W&T Serial Fiber Optic Interfaces Manual Fiber Optic Interfaces Type W&T Subject to error and alteration Release 81210, 81211 61210, 61211 65210, 65211 41210 1.
W&T Serial Fiber Optic Interfaces © 03/2010 by Wiesemann & Theis GmbH Subject to error and alteration: Since it is possible that we make mistakes, you mustn’t use any of our statements without verification. Please, inform us of any error or misunderstanding you come about, so we can identify and eliminate it as soon as possible. Carry out your work on or with W&T products only to the extent that they are described here and after you have completely read and understood the manual or guide.
W&T Serial Fiber Optic Interfaces Glass fiber optic transmission lines are the solution of choice when you need to implement absolutely noise-free serial data transmission over long distances and/or in noisy environments. Whereas the attenuation with plastic fiber optics places a limit of maximum 100 meters on the attainable cable length, the distances achievable with glass fiber optics are significantly greater and at a comparable cable cost.
W&T Serial Fiber Optic Interfaces Index Inhalt Common properties ............................................................ 35 Fiber Optic <> RS232 Interface without Handshake, #81210 .. 39 Fiber Optic <> RS232 Interface with Handshake, #81211 ....... 41 Fiber Optic <> RS485 / RS422 Interface, #61210 ................... 43 Fiber Optic <> Profibus Interface, #61211 ............................ 47 Fiber Optic <> 20mA Interface, #41210 ................................
W&T Serial Fiber Optic Interfaces Common properties Function All W&T Fiber Optic Interfaces convert the data lines of serial ports (RS232, RS485, RS422, Profibus, 20mA) into a port for glass fiber optic cable. In addition, Interface #81211 provides a conversion for RS232 that supports not only the data lines but also two hardware handshake lines. Well-known ST connectors are used for connecting the glass fiber optic cable, whereas the serial interface is configured as a 9-pin SUB-D connector.
W&T Serial Fiber Optic Interfaces Galvanic isolation and ESD protection The serial ports for all Interfaces are galvanically isolated from the supply voltage through a DC/DC converter with an isolation voltage of 1 KV. All signal lines for the serial interface are protected by ESDimmune interface chips against static discharge for voltages up to 15 kV corresponding to IEC 801-2, Level 4.
W&T Serial Fiber Optic Interfaces Common technical data Data format: any data format Isolation: min. 1 kV between serial interface and power supply Power supply: Supplied power adapter or 12..24 V DC/AC max. 150 mA at 12 V input voltage Current consumption: Serial connector: FO cable connector: 9-pin SUB-D adapter ST plug adapter SMA plug adapter on request Fiber-optic medium: Duplex multimode fiber-optic cable Max. distance: 50/125µm: typ. 3200m, min. 1400m @3dB/km 62.5/125µm: typ. 3800m, min.
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W&T Serial Fiber Optic Interfaces Interface FO <> RS232 without handshake, #81210 Function The W&T Interface 81210 allows bi-directional conversion of an RS232 interface into a fiber optic interface with a transmission speed of up to 230.000 bps. The interface works independently of the data format used and converts one data line in each direction. Connectors The fiber optic cables are connected to the converter using ST series connectors, with a DB9 plug for the RS232 connection.
W&T Serial Fiber Optic Interfaces Applications RS232 <> Fiber optic interface application with software handshake Fiber optic PC RxD GND RTS CTS DSR DTR 3 2 2 3 DOut 5 GND 5 DIn 81210 RS232 TxD 7 8 6 4 Technical data Baud rate: Transmitted signals: 0..
W&T Serial Fiber Optic Interfaces Interface FO <> RS232 with handshake, #81211 Function The W&T Interface 81211 allows bi-directional conversion of an RS232 interface into a fiber optic interface with a transmission speed of up to 115.200 bps. The interface works independently of the data format used and converts one data line and one hardware handshake line in each direction.
W&T Serial Fiber Optic Interfaces Applications RS232 <> Fiber optic interface application with hardware handshake Fiber optic RS232 PC GND RTS CTS DSR DTR 2 2 3 5 5 7 8 DIn DOut GND 8 HIn 7 HOut 81211 TxD RxD 3 6 4 Technical data Baud rate: Transmitted signals: 0..
W&T Serial Fiber Optic Interfaces Interface FO <> RS485 / RS422, #61210 Function The W&T Interface 61210 allows bi-directional conversion of an RS485 or an RS422 interface into a fiber optic interface with a transmission speed of up to 1,5 Mbps. The interface works independently of the data format used and converts one data line and one hardware handshake line in each direction.
W&T Serial Fiber Optic Interfaces Operating mode The W&T interface 61210 can be set for three different operating modes by DIP switch setting on the RS422/RS485 interface module. The selectable operating modes are briefly described here: RS422, RS485 4-wire bus master application One data channel and one handshake channel in each direction are available. The RS422/RS485 receivers and transmitters are always active in this operating mode.
W&T Serial Fiber Optic Interfaces Termination For all RS485 operating modes it is essential that the bus system be terminated with a termination network which assures a defined rest state in the high-impedance phases of bus operation.
W&T Serial Fiber Optic Interfaces Applications RS422 application Fiber optic 1 6 2 7 RxD A (-) RxD B (+) TxD A (-) TxD B (+) RS422 device 61210 RS422 DOut A DOut B DIn A DIn B RS485 4-wire bus master application Fiber optic RxD A (-) RxD B (+) TxD A (-) TxD B (+) RS485 device 1 6 2 7 RxD A (-) RxD B (+) TxD A (-) TxD B (+) RS485 device 61210 RS485 DOut A DOut B DIn A DIn B RS485 2-wire application 1 6 2 7 Bus A (-) Bus B (+) RS485 device 61210 DOut A DOut B DIn A DIn B Bus A (-) Bus B (
W&T Serial Fiber Optic Interfaces Interface FO <> Profibus, #61211 Function The W&T Interface 61211 allows bi-directional conversion of an Profibus interface into a fiber optic interface with a transmission speed of up to 1,5 Mbps. The interface operates independent of the respective data format and converts the Profibus data into light signals which can be transmitted over a glass fiber optic cable.
W&T Serial Fiber Optic Interfaces Termination Both ends of a Profibus segment must be terminated with a terminating network which is usually integrated into the Profibus connectors and can be optionally switched. This resistor network has two functions: to ensure reflection-free termination of the line, and to provide a defined rest state on the lines during the high-impedence phases of the bus system.
W&T Serial Fiber Optic Interfaces Interface FO <> 20mA #41210 Function The W&T Interface 41210 allows bi-directional conversion of an 20mA interface into a fiber optic interface with a transmission speed of up to 19.200 bps. The interface works independently of the data format used and converts one data line in each direction. Connectors The fiber optic cables are connected to the converter using ST series connectors, with a DB9 plug for the 20mA connection.
W&T Serial Fiber Optic Interfaces Applications A GND level signal on Pin 5 of the TTY connector will place the 20mA interface of the convertor in half-duplex mode whereby an echo of the sent signals is suppressed. The interface can be used as an active or passive 20mA component. In the active mode, the interface supplies the current required by the respective 20mA loop, while in the passive mode the loop current must be supplied by the connected device.
W&T Serial Fiber Optic Interfaces Technical data Baud rate: Transmitted signals: 0..19.
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W&T Serial Fiber Optic Interfaces Interface FO Bus <> RS485, #65210 Function The W&T Interface #65210 allows bi-directional conversion of an RS485 interface into a fiber optic bus interface with a transmission speed of up to 1,5 Mbps. The interface works independently of the data format used and converts one data line in each direction. Connectors The fiber optic cables are connected to the converter using ST series connectors, with a DB9 plug for the RS485 connection.
W&T Serial Fiber Optic Interfaces The pin configuration for the serial connector is shown in the following table, and may also be found on a sticker attached to the device: Pin# Function 1 data out A (-) 2 data in A (-) 5 signal GND 6 data out B (+) 7 data in B ( +) Termination For all RS485 operating modes it is essential that the bus system be terminated with a termination network which assures a defined rest state in the high-impedance phases of bus operation.
W&T Serial Fiber Optic Interfaces Operating mode The interface #65210 can be set for two different operating modes by DIP switch setting on the RS485 interface module. The selectable operating modes are briefly described here: RS485 4 wire application, automatic control One data channel in each direction is available.The RS485 output driver is activated automatically with each transmission of data, and goes to the high impedance state again after the end of transmission.
W&T Serial Fiber Optic Interfaces RS485 <> Fiber optic interface DOut A DOut B DIn A DIn B 1 6 2 7 RS485 <> Fiber optic interface Fiber optic bus system Bus A (-) Bus B (+) RS485 Slae RS485 61210 1 DOut A 6 DOut B 2 DIn A 7 DIn B Bus A (-) Bus B (+) RS485 Slave RS485 Bus A (-) Bus B (+) 61210 RS485 <> Fiber optic bus adapter DOut A DOut B DIn A DIn B 1 6 2 7 RS485 <> Fiber optic bus adapter Bus A (-) Bus B (+) RS485 Slave 65210 Bus A (-) Bus B (+) 1 DOut A 6 DOut B 2 DIn A 7 DIn B 6
W&T Serial Fiber Optic Interfaces Interface FO Bus <> Profibus, #65211 Function The W&T Interface #65211 allows bi-directional conversion of an profibus interface into a fiber optic bus interface with a transmission speed of up to 1,5 Mbps. The interface operates independent of the respective data format and converts the Profibus data into light signals which can be transmitted over a glass fiber optic cable.
W&T Serial Fiber Optic Interfaces The pin configuration for the serial connector is shown in the following table, and may also be found on a sticker attached to the device: Pin# Function 1 Shield 2 n.c. 3 RxD/TxD-P 4 CNTR-P 5 DGND 6 VP 7 n.c. 8 RxD/TxD-N 9 CNTR-N Termination Both ends of a Profibus segment must be terminated with a terminating network which is usually integrated into the Profibus connectors and can be optionally switched.
W&T Serial Fiber Optic Interfaces Technical data Operating mode: Switchover delay: Baud rate: Transmitted signals: RS485 2 wire mode with automatic control, without echo approx. 1µs from send to receive for RS485 automatic control (can be factory changed on request) 0..
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