9300 Servo PLC
Connection
3-43
9300ServoPLC EN 1.4
3.4.5 Parameterization
Two separate software channels are available for parameterization, which are defined by the
controller address.
The structure of the telegram for parameterization is as follows:
11-bit identifier 8-byte user data
Command
Code
Index
Low-byte
Sub-
index
Data 1
Index
High-byte
Data 2 Data 3 Data 4
Abb. 3-16 Structure of the telegram for parameterization
Command code:
In the command code, the services must be entered, or services are entered such as transmitting or
writing a parameter, and how long these data are.
Structure of the command code:
Bit 7 (MSB) Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
Command Specifier (cs) 0 Length e s
cs Length e s
Write Request 0 0 1 0 x x 1 1
Write Response 0 1 1 0 x x 0 0
Read Request 0 1 0 0 x x 0 0
Read Response 0 1 0 0 x x 1 1
Error Response 1 0 0 0 0 0 0 0
The length of the user data for these services are coded in Bit 2 and Bit 3 as follows:
• 00 = 4-byte
• 01 = 3-byte
• 10 = 2-byte
• 11 = 1-byte
The most frequent parameters are data with 4 bytes (32-bit) and 2 bytes (16-bit) data length.
So the following values result in the command code for these parameters:
Services 4-byte (32-bit) data 2-byte (16-bit) data Meaning
hex dec hex dec
Write Request 23
hex
35 2B
hex
43 Transmit parameter to drive
Write Response 60
hex
96 60
hex
64 Reponse of the drive controller to the write request (acknowledge-
ment)
Read Request 40
hex
64 40
hex
64 Request toread a parameter from the drive controller
Read Response 43
hex
67 4B
hex
75 Response to the read request with the actual value
Error Response 80
hex
128 80
hex
128 The drive controller reports a communication error
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