Operating instruction

Managed Ethernet switch 500NMD20

EDS500 series - Ethernet & DSL switches

Application, characteristics and technical data have to The Ethernet interface can operate at transmission
be taken from the hardware data sheet: rates of 10 or 100 Mbps, depending on the connected
devices in half duplex or full duplex mode. The
500NMD20 Data sheet 1KGT 150 894 operation mode is detected and set automatically
by the EDS500 devices. A manual configuration is
Operation possible.
The compact modem 500NMD20 has two optical
Pin allocation Ethernet interface (RJ-45)
interface as SFP plug-in and four Ethernet interfaces.
There are two serial interfaces for configuration or Pin assigned as data assigned as
process interface (e.g. to connect telecontrol units). A transmission network termi-
configurable alarm relais and an extension interface device (MDI) nation device
(e.g. to use the configuration stick) complete the (MDI-X)
device. 1 Tx+ Rx+
2 Tx- Rx-
RS-232/ 3 Rx+ Tx+
RS-232 8 1

RS-485 4 n.c. n.c.

5 n.c. n.c.

Console0 Console1 6 Rx- Tx-

7 n.c. n.c.
8 n.c. n.c.
Tunnel CFG Tunnel CFG

Configuration SFP Interfaces (Fo1 - Fo2)

and Monitoring
All SFP interfaces are designed according to Small
Form-Factor Pluggable (INF-8074i).

WARNING
Intelligent Switch
(Layer 2 or 3) Only transceivers up to laser class 1 according to
EN 60825-1 are allowed to be used for the SFP
interfaces.

1 2 3 4 5 6 ADVICE

Any warranty claims can only extend to SFPs

delivered by ABB.

WAN WAN local LAN

Serial Interfaces (Con0 - Con1)
Figure 1: 500NMD20 Blockschaltbild
The serial interfaces of the devices are signal
compatible to RS-232. The connector is a RJ-12 female
Connections
plug. The factory pre-sets are speed 57600 Baud,
Ethernet interfaces (Port1 - Port4) no parity, 1 stop bit, no flow control. On delivery, the
Every Ethernet interface detects automatically management console can be accessed via the serial
whether the connected counterpart works as interface.
transmission or network termination device. This way
both normal and crossover cables can be used (MDI/
MDI-X).
Pin allocation serial interface RS-232 (RJ-12) Extension interface (EXT)

RS-232 RS-232 PC SUB-D9 The plug of the proprietary expansion bus is designed
Pin SignalDirection Pin SignalDirection as USB type B but uses a manufacturer specific
protocol.
1 DCD Output 1 DCD Input
2 CTS Output 8 CTS Input The configuration parameters are stored directly
3 RTS Input 7 RTS Output on the device. In addition, a configuration stick can
6 1 be connected to the expansion bus to save data
4 GND - 5 GND -
externally, in example to exchange defective devices
5 RxD Output 2 RxD Input easily.
6 TxD Input 3 TxD Output
ADVICE
Pin allocation serial interface RS-485 half duplex Danger of damaging the device
(RJ-12)
RS-485 half duplex / 2-wire Do not connect any USB devices!
Pin Signal Direction
1 Alarm-Relay (X2)
2
The devices are equiped with a potential free alarm
3 B (-) bi-directional
6 1
output (relay with isolated switchover contact). This
4 GND - output corresponds to a device alarm and is activated
5 when the device looses the power supply or the alarm
6 A (+) bi-directional LED is constantly on. The reason for the signalling of
an alarm can be referenced in the system alarm table.

Pin allocation serial interface RS-485 full duplex Pin allocation alarm output (X2)
(RJ-12)
1 2 3 4 Pin Signal
RS-485 full duplex / 4-wire
1 & 2 Normal state
Pin Signal Direction
1 & 3 Alarm state
1
4 Common contact (connected to 1)
2 B (-) Input
3 B (-) Output
6 1 WARNING
4 GND -
5 A (+) Input The relay is designed for switching only safe low
voltages.
6 A (+) Output

Power connector (X1) Signaling

The EDS500 devices are equipped with a wide range LED Description Function
power supply for voltages between 24 and 60 Volts DC Power Voltage off Device is without
(power consumption see device label). The connector Supply power supply
is a 4-pin Phoenix plug with screw terminals.
green Power supply
switched on
Pin allocation power supply (X1)
Ready Ready off Hardware fault or
Pin Signal booting
1 2 3 4
1 24-60 V DC green Device ready
2 Functional earth (internally wired to Fo Module SFP Module off SFP not plugged
pin 4)
green SFP plugged
3 GND
Fo Link SFP link off no optical link
4 Functional earth (internally wired to active
pin 2)
green Optical link estab-
lished
ADVICE Fo Activity SFP activity off No activity on the
optical interface
Due to the internal overvoltage protection,
interrupt any connection to ground of the device green Data is trans-
for the time of the measurement before you carry mitted via the
optical interface
out isolation measurement. This includes the
earthing of the hat rail as well as all shields of all Con DCD Con DCD off DCD inactive on
transmission lines and supply feedings. RJ-12 plugs Con interface
or RJ-45 plugs can establish earthing via the shield. green DCD active
LED Description Function • SSH
Suitable SSH clients on the PC side are programs
Con Activity Con activity off No activity on the like Tera Term or PuTTY. The tar-get address is the
Con interface device’s IP address. During the connection you will
green Data is trans- be prompted for authentication credentials. The
mitted via Con default login name is edslogin, the password is
empty when in delivery status. SSH access can be
Alarm Alarm off No alarm
disabled by configuration.
flash Warning or • Webserver
configuration With the webserver activated (default setting)
error browsers like Firefox, Opera, Safari, Chrome or
red alarm the Internet Explorer can be used to configure
Fo Alarm SFP Alarm off No alarm the devices using the web interface. To do so
enter the device IP into the browser address
red Alarm about the field. The device will subsequently request
SFP interface(s) authentication credentials. The default login name
L Ethernet off No connection is edslogin, the password is empty when in delivery
connection green Link established status. Webserver access can be disabled by a
configuration command.
flash Activity (send or
receive)
S Ethernet off Data rate 10 Mbps The command line interface
data rate orange Data rate 100 The command line of the 500NMD20 is similar to the
Mbps (DOS) command line known from the PC. All device
properties can be set and shown here.
During start-up all displays light up shortly for about • Commands are typed into the console, pressing
< { E n t e r } > will start execution.
1 second. As soon as the start-up has been finalized
successfully (about 30 seconds after switching on the • Commands can be abbreviated as soon as they
are unambiguous, i.e. < s h s y > is equivalent
device) the LED "Ready" switches to green.
to < s h o w s y s t e m > , < s e s w p 1 n s >
is equivalent to < s e t s w i t c h p o r t 1 n o
Device configuration shutdown>.
The 500NMD20 can be configured locally as well as • A command overview can be listed on every level by
typing < ? > . Example: < s h s y ? > translates to
from remote. In the following some methods are
< s h o w s y s t e m ? > and results in s n m p s n t p
introduced, for a complete description please see
s s h s y s l o g t e m p e r a t u r e being shown
EDS500 Manual - Part 2: Functions (1KGT151021). as command keywords to follow, i.e. one possible
command is < s h o w s y s t e m t e m p e r a t u r e > .
Configuration using a serial configuration cable • There are two authentication levels on the
command line: Login authentication and Enable
In delivery status all serial interfaces are in authentication. Login authentication can be
configuration mode to provide access to the command described as a read only mode and is accessible
line. Using a serial configuration cable (500CAB06 directly after establishing a serial connection
1KGT038912R0001), the device can be connected to a with the PC. Enable authen-tication is required
serial port of a PC/notebook. once you need to change system settings or
show the complete system parameter set.
The default configuration for the serial connection is: Enable authentication is reached by entering
57600 Baud 8N1 (8 data bits, no parity, 1 stop bit), no the < e n a b l e > command. Both authentication
hardware flow control. levels can be protected by a password, the
respective commands are < s e t l o g i n p a s s
{ s t r i n g 2 0 } > and < s e t e n a b l e p a s s
IP based configuration, remote configuration {string20}>.
After establishing a network connection to the • Configuration commands entered on the
device and configuring IP addresses as required (i.e. command line interface are stored in the running
“the device can be pinged”), the following remote configuration of the device, which represents the
configuration features can be used: current state of the system. To preserve this status
after a reboot, the running configuration must
• Telnet
Telnet clients like HyperTerminal, PuTTY or be transferred to the startup configuration using
telnet.exe (on the PC command line interface) the command < w r i t e > . During system startup
can be used to establish a telnet session with the all commands from the startup configuration
device. The IP address of the unit has to be used are being executed and thus create the running
as Telnet target. Telnet access can be disabled by a configuration. When a configuration stick is
configuration command. attached to the device, executing the < w r i t e >
command results in the running configuration
being copied not only to the startup configuration
but also to the stick configuration (unless the stick
is set to “read only”). During system startup with
attached config stick, the stick configuration over-
writes the startup configuration.
• The current configuration (running configuration) IP Address 10.0.0.2
can be displayed using the command < s h o w IP Subnet Mask 255.0.0.0
r u n n i n g - c o n f i g > (only with Enable IP Gateway 10.0.0.1
authentication). The start configuration may be
These parameters can be changed by commands listed
shown using < s h o w s t a r t u p - c o n f i g > .
below:
When a config stick is attached, its content can be
shown using < s h o w s t i c k - c o n f i g > . <set system ip {IP address}>
<set system subnetmask {subnet
mask}>
Interface configuration <set system gateway {IP address}>
Ethernet Interfaces
The Fast Ethernet interfaces (IEEE802.3 compliant, System Identification Settings
10Base-T/100BaseTX) support auto MDIX, therefore
For an easier identification of the devices several
terminal devices and network equipment can be description parameters can be set:
connected both with regular and crossover cables. • Hostname:  < s e t s y s t e m h o s t n a m e
Cable connection uses conventional 8P8C connectors {name}>
(RJ45). Auto negotiation as well as static speed and • Contact: < s e t s y s t e m c o n t a c t
duplex settings are supported. In delivery state all {contact}>
interfaces are activated and auto negotiation is • Location: < s e t s y s t e m l o c a t i o n
con-figured. If you need to configure, for instance, {location}>
a 10 Mbps half duplex connection for port 2, the • Description: < s e t s y s t e m d e s c r i p t i o n
following commands must be issued: < s e t s w i t c h {text}>
port2 duplex half>, <set switch port2
s p e e d 1 0 > and < s e t s w i t c h p o r t 2 n o
Device monitoring
shutdown>.
For central processing of device syslog messages a
syslog server can be configured with the following
Optical Interfaces command:
The optical interfaces are realized as SFP module slots <set system syslog server {IP
(Small Formfactor Plugga-ble, INF-8074i) und can be address} {{0-7} | abb-security-
equipped with different transceivers. The speed is events}>
fixed to 100 Mbps, the duplex setting can be changed In order to provide “real” timestamps in the event log
(full duplex, half duplex). Delivery configuration is 100 and the syslog messages a SNTP time server can be
Mbps, full duplex. configured:
<set system sntp server {IP
ADVICE address}>
<set system sntp timezone {cet |
When using a managed SFP unit, parameters of the cet-cest | eet | gmt}>
optical interface like signal quality or temperature
Specifying a SNMP trap server:
can be displayed and monitored.
<set system snmp trap-target
{IP address} [{v1|v2c}]
[{community}]>
VLAN configuration
The Ethernet, DSL and optical interfaces of the
Firmware Update
EDS500 devices support virtual LANs complying
with the IEEE 802.1Q standard. Thus it is possible to The firmware is updated by transferring a firmware
define logical sub-nets for different applications (for image to the device. It can be downloaded with
instance, one subnet for RTU communication, an- the help of the command line (Telnet, SSH, serial
other subnet for voice-over-IP). The interfaces can be terminal) as well as with the help of the integrated
configured as trunk or access ports. In default state web interface, scripts or a management program. It is
the DSL interfaces are configured as trunk. mandatory that there is an IP connection to the device.

Example: ADVICE
• <set switch port1 access-vlan 10>
configures port 1 as access port for VLAN 10. During a firmware update the power supply
• <set switch port2 trunk-vlan 10>, must not be interrupted or a reboot must not
<set switch port2 trunk-vlan 20> be triggered as this could leave the device in an
configures port 2 as trunk port for VLANs 10 and 20 inoperable state.
(secure trunk).
• <set switch port3 trunk-vlan all>
configures port 3 as trunk for all VLANs. Reset Button
Pressing the reset button restarts the device and
System settings loads the saved configuration (startup-config or stick-
Device IP Address config). As a protection against accidental triggering,
the reset button is in a concealed place and be reached
In delivery state the devices have following IP
configuration: with a pointed tool (e.g. paper clip).
 ADVICE WARNING

If the running configuration (= running-config) The DC power supply has to fulfil the following
does not match the saved configuration (= startup- requirements in order to supply appropriate fire
config) it is lost with the restart. protection:
• Limited power source according to IEC 60950-1
or PS2 classified according to IEC 62368-1
ADVICE • Short-circuit current < 8A

All established communication connections will be

lost during restart. WARNING

The device shall be powered off while accessing

any of the connectors X1 (power connector) or X2
Safety
(alarm relay). Any other connectors (e.g. Ethernet,
DANGER RS-232, RS-485 or DSL) are hot-pluggable while the
device is operating.
Interrupt the power supply before mounting or
dismounting the device.

WARNING
WARNING No plug shall be freely accessible in normal
operation due to safety reasons.
An easy to access manual interrupter has to be
installed into the power feed of the modem to be
able to disconnect the modem from the power
supply in the case of an emergency.
Figure 2: 500NMD20 Front plate

Figure 3: 500NMD20 Label

 1KGT 150 895 V001 1

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for potential errors or possible lack of All rights reserved
www.abb.com/remote-terminal-units information in this document.