Manual – DFD11B DeviceNet Fieldbus Interface
51
5
Programming samples in RSLogix 500 for SLC 500
Project Planning and Startup
The M files are divided into a request file (M0 file) and a response file (M1 file). Data
transmission takes place as shown in the following figure.
Register object class (7
hex
) must be used in order to read (instance 1 to 9) or write (in-
stance 2 and 3) parameters from the inverter via the SEW parameter data channel. The
data range is divided into the index (1 word) and the parameter data (2 words).
54175AEN
4
1
2
3
5
6
7
8
9
+/-
0
.
MOVIDRIVE
®
MDX61B
PLC
SLC500
Scanner 1747-SDN
Request of a
transmission
block
Contact plan scanning
Response of a
transmission
block
1.M0-File
4.M1-File
Scanner
request
waiting loop
Scanner
response
waiting loop
Process requests
and responses
Execute
Ready
or
Error
2. DeviceNet
Explicit Mess
age Reques
t
3. Device
Net Explicit Messag
e Respons
e
54177AEN
Class
Instance
Attribute
T
ransimission
header
Explicit Message Body
Word 224
TXID
cmd/status
Connection
Size
Service
MAC-ID
Index
Data word Low (HEX)
Data word High (HEX)
Word 225
Word 226
Word 227
Word 228
Word 229
Word 230
Word 231
Word 232
0
0
I