exception code informing the master of the nature of the error. The error code
is formed by setting the MSB of the function code to 1 (i.e. function code plus
with 0x80, like 0x83, 0x86, 0x90, 0x97), then the exception response has a for-
mat shown below.
Slave No. Error code Exception code CRC16
Lo | Hi
Exception codes for EFC 3600 frequency converters:
● 1=Parameter cannot be modify owing to user password locked
● 2=The function requested is not recognized by the slave, i.e. not equal to 3, 6,
8, 16 or 23
● 3=The word address indicated in the request do not exist in the slave
● 4=The word values indicated in the request are not permissible in the slave
● 5=Parameters cannot be modify in run mode
● 6=Parameters are read-only that cannot be modified
● 7=Invalid operation which is decided by the function of frequency converter
(*)
● 9=EEPROM read/write error
● B=Function code 3, read range exceeds 16
●
(*)
includes situations listed below:
– Write operations on b0.06 parameter replication, b0.30 running
monitoring display, b0.31 stop monitoring display and S2.15
physical data calculation, are prohibited.
– Write operations on b0.00 user password, b0.01 manufacture
password and b0.05 parameter initialization only support Func-
tion 6.
– Multi-function digital input terminals (E0.01 ~ E0.05) writing
operation do not permit repeated nonzero value.
Bosch Rexroth AG
Communication Protocols
EFC 3600
194/259
DOK-RCON03-EFC-3600***-IT03-EN-P
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