Mitsubishi RS232/485/LAN Serial Communication Control Instrukcja Użytkownika Pobierz pdf (Strona 5)

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Modbus Server - Mitsubishi Electric G50 datasheet v10 r11 eng

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Modbus interface

General

Max. Number of

Mitsubishi Elec.G50s

Up to 4 G50s can be supported. There are four different models for this gateway,

supporting: 1, 2, 3 or 4 G50s respectively.

Virtual signals

• One communication error virtual signal per every G50 device defined.

• One communication error virtual signal per every group into the G50 device.

• One virtual signal per every group into the G50 device to enable/disable this

group in the polling process.

All these virtual signals can be read/written from Modbus.

Modbus interface

Device type Slave.

Modbus modes

supported

TCP, RTU RS232 or RS485.

Modbus TCP

configuration

parameters

• IP address.

• Subnet mask.

• Default gateway address.

• TCP port.

Modbus RTU

configuration

parameters

• RS232/RS485.

• Baud rate.

• Slave number.

Points

Configuration

No point configuration needs to be done, all the Mitsubishi Electric G50

signals are automatically associated to predefined fixed Modbus Addresses.

Modbus function

codes supported

Read functions:

• 3- Read holding registers.

• 4- Read input registers.

Write functions:

• 6- Write single register.

• 16- Write multiple registers.

If poll records are used to read/write multiple records, the range of addresses requested must contain

valid addresses, if not the corresponding Modbus error code will be responded.

Modbus data coding

All the point's values are coded in 2 bytes registers (even if their possible values

are 0 and 1) and expressed in MSB..LSB.

1 2 3 4 5 6 7 8 9 10 11

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