IFM Ecomat 300 AC1355, Supplementary Device Manual

Page: 79 / 248

DP module 12: Extended command channel
Data structure
9-3
9.2 Data structure
Length: 2...18-word consistent inputs/outputs (if not used: length = 0)
The word 2 is reserved for 7.4 commands (if not used: word = 0).
Request of DP master
Bit
Word
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
1
R R M user ID command number
2
R R A/B slave address R R R length
3…18
command data
Response from controllere (gateway)
Bit
Word
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
1
E B M reflected user ID reflected command number
2
TG L32 slave address F R R R length
3…18
command data
Legend
Name Description
A/B Bit for addressing A or B slaves
A/B=0: A slave (or standard slave)
A/B=1: B slave (addition of 20
hex
or 32
dec
to the slave address)
B Busy bit
B=0: command executed, response in the buffer is valid
B=1: command in process, channel is used
E Error bit
E=0: no error detected
E=1: error occurred during execution of the command
F Error bit
F=0: no error detected during command execution 7.4
F=1: error occurred during command execution 7.4
L32 Number of parameter bytes = 32
dec
L32=0: number of bytes to be sent < 32
dec
L32=1: number of bytes to be sent = 32
dec
Length 5 bits for the number of data bytes (0…16
dec
)
DP master: data bytes to be sent
controllere: data bytes received
M AS-i master bit
M=0: AS-i master 1
M=1: AS-i master 2
R reserved
Slave
address 5 bits for AS-i slave address (0…31
dec
)
(reflected by the controllere)
TG Toggle
Value changes for each command execution
User ID 5 bits for user ID (0…31
dec
)
(reflected by the controllere)