 4-wire   No termination connection   1  2  3 4   1  2  3 4 ON  ON  Termination of both T and R   Termination of both T and R   in 4-wire connection in 2-wire connection   1  2  3 4   1  2  3 4 Factory settings ON  ON  ON    1  2  3 4  5 6  7 8   1  2  3 4  5 6  7 8  ...
  • Page 20 V.23 2- / 4-wire HDX- / FDX-leased line settings S1 DIP-switch  Selection of DTE speed  ON  1200 bit/s   1  2  3 4  5 6  7 8 S1 DIP-switch  Selection of DTE-format  ON  8E1, 8O1, 8O1   ON  8E2, 8O2, 8N2   in command mode in command mode   1  2  3 4  5 6  7 8   1  2  3 4  5 6  7 8 ON  ON  7E2, 7O2, 8N2, 8N2   7E1, 7O1, 8N1, 8N1   in command mode in command mode   1  2  3 4  5 6  7 8  ...
  • Page 21   1  2  3 4  5 6  7 8   1  2  3 4  5 6  7 8 * The leased line should be terminated at the end points. Termination recommandations of Leased lines   and Dial-up connections In some connections the communication line (Leased Line or PSTN) must be  terminated. The table below shows the right way to activate the termination  for different usages. As a standard, the receiver in multidrop systems at the end  points shall be terminated. S4 DIP-switch  Termination recomendations for TR-36 Multidrop ON  ON  PSTN V23 2-wire – endunit   1  2  3 4  5 6  7 8   1  2  3 4  5 6  7 8 Multidrop PSTN ON ...
  • Page 22 RS-422/485 general advice 4-wire termination R– T– R– R+ T– T+ R– T– B’ A’ B A TR-36 485 =Termination Slave unit Slave unit Slave unit 2-wire termination T– Max 0.3 metre TR-36 485  =Termination Slave unit Slave unit Slave unit Termination recommendations The RS-422/485 line must be terminated. In the TR-36, the termination is combined with  fail-safe functionality. The termination is used to prevent undefined states when the bus is  in tri-state condition. …  Using 2-wire RS-485 both ends should be terminated.  …  Using 4-wire RS-485 both pairs shall be terminated at both ends.   …  Using 4-wire RS-422 it’s only necessary to terminate the receivers.   RS-422/485 connection pins can be differently named. For some equipment brands   the T+ corresponds to A, but other brands might use some other naming convention.  If a unit does not work it can help to swap A and B.

  • Page 23: Mounting /Removal

    Mounting /Removal Before mounting or removing the unit: This unit has one separate protective earthing terminal (marked with “symbol”    ), while  the unit is provided with two mains supply connectors. The grounding terminal of these  mains supply connectors is a functional earthing point only. Prevent access to hazardous voltages by disconnecting the unit from AC/DC mains   supplies and all other electrical connections. A protective earthing conductor should be connected to the protective earthing terminal  and have a cross-sectional area of at least 1.5 mm Prevent damage to internal electronics from electrostatic discharges (ESD) by discharging  your body to a grounding point (e.g. use of wrist strap). Mounting This unit should be horizontally  mounted with screws in the holes  located in the left and right hand  brackets on the unit. Connect the protective earthing  conductor to the protective earth- ing terminal, before connection of any AC/DC  mains supply or other electrical connections. As this unit uses convection cooling, it is important to avoid obstructions that prevent  normal vertical airflow through the unit. For this reason a clearance of 1U below and  2U above the unit is recommended. These clearance distances should be increased if  heat from another unit is likely to cause an undesirable rise in temperature. Under no  circumstances should the air temperature around the unit exceed 15 degrees C above  the operating temperature of any modem installed in it. The unit should be installed in a  cabinet that has suitable fans and filters so that good airflow is maintained without the  ingress of dirt or dust. Removal Disconnect all AC/DC mains supplies and other electrical connections before the   removal of protective earthing conductor from the protective earthing terminal. Note: •  Always add modems from one end in the rack. • To ensure proper galvanic connection between front panels, do not leave empty   slots between modems. 6614-2202...

  • Page 24: Rear Connections

    Rear connections  TR-36, RV-07 and Power Supply Extern 24 VDC PSU Fail PSU Fail PS-20 HV Protective Earth 6614-2202...

  • Page 25: Remote Configuration

    AT -Commands Please refer to the AT Commands Interface Guide found on the enclosed CD or at  the Westermo website for a complete list of all available AT-commands and a detailed  description of the serial AT-command interface. Configuration The TR-36 can be configured both from the local DTE interface and remotely over the  PSTN network. Independently if the local or remote interface is used the configuration  can be made with AT-commands or with a PC-based application configuration tool.  Basic configurations can also be made with DIP-switches locally. Remote configuration The TR-36 can be configured from a remote modem. To configure a TR-36 any GSM,  ISDN or PSTN modem can be used. The modem used  to configure is referred as the “local modem”.  Please make sure that the remote TR-36 is connected to the PSTN network and is  powered up. …  Connect the local modem to it's media (ISDN, PSTN or GSM) …  Connect the PC's com-port to the DTE interface of the local modem. …  Connect the power supply. …  Start a terminal emulation program (i.e. Windows Hyper-Terminal). …  Configure the local modem data rate and word format. …  Set up a connection to the remote TR-36 to be configured by using the nor- mal dial command: ATD<No><CR>. When connected send the remote escape  sequence <++++>. The called remote TR-36 will acknowledges by requesting the  remote password. Enter the correct password (default: no password, just return).  Next; configure the remote TR-36 using AT-commands. The password for remote  configuration is defined with AT*WRCP – Remote configuration password. …  Configure the parameter on the remote TR-36 from your terminal program and  save the settings with AT&W. …  Hang up the connection using the ATH command. 6614-2202...

  • Page 26: Application Example

    Application example …  TR-36 connected to TR-36 with DTR signal call PSTN    Network Configure the units AT&F Set the unit to factory default. AT&W Store default settings. Set up the connection – The dialling modem AT&Z0=”nnn” Store the number of the remote modem in the dialling TR-36. AT&S0 Set DSR signal always high (if this signal is used to trig the DTR). AT&B1 Activates automatic DTR dialling if DTR switches from low (OFF) to high (ON).  AT&W Save settings. Switch DTR  The modem will now dial the phone number stored in the first location of the  from OFF   telephone number table (AT&Z0=<nnn>) to ON Set up the connection – The answering modem Enter the answer command when RING comes from the   network or set up ATS0=1 to auto answer on 1 RING signal   (or more than 1). NOTE:   I f no valid DTR signal can be provided by external application, the modems DSR signal can  be used to trig the transmission. Connect the DSR signal via a relay, or other potential  free contact, to the DTR signal. A 10 kohm pull down resistor should also be connected  between the DTR and a signal that is always low e.g. the DCD. Relay External application 10 kohm May be required in harsh environments.
  • Page 27 …  TR-36 – Secure Call-back The TR-36 is connected to a PLC which one want to restrict access to. The TR-36 can  support access control through the Secure Callback function. In this example password  and callback to a predefined number is chosen. The modem in the calling end is here  chosen to be a PSTN modem, but can be any of the PSTN, ISDN or GSM modem from  Westermo product range. The DTE serial speed between the PLC – TR-36 and TDW-33 – PC is assumed to be  9600 8N1 but can be chosen to fit the actual system requirement. Configure the TR-36 AT&F Set the unit to factory default AT+IPR=9600 DTE baudrate 9600 AT+ICF=3,4 Character framing 8 data, 1 stop, parity  none ATS0=1 Auto answer after first ring ATQ1E0&C1&K0&A1 Suitable for PLC communication AT&W Save settings AT*WCB=4 Callback enabled, Password in one or more  positions in *wcbpwdx (x= 1,2 or 3), call- back to number in wcbtab   (*wcbpwd1 corresponds to *wcbtab1. . .) AT*WCBTAB=1,”+4670428000”,”n3Y9kA6otYZu8” Define callback number and password  in position 1.  When the password  is entered number  +4670428000 will be called. AT*WCBTIME=10 Define delay time between hangup   an callback.  The TR-36 will wait 10 s after hangup to  callback to allow the analogue modem to  hangup.  Configure the TDW-33 AT&F...
  • Page 28 PSTN  Network Set up the connection The dialling modem  The answering modem  Comment TDW-33 TR-36 ATD0705123456 TR-36 answers the call and  Dial the number to TR-36 requests to TDW-33 CONNECT 9600  TR-36 verifies the password  Operator/system at TDW-33 enters  Password: n3Y9kA6otYZu8 to the passwords stored and  Password n3Y9kA6otYZu8 if true compare dissconnects. NO CARRIER Wait 10 s The connection is broken and TR- 36 waits the programmed 10 s for  TDW-33 to disconnect TR-36 dials +4670428000 The number programmed corre- sponding to the password is dialled,  preferable it’s the number to the  TDW-33 CONNECT 9600 CONNECT 9600 Connection is established between  the PC at TDW-33 and the PLC at  TR-36 6614-2202...
  • Page 29 …  Silent answering on predefined numbers TR-36 PSTN  Network The TR-36 is connected to Power meter which is remotely monitored and the TR-36  shares the PSTN line with normal telephones which is preferred not to give a Ring signal  when the meter is read. The TR-36 is setup to answer calls on the Caller ID received, the valid numbers to  answer is programmed into the TR-36. There exists a number of standards for sending  Caller ID please check which standard is used by your operator, the TR-36 supports the  major implementations. In this example the DTMF Caller ID version is used. Note some  implementations doesn’t give the possibility to make a silent answer since the Caller ID  is sent between first and second ring signal.  On the originating side any type of modem able to call a PSTN number can be used. Configure the TR-36 AT&F Set the unit to factory default AT+IPR=9600 DTE baudrate  9600 AT+ICF=3,4 Character framing 8 data, 1 stop, parity none ATS0=0 No auto answer on Ring signals ATQ1E0&C1&K0&A1 Suitable for PLC communication AT&W Save settings AT*WACCTAB=1,”016428000”  Set the valid A-numbers for automatic answering AT*WACCTAB=2,”016480250” AT*WCID=3,3 Set Caller ID to A-number answer with DTMF coded numbers 6614-2202...
  • Page 30 …  Frequently used settings for PLC-systems PSTN    Network Most PLC-systems and other industrial applications where modems are used require the  same changes to the standard settings. The most commonly encountered problems concern speed, parity and control signals  from the connected equipment. Speed and parity are changed with the switches under the cover in block S1. If this action  does not solve the problem the modem’s answering codes and possible echoing of com- mands might be the source of the difficulty. Below follows a list of commands that might resolve the problems. The commands may  of course be placed on one single command line if desired. Configure the TR-36 connected to the PLC AT&F Set the unit to factory default ATV0 Gives the answering codes in short format. (digits) ATQ1 No result codes are sent on the RS-232/V.24 connection. ATE0 Commands that are sent from the terminal/computer etc. are not echoed back  to the RS-232/V.24 connection. AT&C1 DCD will follow the carrier on the line. AT&K0  No handshaking. AT&A1 Character abort option on. AT&W Save settings Note: S3:5 may be used for this purpose. 6614-2202...
  • Page 31 …  Leased line connection using 2- or 4-wire Leased Line   Leased line connections can be set up using either 2- or 4-wire.When renting a 4-wire  line from a telephone company one pair of cables for transmission and one pair for  reception are usually provided. The maximum transmission distance depends on the attenuation of the line. The maxi- mum value is theoretically 30 dBm. To have a good error rate it is recommended to keep  the attenuation under 25 dB. When renting lines from a telephone company a longer  transmission distance is normally possible as the signals are probably transmitted over  PCM-lines, i.e. fibre optic or other media with low attenuation. To set the modem for leased line applications use the dip switches. Configure the units S2:1, 2 ON  Leased line calling  S2:2 ON Leased line answering S2:5 OFF Leased line 2-wire S2:5 ON Leased line 4-wire Sets speed and parity for the RS-232 port. Decides line-speed. Must be set in direct mode applications. To make switch setting active the power must be cycled OFF -> ON. Resistance, attunation and distance for different wires Tele Cable Area Resistance for Attunation Recommended  Max Distance double cable Max distance  (30 dB) (25 dB) ≈ 0,2 mm 2 Ø 0,5 mm* 175 W/km 1,1 dB/km 23 km 27 km...
  • Page 32 …  TR-36 485 – two wire half duplex TR-36 485 PSTN  Network Termination In this application the TR-36 is set to communicate with a number of units with   RS-485 interface. The communication is 2 wire half duplex at 38.4 kbit/s, 8 data, parity even and   1 stop bit. Configure the TR-36 485 AT&F Set the unit to factory default AT&W Store default settings S2:3 ON RS-422/485 enable RS-232 disable S2:4 OFF Select 2-wire RS-485 S1:4 ON 38.4 kbit/s S1:7 ON 8 data bits even parity 1 stop bit S4:8 ON Termination / Failsafe active To make switch setting active the power must be cycled OFF ≥ ON. 6614-2202...
  • Page 36 Westermo Data Communications AB  Westermo Data Communications GmbH  SE-724 81 Västerås  Goethestraße 67, 68753 Waghäusel  Phone: +46 (0)16 42 80 00 • Fax: +46 (0)21 35 18 50  Tel.: +49(0)7254-95400-0 • Fax.:+49(0)7254-95400-9  info.sverige@westermo.se E-Mail: info@westermo.de   Westermo OnTime AS  Westermo Data Communications S.A.R.L.  Gladsvei 20 0489 Oslo, Norway  9 Chemin de Chilly 91160 CHAMPLAN  Phone +47 22 09 03 03 • Fax +47 22 09 03 10  Tél : +33 1 69 10 21 00 • Fax : +33 1 69 10 21 01  E-mail: contact@ontimenet.com E-mail : infos@westermo.fr  Westermo Data Communications Ltd  Westermo Data Communications Pte Ltd  Talisman Business Centre • Duncan Road  2 Soon Wing Road #08-05  Park Gate, Southampton • SO31 7GA  Soon Wing Industrial Building  Phone: +44(0)1489 580-585 • Fax.:+44(0)1489 580586  Singapore 347893  E-Mail: sales@westermo.co.uk Phone +65 6743 9801 • Fax +65 6745 0670  E-mail: earnestphua@westermo.com.sg  Westermo Teleindustri AB have distributors in several countries, contact us for further information.

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