Cypress Chameleon CTM-130 Manual do Utilizador descarregar pdf (Página 5)

5 4BMODBUS Command Reference

cmd mode 6 Set the modem to auto connect to both the wireless network and

the MODBUS host interface

cmd save Save the modem configuration to non-volatile memory

cmd pwrmode 2 Power cycle the modem for the configuration to take effect

3 MODBUS Command Reference

3.1 General MODBUS Command Reference

The modem provides a set of common commands used for configuring both types of MODBUS gateways.

These commands are used for enabling the CTM-15X modem to initiate the MODBUS host interface, for

configuring the over-the-air protocol, and for configuring the transmission mode used between the CTM-

15X modem and the MODBUS device.

modbusctm130 n (enable backward compatibility with CTM13x MODBUS messages over-the-air)

This command enables MODBUS backward compatibility with the CTM-13X by using MODBUS RTU

encapsulated in UDP packets for messages transmitted/received over-the-air. The CTM-13X modems only

use MODBUS RTU over UDP as the over-the-air protocol for communicating between other modems

configured as MODBUS master and slave gateways.

n = 0 use MODBUS TCP for over-the-air communications (default)

n = 1 use MODBUS RTU over UDP for over-the-air communications

A cmd save, and a power cycle are required before the modem is configured to use the specified

MODBUS over-the-air protocol.

Examples:

cmd modbusctm130 1 Set MODBUS gateway to send/receive MODBUS RTU over UDP messages

cmd modbusctm130 Query the currently configured MODBUS over-the-air protocol

modbusmode n (sets the MODBUS gateway mode)

This command sets the specified MODBUS gateway mode of the modem, specifically, the transmission

mode between the modem configured as the serial master gateway and the MODBUS serial device

connected to the modem.

n = 0 slave gateway (default)

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