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Reset HW
Power ON
always
HardRESET
HardRESET state
In the RESET state, the slave device is in a known position with the structures
initialised at known values and the outputs set to safe state.
The communication structures are reset and communication is not active (mes-
sages received are ignored).
Low level system start-up procedures are performed (e.g. PLL, MAC, etc.).
After completing all these procedures and thus after a certain length of time, the
SoftRESET state is automatically enabled.
SoftRESET state
In the SoftRESET state the slave device maintains the structures in their previ-
ous state. Only the Net_ID, Slave_ID, position and previous MAC address of the
master device are cancelled at this stage.
The outputs are set to safe and the slave device only sends messages if ques-
tioned.
All slave devices behave in the same way when in the SoftRESET state:
-
they do not check whether messages were sent by the master device (i.e. the
source MAC address is not checked)
-
they disregard outputs from the master device
-
they disregard their own inputs for database construction
This status is maintained until the slave is completely set, (including Net_ID and
Slave_ID). Then the status switches to "Prog".
PROG state
In PROG state programming can be completed by writing the other config files.
The address of the slave device must contain the NET_ID value and slave
number.
In PROG state the slave
-
activates the communication watchdog
-
the outputs are frozen in the previous state
-
checks the MAC address of incoming messages (except synchronisation)
Reset SW (complex command)
ID setting
(CONFIG01 writing)
SoftRESET
Reset SW
Serious fault
W.dog COM
FAIL
Reset SW
Go_Prog
Reset SW
Serious fault
W.dog COM
OPERATE
PROG
Go_Operate
complex
(
command)
EN- 20
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