AMPTRON Ai205 - Read Status of Relay; Query; Response

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Fun: function code

Data start reg hi: start register address high byte

Data start reg lo: start register address low byte

Data #of reg hi: number of register high byte

Data #of reg lo: number of register low byte

CRC16 Hi: CRC high byte

CRC16 Lo: CRC low byte

1.Read Status of Relay

Function Code 01

This function code is used to read status in Ai205.

1=On 0=Off

There are 2 Relays in Ai205. The Address of each Relay is

Relay1=0000H and

Relay2=0001H.

The following query is to read Relay Status of Ai205 Number 17.

Query

Addr Fun relay start relay start relay #of relay #of CRC16 CRC16

reg hi reg lo regs hi regs lo Hi Lo

11H 01H 00H 00H 00H 02H BFH 5BH

Table4.4 Read the status of Relay1 and Relay2 Query Message

Response

The Ai205 response includes the Ai205 address, function code, quantity of

data byte, the data, and error checking. An example response to read the status

of Relay1 and Relay2 is shown as Table4.5. The status of Relay1 and Relay2 is

responding to the last 2 bit of the data.

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