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6.3 Modes of operation
Profibus-DP devices allow operation using different communication
modes (see Figure below):
Set_Prm_FAIL
Chk_Cfg_FAIL
NOTE
All parameters -except for
mode.
is transmitted only in
Preset value
Types of communication
Transmission of data between Master and Slave is carried out using
the following types of messages:
DDLM_Set_Prm:
Used for configuring the slave. This communication mode is
active immediately after power is turned ON and used to send
parameters
DDLM_Set_Prm").
DDLM_Chk_Cfg:
Sets the number of bytes used for data transmission in
Data_Exchange
DDLM_Data_Exchange:
Used as "standard operation mode".
Used by Master to send the
transmit position and velocity values (see section "6.6
DDLM_Data_Exchange").
DDLM_Slave_Diag:
Used when power is turned on and whenever Master needs to
know diagnostic information from Slave device (see section "6.7
DDLM_Slave_Diag").
Set_Slave_Address:
Used to set a new node number via BUS (service SAP55, see
section "6.8 Set_Slave_Address (service SAP55)").
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Power-ON
Wait_Prm
Wait_Cfg
Data_Exchang
value- are transmitted in
Preset
Data_Exchange
from
Master
to
mode (see section "6.5 DDLM_Chk_Cfg").
Preset
AMT58x-PB Profibus®
Init_OK
Set_Prm_O
Chk_Cfg_O
mode.
Slave
(see
section
value; used by Slave to
Set_Prm
"6.4
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