7 Troubleshooting
7.1 When running installation, no meters are found
Please verify:
• CMeX50 antenna installation and position, see section 4.2.4.
• Wireless M-Bus slave mode must be same as configured CMeX50 wireless M-Bus mode, see
section 5.5.2 and 6.3.16.
7.2 CMeX50 does not respond to M-Bus master commands
Please verify M-Bus status:
• Voltage over M-Bus slave should be between 21 VDC and 42 VDC (if M-Bus slave input is used).
• All M-Bus slaves connected to the M-Bus master must have unique primary addresses or
secondary addresses depending on addressing mode used.
• Verify M-Bus slave baud rate used by M-Bus master. M-Bus master baud rate must be identical
to the CMeX50 baud rate.
• Encrypted wireless M-Bus slaves without uploaded keys will send meter data in container mode.
Add keys to meters via the LCD display or M-Bus commands
7.3 Change from T1/C1a/C1b mode to S1 mode or vice versa does not work:
The CMeX50 needs to be switched off and on again to make the change take effect.
If the problem persists, please contact Elvaco AB.
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