Product overview
Table 261. Capabilities of each product
Product name |
Capabilities |
---|---|
CMeX10 |
M-Bus master for up to 32 M-Bus slaves with IR-interface |
CMeX11 |
M-Bus master for up to 64 M-Bus slaves with IR-interface |
CMeX10S |
M-Bus master for up to 32 M-Bus slaves with IR-interface and RS232 interface |
CMeX11S |
M-Bus master for up to 64 M-Bus slaves with IR-interface and RS232 interface |
CMeX12S |
M-Bus master for up to 128 M-Bus slaves with IR-interface and RS232 interface |
CMeX13S |
M-Bus master for up to 256 M-Bus slaves with IR-interface and RS232 interface |
The CMeX1xS Series makes it possible to expand your CMe Series with up to 256 extra M-Bus slaves. The CMeX1xS Series features standard M-Bus over IR communication and is equipped with the unique IR Pass Through function, making the product series stackable. The modular and expandable design allows the customer to select a suitable level based on price and functionality.
The CMeX10S, CMeX11S, CMeX12S and CMeX13S also add the RS232 interface to use with any standard RS232 communicating device.
The CMeX1xS Series fits into almost any kind of meter collection system. For example:
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With CMe Series to expand your M-Bus master to handle up to 256 M-Bus slaves
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Standalone M-Bus master from RS232 to M-Bus 2-wire
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Split M-Bus 2-wire bus between two M-Bus masters with galvanic isolation using the IR- Pass Through
When powered on, the CMeX10 Series product has an internal boot time before the product can be used. The boot time depends on the numbers of M-Bus slaves connected to the bus. The maximum boot time is approximately 10 seconds. During boot the ERR LED (red) is permanently on.
In normal operation, ERR LED (red) is off and PWR LED (green) is on. During normal communication, TX LED will flash when communication takes place from the DTE to the M-Bus 2-wire bus, and vice versa on the RX LED when M-Bus slave devices transmitting data back to the DTE.
When the product detects a light slave collision, i.e. during secondary addressing, the product will send a break signal of 45 ms on the M-Bus 2-wire bus and to the right IR interface. The product will also send a break signal (45 ms), garbage characters (200 ms) and a break signal (45 ms) again to the DTE (left IR interface and RS232 interface). This procedure makes it possible to detect slave collisions in the DTE even if the used bearer does not support break signaling, i.e. TCP/IP communication.
When the product detects a heavy collision, i.e. during secondary addressing or short circuit of the bus, the product will turn off the bus for 0.5 seconds. The product will also send a break signal of 45 ms to the right IR interface and a break signal (45 ms), garbage characters (200 ms) and a break signal (45 ms) again to the DTE (left IR interface and RS232 interface).
When the M-Bus 2-wire bus is in idle state and the idle current is too high (depending on CMeX10 Series model), the product will turn off the M-Bus 2-wire interface and restart. The ERR LED (red) will be permanently on during this state. This procedure will continue until the idle current is within acceptable level for the CMeX10 Series model.
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Serial number
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M-Bus out
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DIN-rail lock
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IR interface
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Power supply N
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Power supply L
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Power LED (green)
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Error LED (red)
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Serial number
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RX LED (yellow)
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TX LED (yellow)
|
|
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M-Bus out
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M-Bus out
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RS232 in
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DIN-rail lock
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IR interface
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M-Bus out
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Ground
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Power supply N
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Power supply L
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Power LED (green)
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Error LED (red)
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Serial number
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RX LED (yellow)
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TX LED (yellow)
Table 262. PWR LED (green) indicates mains supply
Mode |
Description |
Visual |
---|---|---|
Permanently on |
Mains power connected |
|
Permanently off |
No mains power connected |
Table 263. ERR LED (red) indicates M-Bus 2-wire bus status
Mode |
Description |
Visual |
---|---|---|
Permanently on |
Short circuit of the M-Bus 2-wire bus |
|
Permanently off |
Normal mode, Idle |
|
Short flash every second |
No M-Bus slaves connected |
|
Flashing for one second |
M-Bus slave collision |
Table 264. RX LED (yellow) indicates communication from M-Bus slave to DTE
Mode |
Description |
Visual |
---|---|---|
On/Flashing |
M-Bus slave is transmitting data |
|
Off |
M-Bus slave is not transmitting data |
Table 265. TX LED (yellow) indicates communication from DTE to M-Bus slaves
Mode |
Description |
Visual |
---|---|---|
On/Flashing |
DTE is transmitting data |
|
Off |
DTE is not transmitting data |
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