Communication extension card
-47-
header type
type identifier user
data
counter state
state
2 bytes
2
bytes
2 bytes
2 bytes
36
–
1440
bytes
2 bytes
1
byte
1 byte
4
bytes
0x8100
0x8892
VLAN flag
APDU state
Data header
7-byte
preamble
1-byte synchronization
information
6-byte source
MAC address
6-byte destination
MAC address
describes the structure of the IRT frame (synchronous).
Table 4-4 Structure of an IRT frame
Data header
Ethernet
type
VLAN
Ethern
et type
Frame
identifi
er
IRT
user
data
FCS
7-byte
pream
ble
1-byte
synchro
nization
6-byte
source
MAC
address
6-byte
destina
tion
MAC
addres
s
2 bytes
2
bytes
2 bytes 2 bytes
36
–
1440
bytes
4
bytes
4.4.2
PROFINET I/O communication
The PROFINET communication card supports 16-word input/output.
shows the packet format for
transmitting data with a VFD.
Parameter
identification (PKW)
Process data
(PZD)
Distributable zone
PKW1
PKW2
PKW3
PKW4
CW
SW
PZD2
PZD3
PZD2
PZD3
PZD12
PZD12
Fixed
zone
Figure 4-4 Packet structure
By using the 32 inputs/outputs, you can set the reference parameters of the VFD, monitor the state values,
transmit control commands, monitor the running state, and read/write the function parameters of the VFD.
For specific operations, see the following description.
Parameter zone:
PKW1
––
Parameter identification