Modbus Register Mapping - Siemens SITRANS F series Operating Instructions Manual

Modbus communication
A.4 Modbus register mapping
Modbus Data type /
register Size in
bytes
10306 Unsigned / 2 Modbus coil
10307 Unsigned / 4 Modbus coil
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.
128
Parameter Description
Specifies the Modbus register
register 2 whose value is checked
against Modbus coil bitmask
2 to determine the coil value
(false or true). A register
value of 65535 specifies that
this coil mapping is unde-
fined.
Bit mask which is compared
bitmask 2 against the register value
specified with Modbus coil
register 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 value is true other-
wise false.
Output parameter that in-
length 2 forms about size in bytes of
parameter that is specified by
Modbus coil address 2. Could
be used to identify the rele-
vant bits of the Modbus coil
bitmask 2
Output parameter that in-
length 20 forms about the size in bytes
of the parameter that is speci-
fied by Modbus coil address
20. Could be used to identify
the relevant bits of the Mod-
bus coil bitmask 20
Default value Value range /
[units] Setting options
1
(units register)
Undefined
0 0 - 4294967295 Read /
-
-
SITRANS F Ultrasonic flowmeters FST030 (Modbus)
Operating Instructions, 08/2017, A5E37367739-AC
Access
level
Read /
write
write
Read only
Read only