Burkert Type 8644 - Manual (Page 56)

52 - 8644/phoenix
S
YSTEM
D
ESCRIPTION
Read Response (Slave Master)
Example 5
Error: Non-existent object read on an E/A module with PCP functionality (access to 5C00, sub-index 0 on a
IL RS232, Slot 3)
Write Request (Master Slave)
Write Response (Slave Master)
Read Request (Master Slave)
Read Response (Slave Master)
You can see that the write response merely indicates that the command has been received, as is
customary with PROFIDrive. Processing on the local bus is only launched subsequently. In the process it
becomes clear that no processing is possible, since the object does not exist. This is signalled by means of
error code 6-7 in the object data. 0x44 is already initiating a basic error.
Since the run on DPV1 ran without problems, the error is not displayed as an error by DPV1, but as an
error in the subordinate local bus.
Example 6
Error: Object read on an E/A module without PCP functionality (access to 5FF0, Sub-index 0 to a DO8,
Slot 2)
Write Request (Master Slave)
Write Response (Slave Master)
Read Request (Master Slave)
Read Response (Slave Master)
Data Configuration of the data
5E 04 30 02 82 00 Read/Slot/Index/Actual length/2 Byte Data (PCP acknowledgement)
Data Configuration of the data
5F 03 30 04 01 5C 00 00 Write/Slot/Index/Length/Read-PCP/Index High/Index Low/Sub-index
Data Configuration of the data
5F 03 30 04 Write/Slot/Index/Length
Data Configuration of the data
5E 03 30 06 81 44 06 07 00 00 Read/Slot/Index/Actual length/6 Byte Object data
Data Configuration of the data
5E 03 30 28 Read/Slot/Index/max. Length
Data Configuration of the data
5F 02 30 04 01 5f ff 00 Write/Slot/Index/Length/Read-PCP/Index High/Index Low/Sub-index
Data Configuration of the data
5F 02 30 04 01 5f ff 00 Write/Slot/Index/Length/Read-PCP/Index High/Index Low/Sub-index
Data Configuration of the data
5E 02 30 28 Read/Slot/Index/max. Length
Data Configuration of the data
DE 80 D4 00 Read-Error/ Error-Decode/Error-Code 1/Error-Code 2