Modbus Register Mapping - Siemens SITRANS F Series Operating Instructions Manual

Modbus communication
A.4 Modbus register mapping
Modbus Data type /
register Size in bytes
10307 Unsigned / 4 Modbus coil bit‐
10309 Unsigned / 2 Modbus coil
...
10399 Unsigned / 2 Modbus coil
If default value is "-" the command "Set to default" will not set this parameter to default.
1
A.4

Modbus register mapping

The device provides the possibility to map each existing parameter to a freely chosen Modbus
register for communication purposes over channel 1.
136
Parameter Description
Bit mask which is compared
mask 2 against the register value
specified with Modbus coil reg‐
ister 2 to determine the coil
value. If any bit of the register
value is set which is also set in
the bit mask then the coil val‐
ue is true otherwise false.
Output parameter that informs
length 2 about size in bytes of parame‐
ter that is specified by Modbus
coil address 2. Could be used
to identify the relevant bits of
the Modbus coil bitmask 2
Output parameter that informs
length 20 about the size in bytes of the
parameter that is specified by
Modbus coil address 20.
Could be used to identify the
relevant bits of the Modbus
coil bitmask 20
Default value Value range /
[units] Setting options
1
(units register)
0 0 - 4294967295 Read / write
-
-
SITRANS FST030 (Modbus)
Operating Instructions, 08/2018, A5E37367739-AD
Access lev‐
el
Read only
Read only