Lenze DDS System bus CAN for PLC Manual de usuario descargar pdf (Pagina 24)

System bus (CAN) for Lenze PLC devices

General information

2−12

PLC−Systembus EN 2.0

2.7.1.2 Command code

Identifier

Command

code

Index

Subindex Data 1 Data 2 Data 3 Data 4

Low byte High byte

Among other things, the command code contains the command to be carried out as well as

information on the parameter data length, and is structured as follows:

Bit 7 (MSB) Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0

Command Command Specifier (cs) Length e s

Write request 0 0 1 0

00 = 4 bytes

01 = 3 bytes

10 = 2 bytes

11 = 1 byte

1 1

Write response 0 1 1 0 0 0

Read request 0 1 0 0 0 0

Read response 0 1 0 0 1 1

Error Response 1 0 0 0 0 0 0 0

Command code for parameters with 1, 2, or 4 bytes data length:

4 byte data

(32 bit)

2 byte data

(16 bit)

1 byte data

(8 bit)

Command hex dec hex dec hex dec Information

Write Request 23 35 2B 43 2F 47 Send parameter to a node

Write Response 60 96 60 64 60 96 Node response to "write request" (acknowledgement)

Read Request 40 64 40 64 40 64 Request for reading a parameter of a node

Read Response 43 67 4B 75 4F 79 Response to the read request with an actual value

Error Response 80 128 80 128 80 128 Node reports an error with regard to communication

"Error Response" command

In the case of this error, an "Error Response" is generated by the node that is addressed.

· This telegram in data 4 always contains the value "6", and in data 3 an error code:

Error Response command code Data 3 Data 4 Error message

hex

Access denied

5 Incorrect subindex

6 Incorrect index

hex

Job was not edited

(for 8200 vector + FIF module)

1 2 ... 19 20 21 22 23 24 25 26 27 28 29 ... 177 178

Comentarios a estos manuales

Sin comentarios

Lenze DDS System bus CAN for PLC Manual de usuario Pagina 24

Comentarios a estos manuales

Relacionado con productos y manuales para Hardware Lenze DDS System bus CAN for PLC