Programming examples
64
FTC470XDP_D00111_00_M_XXEN/02.2015
7.4 Temporary Master takeover and return
Certain commands in a BMS network can only be carried out when the FTC470XDP takes over the
Master function. This is required for the parameterization of BMS devices, for example.
When BMS address 1 is continuously assigned to the FTC470XDP , taking over of the Master function
is not necessary.
7.4.1
Taking over the Master function
BMS address 3 is to be assigned to the protocol converter FTC470XDP.
The PROFIBUS Master sends an appropriate command FTC470XDP.
PROFIBUS Master output data:
FTC470XDP acknowledges the temporary change to Master mode.
PROFIBUS Master input data:
7.4.2
Returning the Master function
The PROFIBUS Master sends an appropriate command FTC470XDP.
PROFIBUS Master output data:
FTC470XDP acknowledges the change to Slave mode.
PROFIBUS Master input data:
The FTC470XDP must take over the Master function in case of parameter re-
quests and new parameter settings!
Take into account that the Master function must be returned by the FTC470XDP
after taking over the Master function and the subsequent parameterization.
Byte 1
Byte 2
Byte 3
Byte 4
Byte 5
Byte 6
Byte 7
Byte 8
Consecutive
PROFIBUS ID
No.
always
"0"
BMS address of
the addressed
device
BMS channel
number
BMS
Com-
mand
BMS data
type
High byte
BMS data
value
Low byte
BMS data
value
30
0
3
0
112
2
0
0
Byte 1
Byte 2
Byte 3
Byte 4
Byte 5
Byte 6
Byte 7
Byte 8
30
0
3
0
112
2
0
0
Byte 1
Byte 2
Byte 3
Byte 4
Byte 5
Byte 6
Byte 7
Byte 8
Consecutive
PROFIBUS ID
No.
always
"0"
BMS address of
the addressed
device
BMS channel
number
BMS
Com-
mand
BMS data
type
High byte
BMS data
value
Low byte
BMS data
value
40
0
3
0
112
101
0
0
Byte 1
Byte 2
Byte 3
Byte 4
Byte 5
Byte 6
Byte 7
Byte 8
40
0
3
0
112
101
0
0
