W&T 18801 User manual

51
W&T Interface modules
Subject to error and alteration
Manual
Interface modules
Model 18801, 18811
18802, 18812
18803, 18813
18601, 18611
18602, 18612
18401, 18411
18402, 18412
18101, 18111
18120, 18121
18311
Version 1.4
W&T

52
W&T Interface modules
© 07/2006 by Wiesemann und Theis GmbH
Subject to error and alteration:
Since it is posssible 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. We are
not liable for unauthorized repairs or tampering. When in
doubt, check first with us or with your dealer.

53
W&T Interface modules
Subject to error and alteration
The modular design of all W&T Com-Servers as well as most of
the W&T PC cards allows them to be equipped with
various serial interface types.
Modification of the standard units is accomplished by
simply exchanging the existing interface modules with
modules of the desired interface type.
The W&T interface module family is described on the
following pages along with the corresponding technical data
and including connection examples.
For up-to-date information on new developments, see our
Internet site at http://www.wut.de or check the e-mail short
notices at the W&T Interface Club, which you can also
subscribe to from the W&T Homepage.

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W&T Interface modules
Index
Inhalt
Common characteristics and mechanical details ................... 55
RS232 DTE Interface Modules, Model 188x1 ......................... 57
RS232 DCE Interface Modules, Model 188x2 ......................... 59
RS232/RS422/RS485 Interface Modules, Model 188x3 .......... 61
RS422/RS485 Interface Modules, Model 186x1 ..................... 69
Profibus Interface Modules, Model 186x2 ............................ 77
20mA Interface Modules, Model 184x1 ................................ 81
20mA Interface Modules, Model 184x2 ................................ 85
POF Interface Modules, Model 181x1 ................................... 89
Fiber Optic Interface Modules, Model 1812x ........................ 93
USB Interface Module, Model 18311 ..................................... 97

55
W&T Interface modules
Subject to error and alteration
Common characteristics and mechanical details
Many W&T Interfaces are characterized by modular construction
with a strict division into basic and interface electronics, so that
changing out the integrated, plug-in Interface Modules allows
you to freely select the interface type for the device.
In addition you can use the W&T Interface Modules to equip
third-party devices which only have a serial TTL interface with
various standard interfaces: RS232, RS422, RS485, 20mA,
plastic fiber optics, glass fiber optics and USB.
There are two different series of W&T Interface Modules (series
18x0x and 18x1x) which differ only in the arrangement of the
connector for the serial TTL port, but which are otherwise
identical in function.
All W&T Interface Modules have a 12-pin 2mm header and a
central hole for screwing the module to the associated mother-
board. The pin configuration for the TTL interface can be found
in the corresponding sections for the individual Module
descriptions.
The position of pin 1 of the header, which is additionally
indicated by a square solder pad, as well as the numbering
order of the connector pins, can be seen for both Module
series in the following diagram:
18x0x
16
7
12
18x1x
16
7
12

56
W&T Interface modules
Dimensional drawing
The following drawing indicates the dimensions of the Module
as well as the position of the connectors and attachment
points. Shown in the drawing is the Combi-Module 18833, but
the dimensions apply to all Modules with SUB-D connector.
Important installation note
When installing or replacing the Interface Modules, visually
inspect to ensure that the module does not cause a short
circuit with adjacent components. To use the Interface
Modules with W&T PC cards, remove the wire jumper between
the SUB-D male connector housing and the module. Otherwise
the galvanic isolation between the interface and the PC may be
defeated.
1

57
W&T Interface modules
Subject to error and alteration
RS232 DTE Interface Modules, #188x1
Function
The W&T Interface Modules 18801 and 18811 provide an
RS232 DTE interface for devices equipped with a serial TTL port.
The modules support all RS232 data and handshaking signals.
Modules 18801 and 18811 differ only in the arrangement of
the post connector for the serial TTL port, and are in every
other respect functionally identical.
Important installation note
When installing or replacing the Interface Modules, visually
inspect to ensure that the module does not cause a short
circuit with adjacent components. To use the Interface Modu-
les with W&T PC cards, remove the wire jumper between the
SUB-D male connector housing and the module. Otherwise the
galvanic isolation between the interface and the PC may be
defeated.
Supply voltage
The Interface Modules require a regulated supply voltage of
5V DC ±5%. The no-load current draw of the modules is
approx. 30mA (typ.); any additional current requirement from
an external load must of course be taken into account when
dimensioning the power supply.
Protection against static charges
All external signal lines use ESD-immune interface components
to provide protection against static discharges of up to 15kV
per IEC 801-2, Level 4.
1

58
W&T Interface modules
Pin configuration
The RS232 connection for the modules is configured as a
9-pin male SUB-D connector, with the TTL interface formatted
as 12-pin male post connector. Refer to the following
table for connector pin assignments:
TTL interface RS232 interface
pin# signal function
1 5V ±5% Vcc
2 RI output
3 RxD output
4 TxD input
5 n.c. n.c.
6 CTS output
7 DTR input
8 DSR output
9 RTS input
10 DCD output
11 12V ±10% n.c.
12 GND signal GND
Pin 1 of the TTL interface is indicated by a rectangular soldering pad.
Technical Data
Baud rate: 0..230 KBaud
Data format: any
Supported signals: RxD, TxD, RTS, CTS, DSR, DCD, DTR, RI
ESD immunity: up to 15kV per IEC 801-2,
Level 4 using ESD-immune
interface components
Supply voltage: 5V DC ±5%
Supply current: approx. 30mA
TTL connector: 12-pin, 2mm post connector
RS232 connector: 9-pin male SUB-D connector
Dimensions: 43 x 31 mm
Weight: approx. 10g
Packing list: RS232 DTE Interface Module
pin# signal function
1 DCD input
2 RxD input
3 TxD output
4 DTR output
5 GND GND
6 DSR input
7 RTS output
8 CTS input
9 RI input

59
W&T Interface modules
Subject to error and alteration
RS232 DCE Interface Modules, #188x2
Function
The W&T Interface Modules 18802 and 18812 provide an
RS232 DCE interface for devices equipped with a serial TTL port.
The modules support all RS232 data and handshaking signals.
Modules 18802 and 18812 differ only in the arrangement of
the post connector for the serial TTL port, and are in every
other respect functionally identical.
Important installation note
When installing or replacing the Interface Modules, visually
inspect to ensure that the module does not cause a short
circuit with adjacent components.
Supply voltage
The Interface Modules require a regulated supply voltage of
5V DC ±5%. The no-load current draw of the modules is
approx. 30mA (typ.); any additional current requirement from
an external load must of course be taken into account when
dimensioning the power supply.
Protection against static charges
All external signal lines use ESD-immune interface components
to provide protection against static discharges of up to 15kV
per IEC 801-2, Level 4.
1

60
W&T Interface modules
Pin configuration
The RS232 connection for the modules is configured as a
9-pin female SUB-D connector, with the TTL interface formatted
as 12-pin male post connector. Refer to the following
table for connector pin assignments:
TTL interface RS232 interface
pin# signal function
1 5V ±5% Vcc
2 RI input
3 TxD output
4 RxD input
5 n.c. n.c.
6 DTR output
7 CTS input
8 DSR input
9 RTS output
10 DCD input
11 12V ±10% n.c.
12 GND signal GND
Pin 1 of the TTL interface is indicated by a rectangular soldering pad.
Technical Data
Baud rate: 0..230 KBaud
Data format: any
Supported signals: RxD, TxD, RTS, CTS,
DSR, DCD, DTR, RI
ESD immunity: up to 15kV per IEC 801-2,
Level 4 using ESD-immune
interface components
Supply voltage: 5V DC ±5%
Supply current: approx. 30mA
TTL connector: 12-pin, 2mm post connector
RS232 connector: 9-pin female SUB-D connector
Dimensions: 43 x 31 mm
Weight: approx. 10g
Packing list: RS232 DCE Interface Module
pin# signal function
1 DCD output
2 RxD output
3 TxD input
4 DTR input
5 GND GND
6 DSR output
7 RTS input
8 CTS output
9 RI output