INDU-RS

Overview

Yantrr INDU-RS series of capes provide the capability of interfacing with sensors and instruments using RS232/422/485. These capes are designed to industrial grade I/O interface standards assuring reliable operation and protection in extreme operating environments. The electronics on the capes has been tested to be in compliance with strict EU standards for radiated and conducted emissions.

Utilizing Modbus protocol, these capes can be used to transform VIBE/VIBE2 IoT platform into powerful SCADA & process control systems. INDU-RS capes are also fully compatible with BeagleBone CPU platform.

Quick Start Guide

Following sections gives details of board connectors, pin configuration and various jumpers on INDU-RS3HD, INDU-RS3HD-DC15W boards.

Board Connectors Layout

INDU-RS3HD	INDU-RS3HD-DC15W

Pin Connections

Note: INDU-RS485 Headers P6 & P7 correspond to Beaglebone Black [BB] Header P8 & P9 respectively.

Jumper Details

Getting Started

Setting up the system

1. Mount the INDU-RS cape on Beaglebone Black or Yantrr's VIBE/VIBE2 platform carefully.
2. Ensure all the jumpers are in place according to your application use.
3. Now power up the full setup

For INDU-RS3HD

You have to supply 5V DC power supply to Beaglebone Black or VIBE/VIBE2.

Using Beaglebone Black	Using VIBE/VIBE2

For INDU-RS3HD-DC15W 

You have two option for supplying power:

• 9V-24V DC power through terminal headers supplied to INDU-RS cape

Using Beaglebone Black	Using VIBE/VIBE2

• 5V DC power through normal adapter supplied to Beaglebone Black or VIBE/VIBE2
  Note : For this option, before powering up remove the jumper J1

Using Beaglebone Black	Using VIBE/VIBE2

Software Setup Guide

• INDU-RS3HD, INDU-RS3HD-DC15W

Software Images

The INDU-RS series capes are tested with latest-release image from beagleboard.org which has inbuilt support for OMAP internal UART (8250 based driver).
Currently INDU-RS485 cape is tested with beaglebone black kernel version 4.4.40-ti-r80.
For Beaglebone Black, we recommend to use latest Debian image from http://beagleboard.org/latest-images/ as it comes with all the necessary support for OMAP internal UART (8250 based driver).

Device Tree Overlays

For particular RS485 port two dtbo files are there

1. BB-UART*-00A0.dtbo
2. BB-UART*-RTSCTS-00A0.dtbo

Note : * represents the particular port no. of UART used in respective RS485 port. For example, for RS485-Port1 it will be UART4.

The BB-UART*-00A0.dtbo file defines the TX and RX pin configuration of particular UART port. While BB-UART*-RTSCTS-00A0.dtbo file defines the RTS and CTS pin configuration of UART port.

For sending data from any RS485 port, both dtbo files(BB-UART & BB-UART-RTSCTS) of associated UART port should be exported to slots before actual sending of data.

For reading data from any RS485 port, only BB-UART dtbo file is sufficient to get data from associated UART port.

The device tree overlays are compiled as per instructions listed in link https://github.com/RobertCNelson/bb.org-overlays.

Steps:

• Clone the repo

git clone https://github.com/beagleboard/bb.org-overlays
cd ./bb.org-overlays

• Verify the dtc version should be latest one

dtc --version
Version: DTC 1.4.1-gXYZXYZXYZ

• Upgrade the dtc

./dtc-overlay.sh

• Copy Yantrr-RS485 dts files after extracting ytrDTS.tar.gz file in root directory

cp /root/ytrDTS/src/BB-UART* ./src/arm/

• Install *.dtbo

./install.sh

Note: This will copies all the dtbo files after compilation automatically in directory /lib/firmware/

• capemgr: enable/disable capes on kernel cmdline:
  Comma delimited list of PART-NUMBER[:REV] of [enabled/disabled] capes
  bone_capemgr.enable_partno=
  bone_capemgr.disable_partno=
• capemgr: enable/disable capes with slots:

root@beaglebone:~# cat /sys/devices/platform/bone_capemgr/slots
 0: PF----  -1
 1: PF----  -1
 2: PF----  -1
 3: PF----  -1

• Add Device :

root@beaglebone:~# sh -c "echo 'BB-UART4' > /sys/devices/platform/bone_capemgr/slots"
root@beaglebone:~# cat /sys/devices/platform/bone_capemgr/slots
 0: PF----  -1
 1: PF----  -1
 2: PF----  -1
 3: PF----  -1
 4: P-O-L-   0 Override Board Name,00A0,Override Manuf,BB-UART4

• Remove Device:

root@beaglebone:~# sh -c "echo '-4' > /sys/devices/platform/bone_capemgr/slots"
root@beaglebone:~# cat /sys/devices/platform/bone_capemgr/slots
 0: PF----  -1
 1: PF----  -1
 2: PF----  -1
 3: PF----  -1