1
M-LINK
Network adapter with Access function
LED indicator
light
Description of the function
INIT/ERR
•
A red indicator light indicates the status of the device.
•
A red indicator light flashes when the device starts up.
•
The indicator light goes off when the device has been initialized.
•
If the indicator light continues to flash, initializing of the M-Link was not suc-
cessful, or a no response alarm is received from a device in the RTU or C bus.
LINK
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A green indicator light indicates the status of network connection.
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When the signal light is off, there is no connection with the LAN.
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When the signal light is off most of the time but blinks occasionally, the
LAN connection is operational.
•
When the signal light is on almost constantly but is turned off for brief
moments, the Internet connection is operational.
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When the signal light is constantly on, the Access connection is operational.
C COM
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When the signal light blinks, M-Link is receiving data from a device
connected in the C connector.
RS-485 COM
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When the signal light blinks, M-Link is receiving data from the Modbus RTU bus.
LED functions
Installation and connections
Installation:
Fixed on a DIN rail.
Commissioning of M-Link’s connections:
1. The network cable is connected in M-Link’s Ethernet connection.
2. M-Link is connected to the connector of an M-Link-compatible device using a
direct RJ45 cable. M-Link’s power supply is available at this C connector. The
GSM modem of a C203 or S203 device (GSMMOD) is connected to the free C
connector. M-Link’s terminal strips:
2
5
8
3
6
1
4
7
2x0.8
2x(2+1)x0.24
RX
~
B
TX
A
External power supply for M-Link.
An
external power supply is used if no M-Link-
compatible device is connected to M-Link’s C
connector.
Modbus RTU bus
Connectors 7 and 8 are not used
2
2
3
1
M-LINK is a media converter for converting Ouman’s Modbus (RTU / TCP)
based devices, or those of other manufacturers, to the Ouman system. The
device can be linked to an existing internet connection, through which the
device creates a secure connection between M-LINK and the Ouman Ounet
online monitoring service. If an internet connection is not available, it is pos-
sible to use a 3G-MOD4 modem, for example, to establish a ready-to-use
connection to the subject. M-LINK can also be used in a local area network
without an internet connection.
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An internal WEB user interface for device management: Connected
devices are deployed using the Ouflex BA Tool.
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Ethernet connection (DHCP / Fixed IP) with
Access function.
Access is a
service offered by Ouman for creating a secure VPN connection between
the device and the Ounet online monitoring service. With the service, the
device can also be operated remotely through an internet browser. The
service is included in the price throughout the device’s life cycle.
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Modbus RTU connection using screw connectors: (Max 10 devices or
2,000 points, RTU + TCP)
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Modbus TCP connection RJ45: (Max 10 devices or 2,000 points, RTU + TCP)
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With a C connector (RJ45), it is also possible to connect (one) Ouman
controller (Ouflex M, Ouflex M BA, S203, C203, H23) + GSM Modem
when using S203 or C203.
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Possible to make point transfers from one device to another (Modbus
RTU / Modbus TCP) (requires the Ouflex BA Tool)
Communication protocols:
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Modbus RTU
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Modbus TCP/IP
