Cypress Chameleon CTM-130 Bedienungsanleitung PDF herunterladen (Seite 3)

MODBUS Configuration Commands

messages can be configured to be sent as MODBUS RTU messages encapsulated in UDP packets, or as

MODBUS TCP messages. MODBUS RTU over UDP messages minimizes wireless data usage at the cost of

unreliable data delivery. MODBUS TCP messages provide reliable data delivery at the cost of increased

wireless data usage. The default configuration for the gateway in MODBUS mode is to use MODBUS TCP

as the over-the-air protocol.

2 MODBUS Configuration Commands

The following section details the CTM-200 gateway specific commands used to configure the gateway as

either a MODBUS slave gateway or a MODBUS master gateway.

Note: For all commands to be saved to non-volatile memory, a “cmd save” must be entered before

turning off or restarting the gateway. After saving commands, a power cycle is required for the CTM-

200 to run in a MODBUS gateway mode

2.1 MODBUS Serial Master Gateway Configuration

The following set of gateway commands will configure the gateway to act as a MODBUS serial master

gateway using MODBUS RTU between the MODBUS master application and the gateway, and using

MODBUS RTU over UDP over-the-air.

cmd factory Reset gateway configuration to factory defaults

cmd modbusctm130 1 Set gateway to use MODBUS RTU over UDP over-the-air

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Cypress Chameleon CTM-130 Bedienungsanleitung Seite 3