Kramer SL-280 User manual

P/N: 2900-300567 Rev 1 www.KramerAV.com
USER MANUAL
MODEL:
SL-280
Master / Room Controller
Kramer Control Brain

SL-280 – Introduction
i
Contents
Introduction 1
Getting Started 1
Overview 2
Typical Applications 3
Controlling your SL-280 3
Defining the SL-280 Master / Room Controller Kramer Control Brain 4
Installing in a Rack 6
Connecting SL-280 7
Connecting the Relay Ports 8
Remote Operation via the Web Pages 9
Loading and Saving Configurations 10
Viewing Connected Clients Information 11
Modifying Device Settings 11
Defining IP Settings 13
Configuring the Serial Ports 14
Configuring I/O Ports 15
Changing the State of a Relay Port 19
Teaching IR Commands 20
Activating Device Security 21
Using the Log 23
About Us Page 24
Resetting and Upgrading Firmware 25
Resetting to Factory Default Settings 25
Upgrading the Firmware 25
Technical Specifications 26
Default Communication Parameters 27
Default Security Parameters 27
Protocol 3000 28
Understanding Protocol 3000 29
Kramer Protocol 3000 Syntax 30
Protocol 3000 Commands 31
License Information 61

Kramer Electronics Ltd.
SL-280 – Introduction
1
Introduction
Welcome to Kramer Electronics! Since 1981, Kramer Electronics has been providing a world of
unique, creative, and affordable solutions to the vast range of problems that confront the video,
audio, presentation, and broadcasting professional on a daily basis. In recent years, we have
redesigned and upgraded most of our line, making the best even better!
Our 1,000-plus different models now appear in 14 groups that are clearly defined by function:
GROUP 1: Distribution Amplifiers; GROUP 2: Switchers and Routers; GROUP 3: Control
Systems; GROUP 4: Format & Standards Converters; GROUP 5: Range Extenders &
Repeaters; GROUP 6: Specialty AV Products; GROUP 7: Scalers; GROUP 8: Cables and
Connectors; GROUP 9: Room Connectivity; GROUP 10: Mounting and Rack Adapters;
GROUP 11: Sierra Video; GROUP 12: Digital Signage; GROUP 13: Audio; GROUP 14:
Collaboration; and GROUP 15: KM & KVM Switches.
Getting Started
We recommend that you:
•Unpack the equipment carefully and save the original box and packaging materials for
possible future shipment.
•Review the contents of this user manual.
Go
to www.kramerav.com/downloads/SL-280 to check for up-to-date user manuals, application
programs, and to check if firmware upgrades are available (where appropriate).
Achieving the Best Performance
•Use only good quality connection cables (we recommend Kramer high-performance
cables) to avoid interference, deterioration in signal quality due to poor matching, and
elevated noise levels (often associated with low quality cables).
•Do not secure the cables in tight bundles or roll the slack into tight coils.
•Avoid interference from neighbouring electrical appliances that may adversely influence
signal quality.
•Position your Kramer SL-280 away from moisture, excessive sunlight and dust.
This equipment is to be used only inside a building. It may only be connected to other
equipment that
is installed inside a building.

Kramer Electronics Ltd.
SL-280 – Introduction
2
Safety Instructions
Caution:
There are no operator serviceable parts inside the unit
.
Warning:
Use only the power cord
that is supplied with the unit.
Warning:
Do not open the unit. High voltages can cause electrical
shock! Servicing by
qualified personnel only.
Warning:
Disconnect the power and unplug the unit from the wall before installing
.
Recycling Kramer Products
The Waste Electrical and Electronic Equipment (WEEE) Directive 2002/96/EC aims to reduce
the amount of WEEE sent for disposal to landfill or incineration by requiring it to be collected
and recycled. To comply with the WEEE Directive, Kramer Electronics has made
arrangements with the European Advanced Recycling Network (EARN) and will cover any
costs of treatment, recycling and recovery of waste Kramer Electronics branded equipment on
arrival at the EARN facility. For details of Kramer’s recycling arrangements in your particular
country go to our recycling pages at www.kramerav.com/support/recycling.
Overview
SL-280 is a master room (space) controller that can operate over Ethernet with control
interfaces that include: eight bidirectional RS-232, eight IR, eight GPI/O, and eight relays. It
controls devices such as scalers, video displays, audio amplifiers, Blu-ray players, sensors,
screens, shades, door locks, lights, and more. Multiple Kramer Ethernet control gateways can
be used to add remote I/O ports.
Main Features
•Kramer Control Space Controller – Controls any AV device/display with its corresponding
logic.
•High Performance Architecture – Enables a scalable and flexible programming platform.
•8 RS-232 Bidirectional Control Ports – For controlling devices via bi-directional serial
control protocols.
•8 IR Emitter & 1 IR Learning Control Port – Control devices via IR control protocols and
learn commands from IR remotes.
•8 GPI/O Control Ports – Control devices via general purpose I/O ports, program
configured as digital input, digital output or analog input interface for controlling sensors,
door locks, and lighting control devices.
•8 Relay Control Ports – Control devices via low voltage relay contact closure, such as
opening and closing drapes, shades, blinds, and projection screen scrolling.
•Network Support – 10/100/1000Mbps Ethernet.
•LED Indicators – I/O port state, link and system status.
•Software Management Support – Kramer Control, API, K-Upload.

Kramer Electronics Ltd.
SL-280 – Introduction
3
Typical Applications
SL-280 is ideal for the following typical applications:
•Small to large spaces
•Retail stores
•Class rooms and lecture halls
•Auditoriums
•Government meeting rooms
•Court rooms
•Command and control applications
Controlling your SL-280
Control your SL-280 directly via one of the following:
•Ethernet using built-in, user-friendly web pages (see Remote Operation via the Web
Pages on page 9).
•Kramer Control Builder
•Kramer Control Client App

Kramer Electronics Ltd.
SL-280 – Defining the SL-280 Master / Room Controller Kramer Control Brain
4
Defining the SL-280 Master / Room
Controller Kramer Control Brain
This section defines SL-280.
Figure 1: SL-280 Master / Room Controller Kramer Control Brain Front Panel
#
Feature
Function
POWER LED
Lights green when powered on.
SERVICE Micro USB
Connector
Connect to a PC to send P3K commands and perform a firmware upgrade.
IR Receiver and LED
Detects IR signals for IR learning. Lights blue when waiting to receive a
signal.
LINK LED Lights blue to indicate Ethernet activity:
•On – good connection
•Flashing – no connection
•Off – before first connection
CONTROL
LED
Lights to indicate control states of the control application (brain):
•Flashing – sending data
•Green – ready and working
•White – no devices are assigned
•Blue – synchronizing
•Yellow – one or more controlled devices are disconnected
•Red – an error occurred
•Purple – Brain booting up
SERIAL LEDs (1–8)
White Tx LEDs and blue Rx LEDs flash to indicate activity on each
channel.
IR LEDs (1–8)
Light blue to indicate IR activity on each channel (the associated LED
lights when the relevant IR port transmits data).
I/O LEDs (1–8) Light blue to indicate I/O activity on each channel (the associated LED
lights on Digital Out HIGH, and when Digital In is triggered).
RELAY LEDs (1–8)
Light blue to indicate relay activity on each channel (the associated LED
lights when the relay is closed).

Kramer Electronics Ltd.
SL-280 – Defining the SL-280 Master / Room Controller Kramer Control Brain
5
Figure 2: SL-280 Master / Room Controller Kramer Control Brain Rear Panel
#
Feature
Function
SERIAL Ports (1–8)
Terminal Block
Connect to up to 8 serial controlled devices, for Ethernet-to-RS232
bidirectional tunneling.
IR Ports (1–8)
Terminal Block
Connect to up to 8 IR emitters or blasters.
I/O Ports (1–8) Terminal
Block
Connect to up to 8 sensors or devices to be controlled, for example, a
motion sensor. Port may be configured as a digital input, digital output, or
analog input (see Configuring I/O Ports on page 15).
RELAY Ports (1–8)
Terminal Block
Connect to up to 8 devices to be controlled by relay for example, a
motorized projection screen. Six of the ports are NO and ports 1 and 5 can
be connected as NO or NC (see Connecting the Relay Ports on page 8).
USB Connector
For future use.
ID Button For self-identification over the network.
Press the button to send (broadcast) the Beacon P3K command.
Reply includes: IP address, UDP port number, TCP port number, MAC
address, and Model Name.
RESET Button
Press while performing a factory default reset (see Resetting to Factory
Default Settings on page 25.
LAN RJ-45 Connector
Connect to a local area network. Indications:
LINK LED lights amber – 1000/100/10MB connection.
DATA LED flashes green – Ethernet data link activity.
Power Socket with Fuse
and Power Switch
Connect to the power cord and to the mains electricity.
Switch for turning the unit ON or OFF.

Kramer Electronics Ltd.
SL-280 – Installing in a Rack
6
Installing in a Rack
This section provides instructions for rack mounting SL-280. Before installing in a rack, verify
that the environment is within the recommended range:
•Operation temperature – 0°to 40°C (32 to 104°F).
•Storage temperature – -40°to +70°C (-40 to +158°F).
•Humidity – 10% to 90%, RHL non-condensing.
When installing on a 19" rack, avoid hazards by taking care that:
•It is located within recommended environmental conditions. Operating ambient
temperature of a closed or multi-unit rack assembly may exceed ambient room
temperature.
•Once rack mounted, there is enough air still flow around SL-280.
•SL-280 is placed upright in the correct horizontal position.
•You do not overload the circuit(s). When connecting SL-280 to the supply circuit,
overloading the circuits may have a detrimental effect on overcurrent protection and
supply wiring. Refer to the appropriate nameplate ratings for information. For example,
for fuse replacement, see the value printed on the product label.
•SL-280 is earthed (grounded) and connected only to an electricity socket with
grounding. Pay particular attention when electricity is supplied indirectly (for example,
when the power cord is not plugged directly into the wall socket but to an extension
cable or power strip). Use only the supplied power cord.
To rack-mount SL-280:
1. Attach both rack ears to SL-280:
Remove the screws from each side of SL-280 (3 on
each side), and replace them through the rack ears.
2. Place the rack ears of SL-280 against the rack rails
and insert the appropriate screws (not provided)
through each of the four holes in the rack ears.
Some models, may feature built
-in rack ears:
•Detachable rack ears can be removed for desktop use.
•Always mount SL-280 in the rack before connecting any cables or power.

Kramer Electronics Ltd.
SL-280 – Connecting SL-280
7
Connecting SL-280
Always switch off the power to each device before connecting it to your
SL-280. After
connecting your
SL-280, connect its power and then switch on the power to each device.
Figure 3: Connecting SL-280
To connect SL-280 as illustrated in the example in Figure 3, do the following:
1. Connect up to eight bidirectional RS-232 devices to the Serial terminal block ports .
2. Connect up to eight IR emitters or blasters to the IR terminal block ports .
3. Connect up to eight GPIO (General Purpose I/O) devices to the I/O terminal block ports
. No more than 30V can be connected.
4. Connect to a LAN through the LAN RJ-45 connector .
5. Connect the power cord to the power socket and to the mains electricity.

Kramer Electronics Ltd.
SL-280 – Connecting SL-280
8
Connecting the Relay Ports
The normal state of the relay ports is as follows:
•Ports 2–4, 6–8 – NO (Normally Open)
•Ports 1 and 5 – can be connected as NO or NC (Normally Closed)
Figure 4: Relay Ports
To connect a ports as NO:
•Connect the device to the C (Common) and NO terminals of the relevant port.
To connect ports 1 and 5 as NC:
•Connect the device to the C and NC terminals of the relevant port.

Kramer Electronics Ltd.
SL-280 – Remote Operation via the Web Pages
9
Remote Operation via the Web
Pages
SL-280 embedded webpages enable you to define device settings, configure communication
parameters, configure port settings, define security parameters, and view activity logs.
The specific parameter values shown in screenshots
of this manual are merely
representative.
To access the web pages:
1. Enter the IP address of the device (see Default Communication Parameters on page 27)
in the address bar of your browser.
The Loading page appears followed shortly by the General Info page.
Figure 5: Embedded Web Pages – General Info Page
The General Info page displays the following:
•Model name
•Firmware version
•Serial number
•Web pages version
2. Click the tabs on the left side of the screen to access the relevant web page.

Kramer Electronics Ltd.
SL-280 – Remote Operation via the Web Pages
10
Loading and Saving Configurations
You can save a configuration for easy recall in the future.
At the bottom left hand side of all web pages there is a Load and a Save button. These enable
you to save the current configuration and load any pre-saved configurations.
To load a configuration:
1. Click Load.
An Explorer window opens.
2. Select the required file and click Open.
The device is configured according to the saved preset.
To save the current configuration:
1. Configure the device as required.
2. Click Save.
The Save File window opens.
3. Browse to the required location to which to save the file.
4. Enter the required name for the saved preset.
5. Click OK.
The current configuration is saved.
When using Chrome, the file is automatically saved in the Downloads folder.

Kramer Electronics Ltd.
SL-280 – Remote Operation via the Web Pages
11
Viewing Connected Clients Information
SL-280 web pages enable you to view information for client devices that are connected to
SL-280 via Ethernet.
To view connected clients information:
1. Click Connected Clients on the left side of the web page (Figure 5).
The Connected Clients page appears.
Figure 6: Connected Clients Page
2. View the following connected clients information:
•IP – IP address
•To – The RS-232 port to which it is connected
•Through – Method of connection
•S/R – Whether or not Send Replies is enabled for the port (see Configuring the Serial
Ports on page 14).
Modifying Device Settings
SL-280 web pages enable you to modify the following device settings:
•Device Name
•Time and Date Settings

Kramer Electronics Ltd.
SL-280 – Remote Operation via the Web Pages
12
Changing the Device Name
SL-280 device name is used by DNS when addressing the device and is necessary for
accessing the device for the first time using a Web browser.
To change the name of your device:
1. Click Device Settings on the left side of the web page (Figure 5).
The Device Settings page appears.
Figure 7: Device Settings Page
2. In the General info area, enter a new name in the Device name field.
The device name cannot include any spaces, can be up to 14 characters and can
include letters, numbers, hyphens and underscores only.
3. Click Save Changes.
Setting the Date and Time
SL-280 web pages enable you to manually set the date and time for your SL-280 device or to
use a time server to automatically set the date and time. Date and time settings are used by
the device for logging purposes (see Using the Log on page 23), and for time driven events as
defined through Kramer Control Builder.
To set the date and time for your device:
1. Click Device Settings on the left side of the web page (Figure 5).
The Device Settings page appears (Figure 7).
2. In the Time and Date area, if Use time server (NTP) is set to ON, click OFF and click in
the relevant fields to define the date, time and time zone.
–OR–
3. Click the ON button, enter the time server address in the Time server address field, and
click Set.

Kramer Electronics Ltd.
SL-280 – Remote Operation via the Web Pages
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4. Click Save Changes.
Defining IP Settings
The default IP address setting for the device is DHCP
ON.
To define static IP settings:
1. Click Communication on the left side of the web page (Figure 5).
The Communication page appears.
Figure 8: Communication Page
2. In the Ethernet section, view the MAC address.
3. Click the DHCP OFF button.
4. Enter the required IP settings in the relevant fields.
5. Click Set.

Kramer Electronics Ltd.
SL-280 – Remote Operation via the Web Pages
14
Configuring the Serial Ports
SL-280 web pages enable you to configure each of the serial ports .
To configure a serial port:
1. Click Serial Ports Setting on the left side of the web page (Figure 5).
The Serial Ports Setting page appears.
Figure 9: Serial Ports Setting Page
2. In the Port area, click a port number (1–8).
3. In the Settings area, click UDP or TCP.
4. Enter the IP Port number.
5. Enter a TCP Keepalive value between 0 and 3600 seconds.
This value defines how often the unit sends a “keep alive” signal to the client. The default
value is 60 seconds.
6. Define the serial settings as necessary (see Default Communication Parameters on
page 27).
7. Select whether or not to send replies on the port to a new connected client by default,
(see Viewing Connected Clients Information on page 11).
8. Click Save Changes.

Kramer Electronics Ltd.
SL-280 – Remote Operation via the Web Pages
15
Configuring I/O Ports
SL-280 web pages enable you to configure each of the I/O ports . The I/O ports control
devices such as sensors, door locks, audio volume and lighting control devices.
To configure an I/O port:
1. Click GPIO Ports Settings on the left side of the web page (Figure 5).
The GPIO Ports Settings page appears.
Figure 10: GPIO Ports Settings Page – Digital IN Trigger Type
2. In the Port area, click the number (1–8) of the port to be configured.
3. In the Settings area, select one of the following from the Trigger type option box:
•Digital Input (see Configuring a Digital Input Trigger Type on page 16)
•Digital Output (see Configuring a Digital Out Trigger Type on page 17)
•Analog Input (see Configuring an Analog In Trigger Type on page 18)
The settings
available on the page, change depend on which trigger type is selected.

Kramer Electronics Ltd.
SL-280 – Remote Operation via the Web Pages
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Configuring a Digital Input Trigger Type
Digital Input trigger mode reads the digital input of an external sensor device that is connected
to the GPIO port, and detects High (upon passing Max threshold from Low state) or Low (upon
passing Min threshold from High state) port states according to the user defined voltage
threshold levels.
To configure a digital input trigger type:
1. On the GPIO Ports Settings page, select Digital IN from the Trigger type option box
(Figure 10).
The Digital IN options appear (Figure 10).
2. Select one of the following for the Pull-up resistor setting:
•Enabled
Detection of an open circuit as High, or a short to ground as Low. This is suitable for
example, for a pushbutton switch (connecting one terminal of the switch to ground, and
the other to the input) or for an alarm closing a circuit that activates a series of actions.
When the pull-up resistor is enabled, the port state is high and to be triggered it must be
pulled low by the externally connected sensor.
•Disabled
Suitable, for example, for a high temperature alarm that exceeds the maximum voltage
threshold.
When the pull-up resistor is disabled, the port state is low and to be triggered it must be
pulled high by the externally connected sensor.
3. Define the Min and Max for the Threshold VDC range (threshold voltage at which the
port changes state) and click Set.

Kramer Electronics Ltd.
SL-280 – Remote Operation via the Web Pages
17
Configuring a Digital Out Trigger Type
To configure a digital output trigger type:
1. On the GPIO Ports Settings page, select Digital OUT from the Trigger type option box
(Figure 10).
A Warning message appears.
Figure 11: Digital Out Selection Warning
2. Click OK.
The Digital OUT options appear.
Figure 12: GPIO Ports Settings Page – Digital OUT Trigger Type
3. Select one of the following for the Pull-up resistor setting:
•Pullup resistor enabled:
The port can be used for controlling devices that accept a TTL signal such as for
powering LEDs. The voltage output is TTL positive logic: open: ~ 3.5V; closed: ~
0.3V.
When the pull-up resistor is enabled, the port state is high. For the state to be low,
you must click Low for the Current Status.
•Pullup resistor disabled:
The port is used for controlling external devices such as room or light switches. The
external source device determines the voltage output; the maximum voltage is 30V
DC and the maximum current is 100mA.
When the pull-up resistor is disabled, the port state is low and to set it high, you must
click High for the Current Status.
Make sure
that the current in this configuration does not exceed 100mA.

Kramer Electronics Ltd.
SL-280 – Remote Operation via the Web Pages
18
Configuring an Analog In Trigger Type
When you select the Analog IN trigger type, the port is triggered by an external analog device,
such as a volume control device. The trigger is activated once when the detected voltage is
within the 0 to 30V DC voltage range.
When the Analog
IN trigger type is selected, the Pullup resistor and Threshold settings
are disabled.
To configure an analog input trigger type:
1. On the GPIO Ports Settings page, select Analog IN from the Trigger type option box
(Figure 10).
The Analog IN options appear.
Figure 13: GPIO Port Settings Page Analog IN
2. Enter or use the arrows to scroll to a value (1–100) for the Maximum reported steps.
This value is the number of steps that the analog input signal is divided into. To
calculate the voltage of each step, use the following formula:
Voltage of one step = 30V / number of steps