Control Techniques Modbus TCP, Руководство пользователя

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Modbus TCP Module Modbus Registers
9.2 Legacy Mode
The Modbus TCP Module can also operate in Legacy Mode, which uses the same registers
as the Modbus RTU Module. Some registers differ from those specified in the Modbus
Protocol Specification.
Initialising Legacy Mode
If the device has been operating in Standard Mode, it must be reset before communicating
in Legacy Mode. To initialise the device for Legacy Mode, either:
• cycle control power or
• reset register 40001 to zero (write zero to bits 0~15)
Registers
NOTE
Legacy Mode reports read-only status information in registers 40003 onwards, to
match the register definitions of the Modbus RTU Module. Identical data is also
available via registers 30003 onwards.
Register Description Bits Details
40001 Reserved 0 to 14 Reserved
15 Must be zero
40002 Command
(single write)
0 to 2 To send a command to the starter, write the
required value:
1 = Start
2 = Stop
3 = Reset
4 = Quick stop (coast to stop)
5 = Forced communication trip
3 to 15 Reserved
40003 Starter state 0 to 3 1 = Ready
2 = Starting
3 = Running
4 = Stopping
6 = Tripped
4 1 = Positive phase sequence
5 1 = Current exceeds FLC
6 Reserved
7 to 15 Reserved
40004 Trip code 0 to 7 See Trip Codes on page 12
8 to 15 Reserved
40005 Motor current 0 to 7 Average 3-phase motor current (A)
8 to 15
40006 Motor temperature 0 to 7 Motor thermal model (%)
8 to 15
40007 Reserved
40008 Reserved
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