Devicenet, 14 appendix, 2 explicit messages – Lenze EMF2175IB User Manual
Page 140
DeviceNet
14
Appendix
14-20
L
BA2175 EN 2.0
14.2.2
Explicit messages
“ Explicit Messages” can transfer parameter data between controllers and the SLC-CPU via the
DeviceNet parameter channel.
Data between the “ SLC5/04-CPU” , DeviceNet scanner “ 1747” and the DeviceNet device is
transferred via “ module files” :
Module file DeviceNet data direction
Data path
•
M0
Output data
from the CPU to the DeviceNet node via a scanner
•
M1
Input data
from the DeviceNet node to the CPU via a scanner
The CPU writes or reads module file data by means of copy commands from the scanner. The data
are organized by the CPU memory of the processary. Further data processing then uses the data
from the processor memory.
Addressing:
DeviceNet data direction
Module file
Scanner rack position
Data length in words (max. 224 words)
Output data
M0
1
224
Input data
M1
1.
224
DeviceNet output data M0
Word
HIGH byte
LOW byte
Explanation
0
TXID
COMMAND
Data as hexadecimal values
1
PORT
SIZE
depending on scanner
•
TXID
Order number
2
SERVICE
MAC ID
depending on scanner
•
COMMAND
01 (execute block)
04 (clear response buffer)
3
CLASS
•
PORT
00, with SLC only 00
4
INSTANCE
•
SIZE
Data length in byte
5
ATTRIBUTE
•
SERVICE
0E (GET SINGLE ATTRIBUTE)
10 (SET SINGLE ATTRIBUTE)
6
L-Code
•
MAC ID
DeviceNet node address
7
L subcode
Parameter transfer data
•
User data
– CLASS = 0064
INSTANCE 0001
8
Value (Low word)
– INSTANCE = 0001
– ATTRIBUTE = 0001
– L code
9
Value (High word)
– L code
– L subcode
– Value
DeviceNet input data M1
Word
HIGH byte
LOW byte
Data content
Explanation
0
TXID
STATUS
Data as hexadecimal values
1
PORT
SIZE
depending on scanner
•
TXID
Order number
2
SERVICE
MAC ID
depending on scanner
•
STATUS
(excerpt)
01 (transaction successful)
03 (slave not in scan list)
3
L code
•
PORT
00, with SLC only 00
4
L subcode
•
SIZE
Data length in byte
5
Value (LOW word)
•
SERVICE
6
Value (HIGH word)
Parameter transfer data
•
MAC ID
DeviceNet node address
10
Parameter transfer data
•
User data
– CLASS = 0064
– INSTANCE = 0001
– ATTRIBUTE = 0001
– ATTRIBUTE = 0001
– L code
– L subcode
– Value
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