Pepperl+Fuchs SmartRunner Detector, Руководство пользователя

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SmartRunner Detector
Operation
5 Operation
5.1 Communication via the RS-485 Interface
The controller and reader communicate via the RS-485 interface during operation. Make sure
that the basic communication settings have been made on the reader, such as setting the
reader address and baud rate.
A distinction is made between request telegrams that the controller sends to the reader and
response telegrams that the reader sends to the controller. Each byte of a request or response
telegram consists of 9 bits (8 data bits + 1 parity bit).
5.1.1 Request Telegram
A request telegram always consists of 2 bytes. The second byte corresponds to the first byte,
however the 8 data bits of the first byte are inverted.
Structure of a Request Telegram
Meaning of bits:
R/W: 0 = response, 1 = request
Meaning of Bits
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
Byte 1 Parity R/W Req. bit
4
Req. bit
3
Req. bit
2
Req. bit
1
Req. bit
0
A1 A0
Byte 2 Parity ~R/W ~Req.
bit 4
~Req.
bit 3
~Req.
bit 2
~Req.
bit 1
~Req.
bit 0
~A1 ~A0
8 7 6 5 4 3 2 1 0 <- Bit
PAR R/W R.4 R.3 R.2 R.1 R.0 A.1 A.0 Value Function
Parity 0 x x x x x x x Answer
Parity 1 x x x x x x x Request
Parity 1 x x x x x 0 0 Read head
addr. 0
Parity 1 x x x x x 0 1 Read head
addr. 1
Parity 1 x x x x x 1 0 Read head
addr. 2
Parity 1 x x x x x 1 1 Read head
addr. 3
Parity 1 0 0 0 0 0 x x 0x80 Status (is
alive)
Parity 1 0 0 0 0 1 x x 0x84 Result data
Parity 1 0 0 1 0 1 x x 0x94 Teach
Parity 1 0 1 0 1 0 x x 0xA8 Enable
Configuration
Mode
Parity 1 1 0 1 1 0 x x 0xD8 Generate a
software
trigger