Материал: m013209e

RS232C Interface, TTY Interface -20 mA Current Loop

RS485C Interface

PN 750-650, 750-651, 750-653, 750-650/000-001

Technical Description:

This technical description is only valid for hardware and software versions X X X X 2 C 0 3----. The product series number is printed on the right side of the module.

The operational mode described below is the presetting.

The following description is preliminary and is applicable to the factory configuration. Many other operational modes are possible (please contact WAGO for the corresponding settings).

Attention:

Some modules do not provide all power jumper contacts (e.g. 4-channel)! A module which needs all contacts (e.g. 2 channel digital) cannot be connected to the right hand side of modules which do not have 3 power jumper contacts.

The interface module is able to run with all WAGOÇI/OÇSYSTEM buscouplers (except for the economy type).

:$*2Ç, 2Ç6<67(0

:$*2Ç, 2Ç6<67(0

Description of RS 232:

The interface module is designed to operate with all WAGO I/O fieldbus couplers. The serial interface module allows the connection of RS 232-Interface devices to the WAGO I/O SYSTEM. The RS 232 Interface module can provide gateways within the fieldbus protocol. This allows serial equipment such as printers, barcode readers, and links to local operator interfaces to communicate directly by the fieldbus protocol with the PLC or PC Master.

This module supports no higher level of protocol. Communication is made completely transparent to the fieldbus allowing flexibility in further applications of the serial interface module. The communication protocols are configured at the Master PLC or PC.

The 128 byte input buffer provides for high rates of data transmission. When using lower rates of transmission speed you can collect the received data, with less priority, without loosing data.

The 16 byte output buffer provides for faster transmission of larger data strings.

FUNCTION The data transmission takes place at 9.600 baud (default value). 1 startbit, 8 databits and 1 stopbit will be transmitted. No parity is available. The user controls data via the RTS and CTS signals. These signals are generated in the module depending on the loading status of the buffers. These controls can be deactivated by means of an external jumper. RTS and CTS are to be connected.

For testing purposes the Windows 3.11 terminal emulation can be used. A cable with a 9- pole sub-D socket is required. Pin 5 is connected to input M. Pin 2 is connected to TxD and Pin 3 to RxD. RTS and CTS of the module are connected. A hardwarehandshake between terminal emulation and SPS is not possible though.

Figure 2: Data Word Signal

:$*2Ç, 2Ç6<67(0

Description of TTY:

The interface module is designed to operate with all WAGO I/O fieldbus couplers. The TTY interface module allows the connection of TTY-Interface devices to the WAGO I/O SYSTEM. The TTY Interface module can provide gateways within the fieldbus protocol. This allows serial equipment such as printers, barcode readers, and links to local operator interfaces to communicate directly by the fieldbus protocol with the PLC or PC Master.

This module supports no higher level of protocol. Communication is made completely transparent to the fieldbus allowing flexibility in further applications of the serial interface module. The communication protocols are configured at the Master PLC or PC.

The 128 byte input buffer provides for high rates of data transmission. When using lower rates of transmission speed you can collect the received data, with less priority, without loosing data.

The 16 byte output buffer provides for faster transmission of larger data strings.

FUNCTION

The data transmission takes place at 9600 baud (default value). 1 startbit, 8 databits and 1 stopbit will be transmitted. No parity is available. The drivers are high ohmic. The control of data is made by the user software.

The TTY Interface is passive in sending and receiving , thus having no current sources. For data conversion an active partner is needed or an additional current source has to be connected.

:$*2Ç, 2Ç6<67(0

Description of RS 485:

The interface module is designed to operate with all WAGO I/O fieldbus couplers. The serial interface module allows the connection of RS485 or RS488-Interface devices to the WAGO I/O SYSTEM. The RS485/RS488 Interface module can provide gateways within the fieldbus protocol. This allows serial equipment such as printers, barcode readers, and links to local operator interfaces to communicate directly by the fieldbus protocol with the PLC or PC Master.

This module supports no higher level of protocol. Communication is made completely transparent to the fieldbus allowing flexibility in further applications of the serial interface module. The communication protocols are configured at the Master PLC or PC.

The 128 byte input buffer provides for high rates of data transmission. When using lower rates of transmission speed you can collect the received data, with less priority, without loosing data.

The 16 byte output buffer provides for faster transmission of larger data strings.

FUNCTION The data transmission takes place at 9,600 baud (default value). 1 startbit, 8 databits and 1 stopbit will be transmitted. No parity is available. The drivers are high ohmic. The control of data is made by the user software.

The interface module can be used for bus connections as well as for point to point connections. With bus connections, modules that are not connected to the power supply can also be wired. They do not disturb the bus connection.

:$*2Ç, 2Ç6<67(0