C

Message (05): Force Single Output

Format:

Address Func

Point

Data

Error Check

05

Number

 

 

00H

Hi Lo Hi Lo

Query

Address

Func

Point

 

 

 

Data

Error Check

 

05

Number

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

00H

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Hi

Lo

Hi

 

 

Lo

 

 

 

 

Normal Response

 

 

 

 

 

 

Query:

HAn address of 0 indicates a broadcast request. All slave stations process a broadcast request and no response is sent.

HThe function code is equal to 5.

HThe point number field is two bytes in length. It may be any value less than the highest output point number available in the Micro PLC. It is equal to one less than the number of the output point to be forced on or off.

HThe first byte of the data field is equal to either 0 or 255 (FFH). The output point specified in the point number field is to be forced off if the first data field byte is equal to 0. It is to be forced on if the first data field byte is equal to 255 (FFH). The second byte of the data field is always equal to zero.

Response:

HThe normal response to a force single output query is identical to the query.

Note

The force single output request is not an output override command. The output specified in this request is ensured to be forced to the value specified only at the beginning of one sweep of the Micro PLC user logic.

GFK±0804B

Appendix C RTU Protocol

C-13

Page 115
Image 115
GE GFK-0804B manual Message 05 Force Single Output Format