VT485r / OSDPv2 reader extension slot

 

 

Function and purpose

The VT485r is an extension PCB board that allows for the connection of readers and keypads that support the OSDP protocol. This board is compatible with Vutlan monitoring systems, including VT335t, VT336t, VT825t, and VT855t. It can be installed while the unit is in operation, providing flexibility and minimizing downtime. The board comes with an internal termination that is switched on by default, which can be turned off if needed.

The VT485r supports various devices such as SE mini reader and other third-party OSDP readers or keypads, making it a versatile tool for integrating access control into Vutlan monitoring systems.

Technical specification

Function & Purpose

Description

Function & Purpose

Description

Device type:

Extension PCB slot

Used for:

For connecting readers, keypads to Vutlan monitoring systems.

Max. readers:

We recommend connecting up to x4 readers. See the diagram in the section “Connect readers/keypads to VT485r”. Up to x2 readers using internal system power supply.

 

 

Communications

Description

Control:

In the Vutlan web interface

Interface:

OSDPv2

Wiring & distance:

Readers installed up to 1000 m from VT485r

Inputs/Outputs:

4P4C, RS-485

 

 

Environmental

Description

Operating temperature

Optimal temperature range: -10° C to +80° C

Operating humidity

0 to 95 % (non-condensing)

 

 

General

Description

Manufactured in:

Slovak Republic, E.U., by Vutlan s.r.o.

HS code:

8517 69 90

GTIN:

8588009886327

Drawing / Dimensions

VT485R OSDPv2 slot extension reader keypad Vutlan drawings-01.jpg

Physical description

a) "Status" - LED for displaying VT485r status.

LED color

Description

Red

Sending signal

Blue

Receiving signal

Red - send

Blue - receive

b) “+12V, A+, B-, GND“ - VT485r port with RS485 pins

Installation of VT485r

This procedure can be done during an operational Vutlan monitoring unit.

Step

Picture

Description

Step

Picture

Description

1

 

 

Unscrew the small panel on the monitoring unit using the screw driver. Put the panel aside.

2

Plugin VT485r PCB into the unit so that the PCB will placed between the PCB guide rails.

 

3

Take the panel from step 1 and cut off the panel inside it using pliers.

4

Mount the panel back to the unit using the screw driver.

Activate VT485r

Step

Picture

Description

Step

Picture

Description

1

Open Vutlan web Interface of your system.

Go to panel “Preferences” >> tab “OSDP”.

If the Extension VT485r is connected, you should see the the element “VT485R OSDP reader board

Tick “Enable OSDP” >> press “Save”.

Connect readers/keypads to VT485r

You can connect the following OSDPv2 readers/keypads/devices:

Usually, OSDPv2 is back-compatible with OSDPv1 devices. However, each such device needs to be tested.

  1. We recommend connecting no more than x2 devices/readers powering from VT485r. If you power too many devices, a fuse inside the monitoring unit will activate and it will power down the monitoring system.

  2. Terminate B(-) and A(+) end of the line with a 120 Ohm resistor.

  3. VT485r PCB has 120Ohm resistor termination.

  4. Use only twisted pair cables for B(-) and A(+) conductors.

Add RFID virtual element (e.g. SE mini reader)

To add a reader to the system, we need to create an “RFID reader” virtual element.

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Illustration

Description

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Illustration

Description

1

Go to “System tree” panel >> press “+” at the top panel.

A model window “Add new element” will pop up.

Scroll down and press “RFID reader”.

 

2

 

Fill in the data >> press “OK” to add the reader

Parameter

Description

Parameter

Description

Name

Any distinguishable name you want

Initial baud rate

9600

Initial address

0

Initial key

303132333435363738393a3b3c3d3e3f

Address

15, all readers should have a different address

Key

00000000000000000000000000000015

#

Picture

Description

#

Picture

Description

3

The reader is added.

Parameter

Description

Parameter

Description

Name

Any distinguishable name you want

ID

given by the system automatically

Type: osdp reader

given by the system automatically

Class: devhwr

given by the system automatically

Current state

“RFID reader not connected” - the reader is disconnected

“Waiting for reading” - operating

Address

15

Key

00000000000000000000000000000015

Adding the RFID cards

Adding an RFID card with a known

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Picture

Description

<

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Picture

Description

1