WEG CFW-09 - Errors Related to the Serial Communication; Times for Read;Write of Telegrams

312
CHAPTER 8 - CFW-09 OPTIONS AND ACCESSORIES
They act as follows:
They do not disable the inverter;
They do not disable defective relays;
They are informed in the word the logical status.
Fault Types
-E22:
longitudinal parity fault;
-E24:
parameterization fault (when some situation occurs as indicated in
table 4.2. (parameter incompatibility), - chapter 4 - Keypad (HMI)
Operation,or when there is a parameterchange attempt that cannot
be changed with running motor;
-E25: variable or parameter not existing;
-E26: expected value out of the allowed limits;
-E27: writing attempt in a read only variable or logical control disabled;
-
E28:
Serial communication is inactive. If the time programmed at P314
has elapsed without the inverter receiving a valid Modbus telegram,
this is displayed by the HMI and the inverter adopts the action
programmedatP313.
NOTE!
If a parity fault is detected during inverter data reception, the telegram will be
ignored.
The same happens when syntax errors occur.
Ex.:
- Code values different from the numbers 0 to 9;
- Separation character different from “ =”, etc.
8.13.5.4
Errors Related to the
Serial Communication
8.13.6
Times for Read/Write
of Telegrams
MASTER
Tx: (data)
RSND (request to send)
INVERTER
TxD: (data)
t
proc
t
di
t
txi
Time (ms)
T
proc
T
di
T
t
xi
reading
writing
Typical
10
5
15
3