Prosoft-technology 5201-MNET-ASCII Manual de usuario descargar pdf (Pagina 29)

MNET ♦ ProLinx Gateway Modbus TCP/IP Protocol Configuration

Modbus TCP/IP Interface Module Driver Manual

ProSoft Technology, Inc. Page 29 of 78

September 1, 2010

2.5.10 Slave Address

0 - Broadcast to all nodes

1 to 255

Use this parameter to specify the slave address of a remote Modbus Serial

device through a Modbus Ethernet to Serial converter.

Note: Use the Node IP Address parameter (page 28) to address commands to a remote Modbus

TCP/IP device.

Note: Most Modbus devices accept an address in the range of only 1 to 247, so check with slave

device manufacturer to see if a particular slave can use addresses 248 to 255.

If the value is set to zero, the command will be a broadcast message on the network. The Modbus

protocol permits broadcast commands for write operations. Do not use node address 0 for read

operations.

2.5.11 Modbus Function

1, 2, 3, 4, 5, 6, 15, or 16

This parameter specifies the Modbus Function Code to be executed by the

command. These function codes are defined in the Modbus protocol. The

following table lists the purpose of each function supported by the module. More

information on the protocol is available from www.modbus.org.

Modbus Function Code Description

1 Read Coil Status

2 Read Input Status

3 Read Holding Registers

4 Read Input Registers

5 Force (Write) Single Coil

6 Preset (Write) Single Register

15 Force Multiple Coils

16 Preset Multiple Registers

1 2 ... 24 25 26 27 28 29 30 31 32 33 34 ... 77 78

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Prosoft-technology 5201-MNET-ASCII Manual de usuario Pagina 29