Reference
15
T
total
= T
EIPcyc
+
(PLC’s EIP master cycle time)
T
EIPdelay
+
(E/IP transmission and processing delay)
3*T
PDPcyc
+
(Profibus delay until outputs are valid inside slave + readback cycle)
T
EIPcyc
+
(E/IP delay for missed cycle)
T
EIPdelay
(E/IP transmission and processing delay)
T
total (worst case)
< approx 2*T
EIPcyc
+ 3*T
PDPcyc
The best case would be:
T
total
= 0 +
(PLC’s EIP master immediate update)
T
EIPdelay
+
(E/IP transmission and processing delay)
2*T
PDPcyc
+
(Profibus outputs cycle + readback cycle)
T
EIPdelay
(E/IP transmission and processing delay)
T
total (best case)
>= approx 2*T
PDPcyc
With T
PDPcyc
of approx. 20ms and an Ethernet/IP RIP of 20ms this results in (with estimated additional
delays of approx. 5ms):
45ms <= T
total
<= 105ms
4.2
EtherNet/IP CIP Object Classes
4.2.1
Identity Object Class (Class code 0x01)
The identity object provides the following attributes:
Attribute
ID
Access
Name
Data type
Value
1
Get
Vendor ID
UINT
BECK (953)
2
Get
Product/Device Type
UINT
12 (comm)
3
Get
Product Code
UINT
1001
4
Get
Revision: Structure of
Major
Minor
BYTE
BYTE
1
3
5
Get
Device Status
WORD
6
Get
Serial number
UDINT
7
Get
Product Name: Structure of
Product name size
Product name string
USINT
USING[26]
8
“BG02-EIP”
8
Get
State
USINT
Notes:
-
Product code: The Product Code is fixed at 1001 for the BG02-EIP. The product code is used
within the Electronic Data Sheet format to uniquely identify the product type.
-
Revision Information: The major revision number will increment as functional enhancements
are implemented, the minor firmware revision control number is incremented for each minor
changes.
