Modbus Integration (AccMtr - subsystem-specific extension)

The Accumulator meter (AccMtr) object supports following properties of the subsystem-specific extension Integration.

✳ Indicates a Siemens proprietary property.

Data type ✳
Data type defines the data type for encoding the subsystem-specific data type.
32 bit integer data formats with Registers:
Encoding format	Description	Byte order
U32-B U32-B-S U32-L U32-L-S	unsigned 32-bit; big-endian unsigned 32-bit; big-endian; byte swapped unsigned 32-bit; little-endian unsigned 32-bit; little-endian; byte swapped	dd cc bb aa cc dd aa bb aa bb cc dd bb aa dd cc
S32-B S32-B-S S32-L S32-L-S	signed 32-bit; big-endian signed 32-bit; big-endian; byte swapped signed 32-bit; little-endian signed 32-bit; little-endian; byte swapped	dd cc bb aa cc dd aa bb aa bb cc dd bb aa dd cc
U48-B U48-B-S U48-L U48-L-S	unsigned 48, big-endian unsigned 48, big-endian byte swapped unsigned 48, little-endian unsigned 48, little-endian byte swapped	ff ee dd cc bb aa ee ff cc dd aa bb aa bb cc dd ee ff bb aa dd cc ff ee
S48-B S48-B-S S48-L S48-L-S	signed 48, big-endian signed 48, big-endian byte swapped signed 48, little-endian signed 48, little-endian byte swapped	ff ee dd cc bb aa ee ff cc dd aa bb aa bb cc dd ee ff bb aa dd cc ff ee
U64-B U64-B-S U64-L U64-L-S	unsigned 64, big-endian unsigned 64, big-endian byte swapped unsigned 64, little-endian unsigned 64, little-endian byte swapped	hh gg ff ee dd cc bb aa gg hh ee ff cc dd aa bb aa bb cc dd ee ff gg hh bb aa dd cc ff ee hh gg
S64-B S64-B-S S64-L S64-L-S	signed 64, big-endian signed 64, big-endian byte swapped signed 64, little-endian signed 64, little-endian byte swapped	hh gg ff ee dd cc bb aa gg hh ee ff cc dd aa bb aa bb cc dd ee ff gg hh bb aa dd cc ff ee hh gg
Example: The decimal number 1144201745 (depends on the encoding format) has been sent as an unsigned 32-bit integer data format. Possible encoding: `1144201745 ---> 0x44332211 :` U32-B (high word first, high byte first) `1144201745 ---> 0x33441122 :` U32-B-S (high word first, low byte first) `1144201745 ---> 0x11223344 :` U32-L (low word first, low byte first) `1144201745 ---> 0x22114433 :` U32-L-S (low word first, high byte first)
32 / 64 bit float data formats with Registers:
Encoding format	Description	Byte order
F32-B F32-B-S F32-L F32-L-S	float 32, big-endian float 32, big-endian; byte swapped float 32, little-endian float 32, little-endian; byte swapped	dd cc bb aa cc dd aa bb aa bb cc dd bb aa dd cc
F64-B F64-B-S F64-L F64-L-S	float 32, big-endian float 32, big-endian; byte swapped float 32, little-endian float 32, little-endian; byte swapped	hh gg ff ee dd cc bb aa gg hh ee ff cc dd aa bb aa bb cc dd ee ff gg hh bb aa dd cc ff ee hh gg
Example: IEEE-754 32-bit float data format encoding

Polling times ✳
"Polling times" defines the polling timer to be used to poll the subsystem-specific data point. The interval values for T1, T2, T3 can be configured in the Fieldbus-Management-Object. Heartbeat timers and Polling timers are independent from each other.
T1	Highest priority. Typical interval value: 0.5s...5s.
T2	Medium priority (default). Typical interval value: 5s…60s.
T3	Low priority. Typical interval value: minutes ... hours.