11 Technical data
106 5831400/02 EN
11.4 Modbus RTU
Factory settings
Device version Modbus address Baud rate Parity
MESSKO® COMPACT (RM)
Oil temperature indicator
MT-ST160SK/…
MT-ST160SK/…/RM
21 19200 EVEN
MESSKO® COMPACT (RM)
Winding temperature indicator
MT-ST160W(R)/…
MT-ST160W(R)/…/RM
22 19200 EVEN
Table14: Modbus RTU factory settings
Input register
Function code "04" to read the information.
Validity of the measured value stored in the INPUT register
addresses 1…3:
It can be seen via the DISC register address with address 4
(Boolean) whether the measured value is invalid (0) or valid
(1). We recommend evaluating this register address alongside
the measured value query.
Device status:
The INPUT register address0 indicates the device status (0:
the device self-diagnostic could not find any errors). We rec-
ommend querying the device status either parallel to the mea-
sured values or when needed (e.g. during troubleshooting,
fault elimination).
For details, see Fault elimination.
Address Data type Designation
0 UINT16 Device status, see under status codes [►Section 9.5, Page
98]
1, 2 FLOAT32 Measured value (temperature in °C) with decimal places;
Oil temperature or Winding temperature
3 SINT16 Measured value (temperature in °C) as an integer;
Oil temperature or Winding temperature
4…16 - Reserved for future use