System air W-Modbus User manual

24V
AC/DC A+ B-
GND
The W-Modbus units have 24 VAC/VDC power in/out connection and con-
nection for Modbus RTU communication via RS485.
WARNING: When powering the W-Modbus device using 24 VAC, the
power supply/transformer should not be shared with another Modbus de-
vice also sharing a RS485 connection. This is to avoid ground loops caused
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Install the W-Modbus unit next to the device it should be connected to.
APPLICATION AREA
The W-Modbus product transmits Modbus RTU frames wirelessly. It is de-
signed to be used indoors as a Modbus RTU cable replacement.
GENERAL
All relevant personnel must acquaint themselves with these instructions
before installation. Warranty is subject to void if the product is not hand-
led accordingly with the outlined instructions. Any damage to the product
or parts due to improper handling will void the warranty.
WARRANTY
The warranty or service agreement will be deemed void if:
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(2) The serial number on the product has been made ineligible or is missing.
THE PACKAGING CONTAINS
1 x W-Modbus or 1x W-Modbus PRO
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TECHNICAL DATA
Power supply: 24 VAC ±15% 50-60 Hz, 24 VDC ±15%
Max. power consumption: 2.5 W
24 V output max. power: 10 W
Auto resettable fuse: Yes
Cable rating, connector: solid / stranded 0.14 - 0.5 mm2/ 0.2 - 0.5
mm2
Conductor sizes (AWG): 24 – 20
Frequency band: 2.45 GHz, ISM band (2400-2483 MHz)
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Number of Nodes: 100 Nodes in one wireless network
Number of hops: Max 8 hops in the meshing network
Range per hop: 500 m line of sight (approximately 50-
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IP class: 40
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Ambient temperature: Operating: -20 to +55°C
Storage: -30 to +80°C
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Dimensions: W86.0 x H86.0 x D25.5 mm
A W-Modbus network consists of a single W-Modbus Gateway connected
to the Modbus Client using an RS485 cable, and up to 100 W-Modbus No-
des, each of them connected to one Modbus Server over RS485. Every
device can act as either a Gateway or a Node, selectable by the 3 pole
switch - see Commissioning section.
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Modbus address. The scanning is done by querying each Modbus address,
hence the process may take up to 2 minutes. If the W-Modbus Node cannot
W-Modbus Node
Modbus RTU cable
Wireless Mesh
W-Modbus PRO Node
W-Modbus Gateway
Client
Server
Server
Server
Server
Server
Server Server Server Server
Server
MANUAL W-Modbus and W-Modbus PRO
FCC ID: XRSTIMOMWAN201
IC: 8879A-TIMOMWAN201
ELECTRICAL SAFETY
1PN[SWCNKƂGFGNGEVTKEKCPUOC[ perform interventions in connection with
electrical installation. Always fol-low local/national rules when performing
this type of electrical installation. When connecting a 24 V isolation
transformer, this must be done in accor-dance with IEC 61558-1.
POWER AND RS485 CONNECTIONINSTALLATION
SYSTEM OVERVIEW
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Modbus Client connected to the W-Modbus Gateway.
If adding, removing or changing the Modbus address of the connected de-
vice, double press the push button to initiate a new scanning.
W-Modbus is an end device with internal termination resistor.
With the PRO version of W-Modbus, up to four Modbus Servers can be
connected to one W-Modbus PRO Node - making it even easier to con-
nect multiple devices located in close proximity to each other.
W-Modbus and W-Modbus PRO are fully compatible and can be mixed
in a system. All instructions below apply to both models.
W-MODBUS PRO
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2. 6JG 9/QFDWU GPENQUWTG KU YCNN OQWPVGF CPF ƂVU QPVQ C LWPEVKQP
box. Start with mounting the backplate of the enclosure.
3. Connect the power supply and the Modbus device to the W-Modbus
unit, as shown to the right. Use the rear and/or top knockouts for
cable entry.
4. All W-Modbus units are factory set for Node operation, without the
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system, adjust the dip switches accordingly.
5. Secure the front plate to the mounted back plate.
6. Check that the W-Modbus unit and its wiring are securely mounted (if
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The device is now ready for commissioning.
The label on the back of the product shows the product type:
W-Modbus or W-Modbus PRO.
www.systemair.com

Start by selecting which device to use as the W-Modbus Gateway and position the
3 pole switch in the middle position. This unit will reboot into Gateway Commissio-
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also adjust the dip switch to the correct baud rate, parity and stop bit(s)
All powered W-Modbus Nodes within range will now connect to the Gateway.
This process takes a few minutes. Nodes further away will connect to a closer
W-Modbus Node if the Gateway is out of reach. When a Node is connected it will
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Check that all Nodes installed are indicating connection, and then set the 3 pole
switch to bottom position on the W-Modbus Gateway. Now the entire network will
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indicate status in accordance with the system status section.
1
2
3
COMMISSIONING
MANUAL W-Modbus and W-Modbus PRO
Flow
Flow
Flow
Flash
ON
1 2 3 4 5
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can be found in the table to the right.
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all connected W-Modbus Nodes, meaning the W-Modbus Gateway is the only
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12345
DCWF OFF OFF - - -
DCWF OFF ON - - -
38400 baud ON OFF - - -
DCWF ON ON - - -
No parity - - OFF - -
Even parity - - ON - -
1 stop bit - - - OFF -
2 stop bit - - - ON -
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7UG)CVGYC[UGTKCNEQPƂIWTCVKQPQP0QFG OFF
PUSH BUTTON
Push 6WTP10.'&U #NN.'&5VWTPQP
(turns OFF after 30 min)
Double push Rescan for connected Mod-
bus Server (Only Node)
Hold 10 s Uncommissioning OKF.'&KPFKECVGUDNWG
Hold 20 s Firmware update mode* OKF.'&KPFKECVGUTGF
PUSH BUTTON
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SYSTEM MODE AND STATUS
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the button once to turn on for another 30 minutes.
Does the unit have power?
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power connection.
Is the unit connected to the network?
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light is not connected to the network. Reference the commission
section to ensure the unit indicates connection before switching the
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is out of range from the network. Try installing an extra W-Modbus
unit in between for better wireless coverage.
Is the network within the limits of the maximum (100) Nodes al-
lowed? Make sure no more than 100 Nodes are connected to one
W-Modbus Gateway. If more than 100 Nodes are needed, another
W-Modbus gateway are required. Set it up in the same way as be-
fore.
If the Wireless Network Status indicates bad wireless network (red
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the requirements or add an extra W-Modbus inbetween to get bet-
ter wireless coverage
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check if the RS485 cable is correctly installed and make sure the
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green) but not all Nodes rebooted to the secure network when the
Gateway was set to secure network. Make sure only one unit is set
to Gateway mode during commissioning. It is only possible to install
one network at a time.
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BAUD RATE, PARITY AND STOP BIT
The commissioning process is used to connect the W-Modbus devices to the same wireless
network. All W-Modbus devices will come from factory uncommissioned in Node mode. If the
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the gateway.
Mount and power up each device before starting with step 1 below.
TIP: It is possible to add a new node to an existing system.
Just mount and power up the device as usual, then redo the
commissioning starting from step 1.
TIP: To speed up the connection process, set the device inten-
ded to be Gateway in Commissioning mode before mounting
the nodes. In that way they will connect as soon as they are
powered, and the waiting time in step 2 above is reduced.
W-MODBUS GATEWAY W-MODBUS NODE
*Flashes green when connecting to the network
Gateway/Node Indicator
Gateway
Node*
Wireless Network Status
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$CF.KPM
Modbus RTU Communication
Communication established, device found
No communication
Gateway
Gateway Commissioning
Node
Device Mode
TROUBLESHOOTING
in the entire network.
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used on the Nodes - effectively mixing
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5th DIP switch to override the global con-
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on the Node.