Lenze ELCAMZIxxx4SNNPSNN (LCU122) - Manual (Page 55)

PROFIsafe on board
Parameter data transfer
DRIVECOM parameter data channel (DP-V0, cyclic)
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55 EDSLCMX3024-SPS EN 5.0
Byte 1: service
Job and response control for the parameter data channel
Job
Job for the motor starter. The bits are only set by the master.
z 000 = no job
z 001 = read job (reading data from the motor starter)
z 010 = write job (writing data to the motor starter)
Data length
Data length in bytes 5...8 (data 1...4 / error 1...4)
z 00 = 1 byte
z 01 = 2 bytes
z
10 = 3 bytes
z 11 = 4 bytes
Handshake
Indicates a new job. The master changes this bit for every new job. The motor
starter copies the bit to its response telegram.
Status
Status information from the motor starter to the master when sending the job
confirmation. This bit informs the master whether the job has been carried out
without errors.
z
0 = job completed without fault.
z 1 = job not completed. A fault has occurred. The data in the Data/Error field
is interpreted as an error message.
M T S R Q P O N Representation of bits 7 ... 0 in byte 1
M O N
P
(Reserved)
R Q
S
T
Fig.6-1 Byte 1: job and response control
Bit 7 0
M u N N M M N M
“2” (write)
(reserved)
Handshake
Status, relevant for response telegram only
Bit 7 0
M u N N M M M N
“1” (read)
(reserved)
“3”(= data length 4 bytes)
Handshake
Status, relevant for response telegram only
“3”(= data length 4 bytes)
Fig.6-2 Example of byte 1