WEG CFW-09 - Characters Format; Parameters;Variables Resolution; Protocol

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CHAPTER 8 - CFW-09 OPTIONS AND ACCESSORIES
SCHEMATIC DIAGRAM:
INVERTER
BASIC
VARIABLES
PARAMETERS
MASTER
SERIALCONECTION
VARIABLES
8.13.3.2
Parameters/Variables
Resolution
Duringthe parameter reading/changing the decimal point is disregardedin the
valuesreceivedwiththetelegram,exceptingtheBasicVariablesV04(Reference
via Serial) and V08 Motor Speed) that are standardized in 13 bits (0 to 8191).
For instance:
Writing: if the purpose is to change the content of P100 to 10.0 s, you
must send 100 (disregarding the decimal point);
Reading: If we read 1387 in P409, the value is 1.387 (the decimal point
is disregarded);
Writing: to change the content of V04 to 900 rpm, we must send:
Supposing P208 = 1800 rpm
Reading: If we read 1242 in
V
08, this value is given by:
Supposing P208 = 1800 rpm
1 start bit;
8 information bits [theycodifytext characters and transmissioncharacters,
removed from the 7 bits code, according to ISO 646 and complemented
for even parity (eighth bit)];
1 stop bit.
After the start bit, follows the less significant bit:
V
04 = 900 x
8191
= 4096
P208
8.13.3.3
Characters
Format
START
B1
B2
B3
B4
B5
B6
B7
B8
STOP
Start
bit
Stop
bit
8 bits of information
V
08 = 1242 x
P208
= 273 rpm
8191
8.13.3.4 Protocol
The transmission protocol meets Standard ISO 1745 for data transmission in
code. Only text characters sequences without header are used.
The errors monitoring is madethrough transmission related to the parity of the
individual 7 bit characters, according to ISO 646. The parity monitoring is
made according to DIN 66219 (evenparity).
The master uses two types of messages: