Festo Кабели и принадлежности - Manual (Page 103)

A. Technical appendix
A−15
Festo P.BE−SPC200−COM−CANDN−EN en 0511a
Read register
Command Message, WRC = 20
d
Byte Function Contents
Byte 0 Control byte LOAD = 1 (see section 5.2.3)
Byte 1 Subindex Subindex 1...100 Z Register 0...99
Byte 2 Command Message type 20
d
Byte 3 Response Message type 0 (no update permitted)
Byte 4 Cmd. Data 1 Not relevant
Byte 5 Cmd. Data 2
Byte 6 Cmd. Data 3
Byte 7 Cmd. Data 4
Response Message
Byte Function Contents
Byte 0 Status byte LOAD COMPLETED = 1 (see section 5.2.3)
Byte 1 *)
Byte 2 Fault code See fault treatment in section 6.5
Byte 3 RMT Copy from byte 2 of the Command Message
Byte 4 Resp. Data 1 **) Value in signed 16 bit: −32768 ... +32767 **)
Byte 5 Resp. Data 2
Byte 6 Resp. Data 3 *)
Byte 7 Resp. Data 4
*) Not relevant
**) In the event of a fault: extended fault code (see section 6.5)