Circutor STM-H10, Instruction Manual

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STM-S12, STM-S24, STM-H6, STM-H10, STM-H20
Instruction Manual
5�2�- MODBUS PROTOCOL
Within the Modbus protocol, the
SMT-Sxx-485
uses the RTU (Remote Terminal Unit) mode.
The Modbus functions implemented in the device are as follows:
Function 0x02: Reads the status of an input
Function 0x03 and 0x04 : Reading integer registers.
Function 0x10
:Writing multiple registers.
5�3�- MODBUS COMMANDS
Note:
To facilitate readout of a data set in a single instruction, a set of consecutive memory positions
has been defined, see ( "
5.3.2. MEMORY MAP IN BLOCKS"
).
All Modbus map addresses are in Hexadecimal format.
5�3�1�- MEASUREMENT VARIABLES
The
Function 0x04
is used for these variables.
Table 9: Modbus Memory Map: Temperature of the device�
Temperature value
Variable Address Valid data range Units
Temperature of the
STM
device 1194 -200... 1000 ºC ºC x 10
Temperature of the PT100 probe 11F8 -200... 1000 ºC ºC x 10
Without use 11F9 - -
Table 10: Modbus Memory Map: Voltage, current and power measurement�
Voltage, current and power measurement
Variable Address Valid data range Units
Temperature of the PT100 probe 120B -200 ... 1000 ºC ºC x10
Instantaneous voltage of the installation 120C 25 ...1550 V
Total installation current 120D 0 ... 2560 A
Instantaneous power of the installation 120E - 120F 0 ...384 kW
Average voltage of the installation 1210 0 ...1550 V
Total average installation current 1211 0 ... 2560 A
Average power of the installation 1212 - 1213 0 ...384 kW
Table 11: Modbus Memory Map: Instant current measurement of channels�
Instantaneous current measurement of channels
Variable Address Valid data range Units
Instantaneous current channel 1 1004 0 ... 10000 A x100
Instantaneous current channel 2 1005 0 ... 10000 A x100
Instantaneous current channel 3 1006 0 ... 10000 A x100
Instantaneous current channel 4 1007 0 ... 10000 A x100
Instantaneous current channel 5 1008 0 ... 10000 A x100
Instantaneous current channel 6 1009 0 ... 10000 A x100