80-000540

80-000540 Datasheet

80-000540

Part	Datasheet
80-000540	80-000540 (pdf)

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Critical Link, LLC FEATURES • PROFIBUS Protocol SoM Dependent - Certified by PI International - Electrically Isolated Interface - Up to 6Mbaud operation • RS485 Protocol - Electrically Isolated Interface - Up to 115,200 baud rate • On-Board termination resistor - Jumper selectable • Compatible with MityARM/MityDSP based Development Kits from Critical Link PROFIBUS / RS485 Expansion Kit 17 October 2012 x actual size DESCRIPTION The PROFIBUS/RS485 Expansion Kit is compatible with Critical Link’s line of MityARM/MityDSP based development kits one is required to interface with this expansion kit. Specific MityARM/MityDSP based System on Modules support PROFIBUS. All MityARM/MityDSP based System on Modules support RS485, see Table 1 for details concerning SoM support for PROFIBUS. Table 1 Critical Link SoM PROFIBUS Support Module Type PROFIBUS Support RS485 Support MityARM-1810 MityARM-1810F MityDSP-L138 MityDSP-L138F MityARM-1808 MityARM-1808F MityARM-3359 Copyright 2007-2012, Critical Link LLC Critical Link, LLC PROFIBUS / RS485 Expansion Kit 17 October 2012 PROFIBUS Interface Description Texas Instruments Inc. TI has integrated PROFIBUS functionality into its AM1810 Sitara ARM microprocessor MPU . The expansion kit utilizes one of the AM1810 onboard UARTS through the Expansion Header on the PROFIBUS DEVELOPMENT KIT base board. This eliminates the need of an external ASIC or FPGA to support the PROFIBUS interface. Customers using a supported SoM in their industrial application can save cost and reduce design complexity as well as PCB space. Furthermore, the industrial application benefits from the low-power architecture of the Sitara ARM MPU and the MityARM-1810 or MityDSP-L138 platforms from TI and Critical Link. The ARM MPU PROFIBUS Slave solution has been certified by PROFIBUS International PI . The PROFIBUS real-time frame handler Fieldbus Data Link or FDL is encapsulated in the Programmable Real-Time Unit Subsystem PRUSS , which is part of the Sitara ARM MPU on-chip peripherals. The PRUSS uses one Universal Asynchronous Receiver/Transmitter UART and a timer to generate PROFIBUS-compliant frames. The industrial application and the PROFIBUS DP-Protocol Layer 7 are operated on the ARM. The solution is completed with an RS-485 transceiver suitable for harsh environments, such as TI’s ISO1176 which is found on the PROFIBUS-RS485 Expansion Kit board. The PROFIBUS subsystem uses the PRUs that implement real-time frame handling PROFIBUS message transmission, frame validation and communication with the ARM processor. The PROFIBUS subsystem interfaces with one of the UARTs in the Sitara ARM MPU, which is designated for PROFIBUS communication at up to 6Mbaud data rate. The PRU uses interrupts to interact with the ARM where the PROFIBUS stack Layer 7, DP Protocol and the industrial application is run. All process data handling like cyclic, acyclic and service access point SAP between the PROFIBUS stack on ARM and the PRU is through the internal memory. Linux Driver and API examples are available to support PROFIBUS functionality. Additional details about PROFIBUS support can be found on TI’s website RS485 Interface Description When using any of the Critical Link MityARM/MityDSP based System on Modules Som the RS485 protocol is supported. When paired with our MityARM/MityDSP based development kits the RS485 Expansion Kit can be seamlessly added to your design. A data rate of up to 115,200 baud is supported through this interface. Linux Driver and API examples are available to support RS-485 functionality. Copyright 2007-2012, Critical Link LLC Critical Link, LLC PROFIBUS / RS485 Expansion Kit 17 October 2012 PROFIBUS / RS-485 Electrical Description The PROFIBUS/RS-485 Expansion Kit provides standard serial interface at data rates up to 115,200 baud. The serial interface is routed to the UART2 serial port of MityARM / MityDSP through the Expansion Header on a MityARM/MityDSP based Development Kit. The galvanic isolation is provided by a dedicated TI ISO1176 transceiver. The ISO1176 is powered by an isolated power supply with 1000V isolation from the primary supply. Jumper JP500 can provide a dedicated 220 ohm bus termination resistor. If the interface is to be configured to support PROFIBUS, JP501, JP502 and JP505 should be installed. In the RS-485 configuration JP501 and JP505 should be installed and JP502 removed. The electrical interface between the PROFIBUS/RS485 Expansion Kit and MityARM/MityDSP based Development Kit is provided via the 10-pin shrouded header described in Table The electrical in between the PROFIBUS/RS485 Expansion Kit and an external device is provided via the 9-pin DB0 connector described in Table Please reference your specific MityARM/MityDSP Based Development Kit documentation to determine which connector to use for the PROFIBUS/RS485 Expansion Kit. Copyright 2007-2012, Critical Link LLC Critical Link, LLC PROFIBUS / RS485 Expansion Kit 17 October 2012 PROFIBUS/RS485 Expansion Kit Pinouts Table 2 shows the input 10-pin shrouded header pin out for the PROFIBUS/RS485 Expansion Kit input header. This connector, J504, is the interface to the MityARM/MityDSP based development kit. Table 2 PROFIBUS/RS485 Expansion Kit 10-Pin Header Pin Out ORDERING INFORMATION The following table lists the orderable module configurations. For shipping status, availability, and lead time of these or other configurations please contact your Critical Link representative. The necessary 10-pin cable to connect to a MityARM/MityDSP based Development Kit is provided with each PROFIBUS/RS485 Expansion Kit. Table 4 Orderable Model Numbers Model Protocol s Supported 80-000540 PROFIBUS/RS485 MECHANICAL INTERFACE A mechanical outline of the PROFIBUS/RS485 Board is illustrated below. Figure 1 Dimensions x Date 13-MAR-2012 10-OCT-2012 17-OCT-2012 Copyright 2007-2012, Critical Link LLC

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Critical Link, LLC

FEATURES
• PROFIBUS Protocol SoM Dependent - Certified by PI International - Electrically Isolated Interface - Up to 6Mbaud operation
• RS485 Protocol - Electrically Isolated Interface - Up to 115,200 baud rate
• On-Board termination resistor - Jumper selectable
• Compatible with MityARM/MityDSP based Development Kits from Critical Link

PROFIBUS / RS485 Expansion Kit 17 October 2012
x actual size

DESCRIPTION The PROFIBUS/RS485 Expansion Kit is compatible with Critical Link’s line of MityARM/MityDSP based development kits one is required to interface with this expansion kit. Specific MityARM/MityDSP based System on Modules support PROFIBUS. All MityARM/MityDSP based System on Modules support RS485, see Table 1 for details concerning SoM support for PROFIBUS.

Table 1 Critical Link SoM PROFIBUS Support

Module Type

PROFIBUS Support RS485 Support

MityARM-1810

MityARM-1810F

MityDSP-L138

MityDSP-L138F

MityARM-1808

MityARM-1808F

MityARM-3359

Copyright 2007-2012, Critical Link LLC

Critical Link, LLC

PROFIBUS / RS485 Expansion Kit 17 October 2012

PROFIBUS Interface Description Texas Instruments Inc. TI has integrated PROFIBUS functionality into its AM1810 Sitara ARM microprocessor MPU . The expansion kit utilizes one of the AM1810 onboard UARTS through the Expansion Header on the PROFIBUS DEVELOPMENT KIT base board. This eliminates the need of an external ASIC or FPGA to support the PROFIBUS interface. Customers using a supported SoM in their industrial application can save cost and reduce design complexity as well as PCB space. Furthermore, the industrial application benefits from the low-power architecture of the Sitara ARM MPU and the MityARM-1810 or MityDSP-L138 platforms from TI and Critical Link. The ARM MPU PROFIBUS Slave solution has been certified by PROFIBUS International PI .

The PROFIBUS real-time frame handler Fieldbus Data Link or FDL is encapsulated in the Programmable Real-Time Unit Subsystem PRUSS , which is part of the Sitara ARM MPU on-chip peripherals. The PRUSS uses one Universal Asynchronous Receiver/Transmitter UART and a timer to generate PROFIBUS-compliant frames. The industrial application and the PROFIBUS DP-Protocol Layer 7 are operated on the ARM. The solution is completed with an RS-485 transceiver suitable for harsh environments, such as TI’s ISO1176 which is found on the PROFIBUS-RS485 Expansion Kit board.

The PROFIBUS subsystem uses the PRUs that implement real-time frame handling PROFIBUS message transmission, frame validation and communication with the ARM processor. The PROFIBUS subsystem interfaces with one of the UARTs in the Sitara ARM MPU, which is designated for PROFIBUS communication at up to 6Mbaud data rate. The PRU uses interrupts to interact with the ARM where the PROFIBUS stack Layer 7, DP Protocol and the industrial application is run. All process data handling like cyclic, acyclic and service access point SAP between the PROFIBUS stack on ARM and the PRU is through the internal memory.

Linux Driver and API examples are available to support PROFIBUS functionality.

Additional details about PROFIBUS support can be found on TI’s website

RS485 Interface Description When using any of the Critical Link MityARM/MityDSP based System on Modules Som the RS485 protocol is supported. When paired with our MityARM/MityDSP based development kits the RS485 Expansion Kit can be seamlessly added to your design.

A data rate of up to 115,200 baud is supported through this interface. Linux Driver and API examples are available to support RS-485 functionality.

Copyright 2007-2012, Critical Link LLC

Critical Link, LLC

PROFIBUS / RS485 Expansion Kit 17 October 2012

PROFIBUS / RS-485 Electrical Description The PROFIBUS/RS-485 Expansion Kit provides standard serial interface at data rates up to 115,200 baud. The serial interface is routed to the UART2 serial port of MityARM / MityDSP through the Expansion Header on a MityARM/MityDSP based Development Kit.

The galvanic isolation is provided by a dedicated TI ISO1176 transceiver. The ISO1176 is powered by an isolated power supply with 1000V isolation from the primary supply.

Jumper JP500 can provide a dedicated 220 ohm bus termination resistor.

If the interface is to be configured to support PROFIBUS, JP501, JP502 and JP505 should be installed.

In the RS-485 configuration JP501 and JP505 should be installed and JP502 removed.

The electrical interface between the PROFIBUS/RS485 Expansion Kit and MityARM/MityDSP based Development Kit is provided via the 10-pin shrouded header described in Table

The electrical in between the PROFIBUS/RS485 Expansion Kit and an external device is provided via the 9-pin DB0 connector described in Table

Please reference your specific MityARM/MityDSP Based Development Kit documentation to determine which connector to use for the PROFIBUS/RS485 Expansion Kit.

Copyright 2007-2012, Critical Link LLC

Critical Link, LLC

PROFIBUS / RS485 Expansion Kit 17 October 2012

PROFIBUS/RS485 Expansion Kit Pinouts Table 2 shows the input 10-pin shrouded header pin out for the PROFIBUS/RS485 Expansion Kit input header. This connector, J504, is the interface to the MityARM/MityDSP based development kit.

Table 2 PROFIBUS/RS485 Expansion Kit 10-Pin Header Pin Out
ORDERING INFORMATION

The following table lists the orderable module configurations. For shipping status, availability, and lead time of these or other configurations please contact your Critical Link representative.

The necessary 10-pin cable to connect to a MityARM/MityDSP based Development Kit is provided with each PROFIBUS/RS485 Expansion Kit.

Table 4 Orderable Model Numbers

Model

Protocol s Supported
80-000540

PROFIBUS/RS485

MECHANICAL INTERFACE A mechanical outline of the PROFIBUS/RS485 Board is illustrated below.

Figure 1 Dimensions x

Date 13-MAR-2012 10-OCT-2012 17-OCT-2012

Copyright 2007-2012, Critical Link LLC

Notice: we do not provide any warranties that information, datasheets, application notes, circuit diagrams, or software stored on this website are up-to-date or error free. The archived 80-000540 Datasheet file may be downloaded here without warranties.

Datasheet ID: 80-000540 507034