Diagnostic Messages To The S7 Controller; Events That Trigger A Diagnostic Message - Siemens SIMATIC PN/M-Bus LINK Operating Instructions Manual

10.2

Diagnostic messages to the S7 controller

10.2.1

Events that trigger a diagnostic message

Diagnostics
The table below provides you with the following information:
● Message text assigned to diagnostic
● Event for triggering the diagnostics
● Possible remedies
Diagnostics-relevant events
Table 10- 3
Diagnostics
number
1810
1811
1812
1813
Note
Collision detection
An increase in power of > 25 mA on the M-Bus side is considered to be a collision on the
M-Bus. Collision means that: At least two M-Bus devices are sending simultaneously.
Note
M-Bus overcurrent
A current > 200 mA on the M-Bus is considered to be an overcurrent.
PN/M-Bus LINK
Operating Instructions, 03/2018, A5E44260928-AA
Diagnostics-relevant events
Message text
M-Bus disconnected
M-Bus overcurrent
Read error during
device access - prima-
ry device address /
serial number: {1:x}
Collision - Collision at
primary address /
serial number: {1:x}
10.2 Diagnostic messages to the S7 controller
Event for triggering
M-Bus cable not connect-
ed or no device connected
to the M-Bus
Overcurrent on the M-Bus
An error occurred while
accessing a certain de-
vice.
Communication collision
on the M-Bus
Diagnostics
Module / To correct or avoid
submod- error
ule
M-Bus Check M-Bus
master connection
M-Bus Check M-Bus or
master connected devices
for short-circuit
M-Bus Check device
device parameters
M-Bus Check if multiple
device devices use the
same address
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