SEW Movitrac B, Руководство по эксплуатации

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Operating Instructions – MOVITRAC® B
5
Communication and unit profile
Startup
Example: Parame-
terization error An incorrect index was entered when executing a read or write service.
Example: Reading
a parameter
(READ) A parameter is read via communication interfaces with a read request from the program-
mable controller of the MOVITRAC
®
B frequency inverter (see figure below).
If the read service cannot be executed in the frequency inverter, the programmable con-
troller will receive a
negative read response . In this way, the programmable controller
receives a negative acknowledgement (read error confirmation) with exact identification
of the error.
Code (hex) Meaning
Error class 0x08 Other
Error code 0x00 -
Add. code high 0x00 -
Add. code low 0x10 Illegal Index
5947128715
READ (8470)
OK + data from index 8470
Error + return code
CLIENT
SERVER
Read
request
Read
confirmation
Read error-
confirmation
O R
negative
read response
Read response
Read indication
2b. Error occured!
No data available
2a. Parameter index
8470 is read by the
inverter.
1. Read request (e.g. read ramp t11 to CW = index 8470)
3a. Read service delivers the data (e.g. 0.5 s)
3b. Read service error, more information in the return code
00
I