RecvReqMode (ENUM)ΒΆ

TYPE RecvReqMode :

Attributes:
qualified_only
InOut:

Name

Initial

Comment

None

0

No requests are received

Receive

1

The function block is ready to receive a new request. If the Modbus Slave/Server has received a modbus request, the function block outputs are updated.

PositiveResponse

3

The request is responded positively.

NegativeResponse

4

After checking the request, this function block refuses to accept this request nd sends a negative response to the Modbus Master/Client The error reason is given with the inputs ExceptionCode