Phoenix Contact RAD-RS485-IFS User manual

© PHOENIX CONTACT 2018-06-06
107967_en_01
I/O mapping
Application note
1Description
This application note describes an I/O communication solu-
tion for company-internal 2-wire cables, e.g., telephone
cable or master cable. The range covered is up to
20 kilometers.
Extension modules receive the I/O signals. The signals are
then transmitted to the SHDSL extender via an RS-485 front
module.
The white thumbwheel on the extension modules is used to
set the I/O MAP address. Programming knowledge is not re-
quired.
You need the following:
Description Order No. Designation Link to product
RS-485 front module 2702184 RAD-RS485-IFS phoenixcontact.net/product/2702184
I/O extension module 2901535 RAD-DI4-IFS phoenixcontact.net/product/2901535
2901536 RAD-DOR4-IFS phoenixcontact.net/product/2901536
SHDSL extender 2313669 PSI-MODEM-SHDSL/SERIAL phoenixcontact.net/product/2313669
Programming cable 2903447 RAD-CABLE-USB phoenixcontact.net/product/2903447
Latest PSI-CONF software as of V2.50
Make sure you always use the latest documentation.
It can be downloaded using the links provided above.
Simple I/O communication via 2-wire cables

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Table of contents
1 Description..................................................................................................................................1
2 Safety notes................................................................................................................................2
3 Installation ..................................................................................................................................2
4 Schematic view...........................................................................................................................3
5 Setting the thumbwheel ..............................................................................................................3
6 Configuring the SHDSL extender................................................................................................4
7 Increasing timeout for the front modules ...................................................................................10
2Safetynotes
This application note does not replace the device-specific
documents. Please follow the safety notes in the associated
packing slips for the devices.
3 Installation
Figure 1 Installing the DIN rail connector
For the schematic view, please refer to the next page.
•Mount the RS-485 front module and the I/O extension
module onto the DIN rail connector as described in the
packing slip.
The DIN rail connector is used to bridge the power supply
and communication. A separate power supply or data cable
is therefore not required for the I/O extension module.
•Install the SHDSL extender as described in the packing
slip.
WARNING: Explosion hazard when used in
potentially explosive areas
Please follow the safety notes in the associated
packing slips for installation in Zone 2.
In potentially explosive areas, only snap the de-
vice on or off the DIN rail connector and connect
or disconnect cables when power is disconnect-
ed.
The switches of the device that can be accessed
may only be actuated when the power supply to
the device is disconnected.
A
B
C

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4 Schematic view
Figure 2 Schematic view
5 Setting the thumbwheel
Use the thumbwheel on the front to address the wireless
modules and the extension modules.
Front module
•The role of the master and slave must be assigned in or-
der for the front modules to communicate.
– The master address is 01.
– The slave address is between 02 ... 99 (02 in our
example).
I/O extension modules
•Set the same address (e.g., 88) on both extension mod-
ules. In this way, the inputs are assigned the corre-
sponding outputs.
Table 1 RS-485 interface
RAD-RS485-IFS
front module
PSI-MODEM-SHDSL/SERIAL
SHDSL extender
Port 4.1 Port 3
Port 4.2 Port 4
Table 2 SHDSL interface
SHDSL extender 1 SHDSL extender 2
Port A (a and b1)
1Connect a and b as desired.
Port B (a and b1)

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6 Configuring the SHDSL extender
•Connect the SHDSL extender to the PC using a USB
cable.
•Start the PSI-CONF software.
•Select the SHDSL extender.
Figure 3 Selecting the device
•Click “Online Configuration” for device configuration.
Figure 4 Online configuration
Use the latest version of the PSI-CONF software. Download the latest software at
phoenixcontact.net/product/2313669.

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•Create a new project file. This file can be used as a
backup file in case you need to replace an SHDSL
extender.
•Select “Point-to-point wizard” to set up a point-to-point
connection.
Figure 5 Point-to-point wizard
•In step 2, enter a name for the SHDSL extender.
Figure 6 Assigning the device name

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•In step 3, set the parameters for the SHDSL line. Enter
the following values for the example on Page 2.
– Length of the 2-wire cable: 5000 meters
–Diameter:0.5mm
The software calculates an expected data rate of 534 kbps.
This value is high enough for I/O mapping. Usually, much
lower data rates are required.
There are two different modes to set the SHDSL rate:
–Automatic
–Manual
•Select automatic mode.
Figure 7 Configuring the SHDSL line
The calculated data rate only is a guide value. It
may differ considerably in practice. The following
factors may influence the data rate:
– Twisting of the cables
– State of the cables
–Insulation
– Contact resistance
– External errors

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•In step 4, the serial interface can be configured. Select
the following values for the two SHDSL extenders:
– Interface type: RS-485
–Parity:Even
– Baud rate (bps): 19200
– Stop bits: 1
–Databits:8
•Click “Accept settings for all devices”.
Figure 8 Configuring the serial interface

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•In step 5, the switching outputs can be configured. If
external errors, for example, influence the transmission
negatively, the switching output may trigger a warning.
Figure 9 Configuring the switching outputs

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Step 6 provides an overview of all the settings.
Figure 10 Checking the settings
The last step is used to transfer the settings to the devices.
•Click “Transfer”. Wait until the transfer is complete.
•Connect the USB cable to the second SHDSL extend-
er.
•Click “Transfer”.
Figure 11 Transferring the settings to the SHDSL extender
Configuration of the two SHDSL extenders is now complete.

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7 Increasing timeout for the front
modules
The transmission rate for the data packets is slower via the
SHDSL connection than via a direct connection between
the two RS-485 front modules.
To avoid timeout error messages, the timeout period must
be increased for both front modules.
•Use the RAD-CABLE-USB USB cable (Order No.
2903447) for that purpose.
•Connect the front module to the PC using the USB
cable.
•Start the PSI-CONF software.
•Select the front module.
Figure 12 Selecting the device
WARNING: Explosion hazard when used in
potentially explosive areas
The USB cable is not suitable for use in potential-
ly explosive areas.
– Use the USB cable in safe areas only.

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•Click “Local Device (Modbus mode)”.
•Click “Read”.
•An online mode message appears. Click “OK”.
•Save the project to the PC.
Figure 13 Creating a project
•Click “Edit in Individual Settings”.
Figure 14 Editing the individual settings

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•Switch to the “Serial Port” tab.
•Set the following:
– Master Timeout Offset: 300 ms
– Time Between Polls: 200 ms
•Click “Transfer”.
Figure 15 Entering the timeout
•Transfer the values to the front module.
Figure 16 Transferring the settings to the front module
•Wait until the transfer is complete.
•Connect the USB cable to the second front module.
•Repeat all the steps to increase the timeout for the sec-
ond front module (from Page 10).