Lenze ELCAMZIxxx4SNNPSNN (LCU122) - Manual (Page 59)

PROFIsafe on board
Parameter data transfer
DRIVECOM parameter data channel (DP-V0, cyclic)
6

59 EDSLCMX3024-SPS EN 5.0
Example: read parameter
The housing temperature (assumption: ϑ= 43° C)of the motor starter is to be read (C0061).
ƒ Byte 1: job
Bit 7 0
M u N N M M M N
“1” (read)
(reserved)
“3”(= data length 4 bytes)
Handshake
Status, only relevant for response telegram
ƒ Byte 2: subindex
Subindex = 0, as there is no subindex under code C0061.
ƒ Byte 3/4: index (calculation)
Index (of the read request) = 24575 - code no.
Index = 24575 - 61 = 24514 = 5F C2
hex
(5F
hex
= bigh byte, C2
hex
= low byte)
ƒ Byte 5 ...8: data (contained in the response telegram)
Data 1 to data 4 = 43° C x 10000 = 430000 = 00 06 8F B0
hex
Result:
ƒ Request telegram from master to the motor starter
Byte 1 Byte 2 Byte 3 Byte 4 Byte 5 Byte 6 Byte 7 Byte 8
Service Subindex Index
(high byte)
Index
(low byte)
Data 4 Data 3 Data 2 Data 1
01
hex
00
hex
5F
hex
C2
hex
00
hex
00
hex
00
hex
00
hex
00000001 bin 00000000bin 01011111 bin 11000010 bin 00000000bin 00000000bin 00000000bin 00000000bin
Wait for change of handshake bit (bit 6 here: 0 Æ 1) in the response
ƒ Response telegram from the motor starter to the master (for faultless execution)
Byte 1 Byte 2 Byte 3 Byte 4 Byte 5 Byte 6 Byte 7 Byte 8
Service Subindex Index
(high byte)
Index
(low byte)
Data 4 Data 3 Data 2 Data 1
30
hex
00
hex
5F
hex
C2
hex
00
hex
06
hex
8F
hex
B0
hex
0011 0000
bin
0000 0000
bin
0101 1111
bin
1100 0010
bin
0000 0000
bin
0000 0110
bin
1000 1111
bin
1011 0000
bin
Tab. 6-2 Telegram exchange in the parameter data channel