Diehl SHARKY 774 COMPACT - Communication; M-Bus wired (optional)

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Error messages when assembly is wrong
Error code Description
E - 3 Temperature sensors were mixed up during installation or
connection.
E - 6 Meter were installed against the planned ow direction.
During system downtime the error messages "E - 3" and "E - 6"
may appear without possible wrong assembly inside.
4. Communication
4.1 M-Bus wired (optional)
A 2 pin M-Bus line lead out of the housing.
Connect the M-Bus line with the marked connections of the
M-Bus Master.
Here it concerns a serial interface for communication with external devices
(M-Bus control centres), e.g. IZAR CENTER.
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Standardised according to EN 13757-3
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Galvanic isolation
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Polarity reversal protection
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Power consumption: One M-Bus load
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Primary or secondary addressing
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Baud rate 300 or 2400 baud (automatic baud rate detection)
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Protocol: M-Bus
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Reading interval: every 3 minutes *
* the meter detects, if the reading is done more often than every 3 min-
utes. The meter stopped sending responses and conrms with the error
code E-5 (too frequent read-out via M-Bus). The error is automatically
deleted after a variable break time and communication is then possible
again.