Westermo IDW-90 User manual

www.westermo.com
IDW-90
ISDN Terminaladapter

26620-2200

3
6620-2200
General information
Legal information
The contents of this document are provided “as is”. Except as required by applicable law,
no warranties of any kind, either express or implied, including, but not limited to, the
implied warranties of merchantability and fitness for a particular purpose, are made in
relation to the accuracy and reliability or contents of this document. Westermo reserves
the right to revise this document or withdraw it at any time without prior notice.
Under no circumstances shall Westermo be responsible for any loss of data or income or
any special, incidental, and consequential or indirect damages howsoever caused.
More information about Westermo can be found at the following Internet address:
www.westermo.com

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Safety
Before installation:
Read this manual completely and gather all information on the unit. Make sure that
you understand it fully. Check that your application does not exceed the safe oper-
ating specifications for this unit.
This unit should only be installed by qualified personnel.
This unit should be built-in to an apparatus cabinet, or similar, where access is
restricted to service personnel only.
The power supply wiring must be sufficiently fused, and if necessary it must be
possible to disconnect manually from the power supply. Ensure compliance to
national installation regulations.
This unit uses convection cooling. To avoid obstructing the airflow around the unit,
follow the spacing recommendations (see Cooling section).
Before mounting, using or removing this unit:
Prevent access to hazardous voltage by disconnecting the unit from power supply.
Warning! Do not open connected unit. Hazardous voltage may occur within this
unit when connected to power supply.
Care recommendations
Follow the care recommendations below to maintain full operation of unit and to fulfil
the warranty obligations.
This unit must not be operating with removed covers or lids.
Do not attempt to disassemble the unit. There are no user serviceable parts inside.
Do not drop, knock or shake the unit, rough handling above the specification may cause
damage to internal circuit boards.
Do not use harsh chemicals, cleaning solvents or strong detergents to clean the unit.
Do not paint the unit. Paint can clog the unit and prevent proper operation.
Do not expose the unit to any kind of liquids (rain, beverages, etc). The unit is not water-
proof. Keep the unit within the specified humidity levels.
Do not use or store the unit in dusty, dirty areas, connectors as well as other mechanical
part may be damaged.
If the unit is not working properly, contact the place of purchase, nearest Westermo dis-
tributor office or Westermo Tech support.
Fibre connectors are supplied with plugs to avoid contamination inside the optical port.
As long as no optical fibre is mounted on the connector, e.g. for storage, service or
transportation, should the plug be applied.
Maintenance
No maintenance is required, as long as the unit is used as intended within the specified
conditions.
!
!

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Product disposal.
This symbol means that the product shall not be treated as
unsorted municipal waste when disposing of it. It needs to
be handed over to an applicable collection point for recy-
cling electrical and electronic equipment.
By ensuring this product is disposed of correctly, you will
help to reduce hazardous substances and prevent potential
negative consequences to both environment and human
health, which could be caused by inappropriate disposal.

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Agency approvals and standards compliance
Type Approval / Compliance
EMC EN 61000-6-1, Immunity residential environments
EN 61000-6-2, Immunity industrial environments
EN 61000-6-3, Emission residential environments
EN 61000-6-4, Emission industrial environments
EN 50121-4, Railway signalling and telecommunications apparatus
IEC 62236-4, Railway signalling and telecommunications apparatus
Safety EN 60950-1, IT equipment
ISDN TBR-3
FCC Part 15.105 Notice: This equipment has been tested and found to comply with the limits for a
Class B digital device, pursuant to Part 15 of the FCC Rules. These limits
are designed to provide reasonable protection against harmful interference
in a residential installation. This equipment generates, uses and can radiate
radio frequency energy and, if not installed and used in accordance with
the instructions, may cause harmful interference to radio communications.
However, there is no guarantee that interference will not occur in a partic-
ular installation. If this equipment does cause harmful interference to radio
or television reception, which can be determined by turning the equipment
off and on, the user is encouraged to try to correct the interference by
one or more of the following measures:
… Reorient or relocate the receiving antenna
… Increase the separation between the equipment and receiver
… Connect the equipment into an outlet on a circuit different from that to
which the receiver is connected
… Consult the dealer or an experienced radio/TV technician for help.
Simplified EU declaration of conformity
Hereby, Westermo declares that the equipment is in compliance with applicable EU
directives. The full EU declaration of conformity and other detailed information are
available at the respective product page at www.westermo.com.

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Type tests and environmental conditions
Electromagnetic Compatibility
Phenomena Test Description Test levels
ESD EN 61000-4-2 Enclosure contact ± 6 kV
Enclosure air ± 8 kV
RF field AM modu-
lated
IEC 61000-4-3 Enclosure 10 V/m 80% AM (1 kHz), 80 – 1 000 MHz
20 V/m 80% AM (1 kHz), 80 – 2 000 MHz
RF field 900 MHz ENV 50204 Enclosure 20 V/m pulse modulated 200 Hz, 900 ± 5 MHz
Fast transient EN 61000-4-4 Signal ports ± 2 kV
Power ports ± 2 kV
Surge EN 61000-4-5 Signal ports unbal-
anced
± 2 kV line to earth, ± 2 kV line to line
Signal ports
balanced
± 2 kV line to earth, ± 1 kV line to line
Power ports ± 2 kV line to earth, ± 2 kV line to line
RF conducted EN 61000-4-6 Signal ports 10 V 80% AM (1 kHz), 0.15 – 80 MHz
Power ports 10 V 80% AM (1 kHz), 0.15 – 80 MHz
Power frequency
magnetic field
EN 61000-4-8 Enclosure 100 A/m, 50 Hz, 16.7 Hz & 0 Hz
Pulse magnetic field EN 61000-4-9 Enclosure 300 A/m, 6.4 / 16 ms pulse
Mains freq. 50 Hz EN 61000-4-16 Signal ports 100 V 50 Hz line to earth
Mains freq. 50 Hz SS 436 15 03 Signal ports 250 V 50 Hz line to line
Voltage dips and
interruption
EN 61000-4-29 DC power ports 10 & 100 ms, interruption
10 ms, 30% reduction
10 ms, 60% reduction+20% above & –20%
below rated voltage
Radiated emission EN 55022 Enclosure Class B
FCC part 15 Class B
Conducted emission EN 55022 DC power ports Class B
Dielectric strength EN 60950 Signal port to other
isolated ports
2 kVrms 50 Hz 1 min
Power port to
other isolated ports
3 kVrms 50 Hz 1 min
2 kVrms 50 Hz 1 min (@ rated power <60 V)
Environmental
Temperature Operating +5 to +55ºC /
Storage & Transport –25 to +70ºC
Humidity Operating 5 to 95% relative humidity
Storage & Transport 5 to 95% relative humidity
Altitude Operating 2 000 m / 70 kPa
Reliability prediction
(MTBF)
MIL-HDBK- 217F Operating
Service life Operating 10 year
Vibration IEC 60068-2-6 Operating 7.5 mm, 5 – 8 Hz 2 g, 8 – 500 Hz
Shock IEC 60068-2-27 Operating 15 g, 11 ms
Packaging
Phenomena Test Description Level
Enclosure UL 94 PC / ABS Flammability class V-1
Dimension
W x H x D
35 x 121 x 119 mm
Weight 0.25 kg
Degree
of protection
IEC 529 Enclosure IP 21
Cooling Convection
Mounting Horizontal on 35 mm DIN-rail

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Description
The Westermo IDW-90 is an industrialised ISDN Terminal adapter. This Terminal adapter
has been developed with high speed industrial data communications in mind and has
some features you would not expect to find on normal adapters.
The unit is DIN rail mounted and has both an RS-232/V.24 and RS-485 interface sup-
porting both 2 and 4 wire connections.
Terminal data rates of up to 230 kbit/sec can be handled with a 128 kbit/s ISDN B-chan-
nel bit rate.
The IDW-90 has been designed to meet the European ISDN standard DSS1. All stand-
ard ISDN transport protocols are supported including HDLC transparent, V.110 asyn-
chronous, X75, PPP and ML-PPP.
In the IDW-90 has a also an analogue V.34 modem been included allowing communica-
tion with analogue modems over the ISDN. The IDW-90 can be configured to automati-
cally select if analogue modem shall be used to reach the called location.
The combination of analogue and ISDN modem and V.110 protocol support makes the
IDW 90 especially suited for mixed environments there an ISDN connected modem shall
be reached from ISDN, analogue and GSM networks .
A watchdog facility continually monitors the power supply and internal hardware as well as
the operational software. In the event of a problem the modem automatically resets. This
feature has been included to make the unit more suitable for use in unmanned locations.
The modem also has password protection, dial-back security and caller ID answering to
ensure that only authorised users can communicate with the modem and any connected
equipment.
The IDW-90 also has a single digital input and output relay. The input and output can
be used to trigger, or be triggered by a number of different user defined events. Both the
digital input and output are galvanically isolated from the rest of the modem.
For ease of setup the modem is supported by the Westermo IDW-tool configuration
software but also has DIP switches to assist configuration. Drivers for Windows setup
are also supplied.
… Connection to analogue telephone modems
… DTE data rate up to 230 kbit/s
… ISDN data rate up to 128 kbit/s (ISDN)
… Analogue data rate up to 33.6 kbit/s (V.34)
… ISDN leased line support
… Generic I/O inputs
… Generic Relay output
… DTR/TX and I/O event trigged dialling
… Secure connection and dial-back
… Remote configuration
… Configuration by DIP-switches
… Event trigged SMS-message transmission.
… Industrial and railway level of protection
… Polarity independent AC-/DC-supply
… Galvanic isolation (Power supply – ISDN – I/O – Serial interfaces)
… Built in watchdog

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2-pin
screw
terminal
LED’sLED driver
RS-232
Drivers
and
protection
Drivers
and
protection
RS-485
9-pin
screw
terminal
I/O
Output
ARM7
Processor
V34 Single
Chip Modem
ISDN
Controller
Isolated Power supply
ISDN S
0
Network
Interface
RJ-45
DIP
switches
9-pos
D-Sub
I/O Input
Functional description
Remote configuration
The IDW-90 can be configured from a remote modem. To configure a IDW-90 any GSM ,
ISDN or PSTN modem can be used.
The modem used to configure is referred as “local modem”. Enable remote config by
setting DIP switch 4:7.
Please make sure that the remote IDW-90 is connected to the ISDN network and is
powered up.
… Connect the local modem to it’s media (ISDN, PSTN or GSM)
… Connect the PC’s com-port to the DTE interface of the local modem.
… Connect the power supply.
… Start a terminal emulation program (i.e. Windows Hyper-Terminal)
… Configure the local modem protocol
1. If local modem is a GDW-11/12 a normal GSM data connection should be used.
2. If local connection is ISDN, configure with the B channel protocol V110 9600 bit/s
3. If local connection uses some analogue modem, the modem has to be configured for
V32 modulation line speed 9600 bit/s.
… Set up a connection to the remote IDW-90 to be configured by using the normal
dial command: ATD<No><CR>. When connected send the remote escape sequence
<++++>. The called remote IDW-90 shall acknowledges by requesting the remote
password. Please enter the correct password (default: no password, just return). Now
you can configure the remote IDW-90 using AT-commands. Password for remote con-
figuration is defined with AT*WRAP – Remote access password.
… Configure the parameter on the remote IDW-90 from your terminal program and
save the settings with AT&W.
Hang up the connection using the ATH command.

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Generic I/O
The generic I/O gives the following functionality:
1. Establishing a data connection to a predefined target number
When the input is switched (pulsed), the modem establish a data connection to
the stored predefined number. After a time, specified in the modem, without data
exchange, the connection is released (inactivity timer).
2. Sending a SMS Message to a predefined targetnumber
When the input is switched (pulsed), the modem shall establish a connection to a SMS
service centre defined by a predefined number. The SMS Messages can handle at least
160 characters. TAP and UCP protocols are supported.
3. Sending a Text Message to a predefined targetnumber
When the input is triggered, the modem will establish a connection to the stored tel-
ephone number and transfer a predefined text message.
4. Switch the remote digital output
When the input is triggered, the modem will establish a connection to the stored
number of an remote unit and send out a command, that switches (pulses) the remote
output according to a predefined sequence.
5. Execute AT-Command string
Execute a pre-programmable AT command string stored in the table of entries.
This can for example be used for switching DTE communication parameters for
online an offline mode by using two entries.
6. Transparent I/O
When the input is triggered, the modem will establish a connection to the stored
number of an remote unit and send out a command, after a connection is established,
the I/O is bi-directional.
To accept any remote generic I/O on a modem the “Remote I/O Enable” DIP switch
must be set “ON”
Digital Output
The digital output gives the following functionality:
1. Output Contact
The modem has an change over relay output (SPDT-contact). The output can be
controlled by a remote modem through Transparent I/O and Output service in the
Generic I/O function. The output can also be programmed to follow the local DCD or
DTR signals.
2. Remote controlled
The output can be programmed to follow a remote modem data input. A remote unit
can also set/reset the output as well as transferring a sequence of set- and resets of
the output.
3. Follow DCD/Network
The output can be programmable to follow the local DCD or DTR signal.

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=t
a
High level trigged input timing
≥t
a
Trig
Trig
=t
a
Low
level trigged input timing
≥
t
a
Trig
No trig due to low
level shorter thant
a
=t
a
<t
a
Digital Input
The digital input gives the following functionality:
1. Static input
A static digital level trigged input high or low triggers the Generic I/O. With a level
trigged input only the first entry in the Generic I/O list can be trigged by the I/O
input.
The input is trigged when
the selected level has been
stable for ta ms.
A new trig will not occur
until the input has return
to the opposite state an
back again.
2. Pulsed Input
When input is set to edge trigged pulsed the number of pulses counted selects the
entry to be trigged.
For the pulsing of an input, some timings must be kept.
The input is filtered and pulses shorter than ta is discriminated. The time between
pulses must also be kept shorter than Tp. One other restriction on Tp. Is that Tp.³ 2ta.
When time between pulses exceeds Tp the number of pulses are accumulated and an
entry selected by number of pulses counted.
The parameter ta is also used when output pulsing is selected.
The parameters ta and tP are programmable from 10 ms to 2550 ms.
≥t
a
≤
T
p
>T
p
≥t
a
≤
T
p
>T
p
Posi
tive edge trigged input timing
Negativ edge tr
igged input timing
Num
ber of pulses counted
accu
mulated here

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Interface specifications
Power “LV”
Rated voltage 12 to 48 VDC
12 to 34 VAC
Operating voltage 10 to 60 VDC
10 to 42 VAC
Rated current 110 mA @ 12 VDC
55 mA @ 24 VDC
30 mA @ 48 VDC
Rated frequency DC / AC 48 – 62 Hz
Inrush current I2t 0.22 A2s
Startup current* 0.30 Apeak
Polarity Polarity independent
Isolation to All other ports 3 kVrms 50 Hz 1 min
Connection Detachable screw terminal
Connector size 0.2 – 2.5 mm2 (AWG 24 – 12)
Shielded cable Not required
Integrated Services Digital Network (ISDN)
Electrical specification ISDN BRI: ITU-T I.430.
Data rate 300 bit/s – 128 kbit/s
Protocol Euro ISDN /DSS1, Leased line B1 / B2
V.110 asynchronous, HDLC async to sync, HDLC transparent,
Byte transparent X.75- SLP, V.120, X.31 B channel, X.31
D channel, ML-PPP
Protection Installation Fault Tolerant (up to ±60 V)
Isolation to Power port 3 kVrms 50 Hz 1 min
RS-232 2 kVrms 50 Hz 1 min
RS-485 2 kVrms 50 Hz 1 min
I/O 2 kVrms 50 Hz 1 min
Connection RJ-45
Shielded cable Not required
* External supply current required for proper startup.

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RS-422/485
Electrical specification EIA RS-485
2-wire or 4-wire twisted pair
Data rate 300 bit/s – 115.2 kbit/s
Data format 7 or 8 data bits, Odd, even or none parity, 1 or 2 stop bits,
Σ 9 – 12 bits
Protocol Transparent
Retiming Yes
Turn around time 50 µs (half duplex)
Transmission range <1200 m, depending on data rate and cable type (EIA RS-485)
Settings 120 W termination and failsafe biasing 680 W
Protection Installation Fault Tolerant (up to ±60 V)
Isolation to Power port 3 kVrms 50 Hz 1 min
ISDN 2 kVrms 50 Hz 1 min
IO 2 kVrms 50 Hz 1 min
Galvanic connection to RS-232
Connection Detachable screw terminal
Connector size 0.2 – 2.5 mm2 (AWG 24 – 12)
Shielded cable Not required*
Miscellaneous Do not connect RS-232 and RS-422/485 simultaneously
* To minimise the risk of interference, a shielded cable is recommended when the cable is located inside 3 m
boundary to the rails and connected to this port.
The cable shield should be properly connected (360°) to an earthing point within 1 m from this port.
This earthing point should have a low impedance connection to the conductive enclosure of the apparatus
cabinet, or similar, where the unit is built-in. This conductive enclosure should be connected to the earthing
system of an installation and may be directly connected to the protective earth.

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RS-232
Electrical specification EIA/TIA-232
Data rate 1 200 bit/s – 115.2 kbit/s
Data format 7 or 8 data bits, Odd, even or none parity, 1 or 2 stop bits;
Σ 9 – 12 bits
Protocol Transparent
Retiming Ye s
Transmission range Cable length ≤15 m
Isolation to Power port 3 kVrms 50 Hz 1 min
ISDN line 2 kVrms 50 Hz 1 min
I/O 1.5 kVrms 50 Hz 1 min
Galvanic connection to RS-485
Connection 9-pin D-sub female (DCE)
Shielded cable Not required*
Miscellaneous Do not connect RS-232 and RS-422/485 simultaneously
Generic I/O Input
Electrical specification Opto isolated input
Input voltage range 0 – 60 VDC
Input current 5mA @ 60 VDC
Input inactive
Input active
Uin <2.5 V
Uin >5.0 V
Transmission range Cable Length ≤ 15 m
Connection Detachable screw terminal (DCE)
Connector size 0.2 – 2.5 mm2 (AWG 24 – 12)
Isolation to Power port 3 kVrms 50 Hz 1 min
ISDN line 2 kVrms 50 Hz 1 min
RS-232 2 kVrms 50 Hz 1 min
RS-485 2 kVrms 50 Hz 1 min
I/O output 2 kVrms 50 Hz 1 min
Shielded cable Not required*
* To minimise the risk of interference, a shielded cable is recommended when the cable is located inside 3 m
boundary to the rails and connected to this port.
The cable shield should be properly connected (360°) to an earthing point within 1 m from this port.
This earthing point should have a low impedance connection to the conductive enclosure of the apparatus
cabinet, or similar, where the unit is built-in. This conductive enclosure should be connected to the earthing
system of an installation and may be directly connected to the protective earth.

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* To minimise the risk of interference, a shielded cable is recommended when the cable is located inside 3 m
boundary to the rails and connected to this port.
The cable shield should be properly connected (360°) to an earthing point within 1 m from this port.
This earthing point should have a low impedance connection to the conductive enclosure of the apparatus
cabinet, or similar, where the unit is built-in. This conductive enclosure should be connected to the earthing
system of an installation and may be directly connected to the protective earth.
Generic I/O Relay Output
Electrical specification One change over contact
Switching voltage Max 40 VAC/DC
Switching current Max 500 mA AC/DC
Electrical endurance 5 x 105 operations @ 20 W / 20 VA Resistive load
Transmission range Cable Length ≤15 m
Connection Detachable screw terminal (DCE )
Connector size 0.2 – 2.5 mm2 (AWG 24 – 12)
Isolation to Power port 3 kVrms 50 Hz 1 min
ISDN line 2 kVrms 50 Hz 1 min
RS-232 1.5 kVrms 50 Hz 1 min
RS-485 1.5 kVrms 50 Hz 1 min
I/O input 2 kVrms 50 Hz 1 min
Shielded cable Not required*

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Connections
Position Direction* Description Product marking
No 1 In R+ (A’) Receive RS-422/485 4-wire R+
No 2 In R– (B’) Receive RS-422/485 4-wire R–
No 3 In/Out T+ (A) Transmit RS-422/485 4-wire
T/R+
Out T+ (A/A’)
Transmit/Receive
RS-485 2-wire
No 4 Out T– (B) Transmit RS-422/485 4-wire
T/R–
In/Out T+ (A/A’)
Transmit/Receive
RS-485 2-wire
LED Indicators
(for details
see page 18)
DIP-switches accessible under lid
(for details see page 20–23)
DIP-switch S5
RS-422/485 termination
(for details see page 23)
Position Direction* Description Product marking
1 In AC: Neutral
DC: – Voltage
COM
2 In AC: Line
DC: + Voltage
+VA

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Position Direction* Description
1 – NC
2 – NC
3 Out Transmit +
4 In Receive +
5 In Receive –
6 Out Transmit –
7 – NC
8 – NC
Position Direction* Description
No 1 Out Data Carrier Detect (DCD)
No 2 Out Received Data (RD)
No 3 In Transmitted Data (TD)
No 4 In Data Terminal Ready (DTR)
No 5 – Signal Ground (SG)
No 6 Out Data Set Ready (DSR)
No 7 In Request To Send (RTS)
No 8 Out Clear To Send (CTS)
No 9 Out Ring Indicator (RI)
Position Direction* Description Product marking
No 5 In Input + +
No 6 In Input – –
Position Direction* Description Product marking
No 7 In/Out Normal closed contact NC
No 8 In/Out Common contact C
No 9 In/Out Normal open contact NO

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LED indicators
LED Status Description
L1
ISDN Line status
See
below
LED normally showing the status of the ISDN
S0 interface. L1 together with L2 is also used
to indicate error conditions in the IDW-90 and
the connection to the ISDN S0 interface.
L2
ISDN Data connection
See
below
LED Normally showing the state of the data
connection
ANL
Analogue line
OFF No analogue connection established
BLINK Analogue call in progress
ON Analogue line established
DCD
Data Carrier Detect
OFF The DCD signal is inactive.
ON The DCD signal is active.The behavior of the
DCD-line is programable, see configuration
command cdcd. Normaly used to indicat an
active connection
TD
Transmit Data
LED showing data from the DTE, the LED will
blink when data received
RD
Receive Data
LED showing data transmitted to the DTE, the
LED will blink when data transmitted
RTS
Request to Send
OFF RTS signal is inactiveIf used for flow control
this indicates DTE not ready to receive
ON RTS signal is activeIf used for flow control this
indicates DTE ready to receive
DTR
Data Terminal Ready
OFF DTR Signal from DTE is inactive
ON DTR Signal from DTE is activeThe use of the
DTR signal is programmable, see configuration
command cdtr
Status Description
L1 L2
ON OFF S0 connection OK
ON 1 short blink/s Call setup in progress
ON 1 long blink/s Waiting for B channel synchronization
ON ON Data connection is established
OFF OFF No power or Hardware error
0.5 s ON
0.5 s OFF
OFF No S0 connection

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Configuration
All needed configurations and parameter settings are done by the DIP-switches, located
under the top lid of the IDW-90.
DIP-switch settings
Before DIP-switch settings:
Prevent damage to internal electronics from electrostatic discharges (ESD) by
discharging your body to a grounding point (e.g. use of wrist strap)
NOTE DIP-switch alterations are only effective after a power on or commands
“AT**loadsw” and “AT**reset”.
A setting configured by any other method during normal operation, overrides
the DIP-switch setting. However, at power up, the DIP-switch settings have
precedence over the setting configured by any other method.
1
11
1
S2 S1
S3S4
!
Factory settings
ON
1 2 3 4 5 6 7 8
S1
ON
1 2 3 4 5 6 7 8
S2
ON
1 2 3 4 5 6 7 8
S3
ON
1 2 3 4 5 6 7 8
S4
ON
1 2 3 4
S5

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S1 DIP-switch
Selection of DTE speed
ON
1 2 3 4 5 6 7 8
Auto Baud
ON
1 2 3 4 5 6 7 8
19.2 kbit/s
ON
1 2 3 4 5 6 7 8
300 bit/s
ON
1 2 3 4 5 6 7 8
38.4 kbit/s
ON
1 2 3 4 5 6 7 8
600 bit/s
ON
1 2 3 4 5 6 7 8
57.6 kbit/s
ON
1 2 3 4 5 6 7 8
1200 bit/s
ON
1 2 3 4 5 6 7 8
115.2 kbit/s
ON
1 2 3 4 5 6 7 8
2400 bit/s
ON
1 2 3 4 5 6 7 8
230 kbit/s
ON
1 2 3 4 5 6 7 8
4800 bit/s
ON
1 2 3 4 5 6 7 8
Use stored values
ON
1 2 3 4 5 6 7 8
9600 bit/s
S1 DIP-switch
Selection of DTE format
ON
1 2 3 4 5 6 7 8
Use stored values
ON
1 2 3 4 5 6 7 8
7E 2S
ON
1 2 3 4 5 6 7 8
7E 1S
ON
1 2 3 4 5 6 7 8
7O 2S
ON
1 2 3 4 5 6 7 8
7O 1S
ON
1 2 3 4 5 6 7 8
8N 2S
ON
1 2 3 4 5 6 7 8
8N 1S
ON
1 2 3 4 5 6 7 8
8E 2S
ON
1 2 3 4 5 6 7 8
8E 1S
ON
1 2 3 4 5 6 7 8
8O 2S
ON
1 2 3 4 5 6 7 8
8O 1S