Eaton OPTE9, Руководство по установке, Страница: 27 / 90

23
7. Modbus TCP
Dual port ethernet option board installation manual
MN032004EN October 2017 www.eaton.com
Table 31. Resettable energy counter
Holding
register
address
Input
register
address Purpose Description
40301 301 Energy Amount of energy taken from a
supply network.
40302 302 Format The last number of the Format
field indicates the decimal
point place in the Energy field.
Example:
40 = 4 number of digits, 0
fractional digits
41 = 4 number of digits, 1
fractional digit
42 = 4 number of digits, 2
fractional digits
40303 303 Unit
1 = kWh
2 = MWh
3 = GWh
4 = TWh
Unit of the value.
7.1.3.5.9. Fault history
The fault history can be viewed by reading from address
40401 onward. The faults are listed in chronological order so
that the latest fault is mentioned first and the oldest last.
The fault history can contain 29 faults at the same time.
otee: N
Reading the fault history items is slow. Reading all
30 items at once might take up to three seconds.
The fault history contents are represented as follows:
Table 32. Fault history
Holding
register
address
Input
register
address Purpose
40401 401 Upper byte is a fault code, lower byte is a sub code
40402 402
40403 403
... ...
40429 429
7.1.3.5.10. Fault history with 16-bit error codes
The fault history can be viewed by reading from address
40511 onward. The faults are listed in a chronological order
so that the latest fault is mentioned first and the oldest last.
These addresses contain the fault code and the subcode for
the fault. Reading can be started from any address.
otee: N Reading the fault history items is slow. Reading all
30 items at once might take up to three seconds.
Table 33. Fault history with 16-bit error codes
Holding
register
address Purpose Description
40511 Fault code 1 16-bit fault code in index 1.
40512 Sub code 1 16-bit sub code for the fault in index 1.
40513 Fault code 2 16-bit fault code in index 2.
40514 Sub code 2 16-bit sub code for the fault in index 2.
... ...
40567 Fault code 29
40568 Sub code 29
7.1.3.5.11. Modbus communication and connection timeout
It is possible to open up to three connections to the OPTE9
option board. One of the connections could be used for
process data and other just for reading monitoring data.
In most cases it is desirable that if “monitor” connection
gets disconnected, no fault is generated but when the
connection is handling the process data, a fault should be
generated in the time specified.
This register address enables the user to give custom
communication timeout for each connection. If a custom
timeout value is used, it must be given every time a
connection is opened. Timeout can be set only to the
connection which is been used to access this register. By
default the connection uses the communication timeout
value given via panel parameters.
If the cable is disconnected, a fieldbus fault is activated
after the timeout period. When communication timeout is
zero, no fault is activated.
Table 34. Communication timeout register
Holding
register
address Purpose Description
40501 Communication
timeout
Connection timeout value for this connection
in seconds.
Figure 26. The Modbus TCP function in case of timeout
Communicating
Received packet during
communication
timout time?
Timeout
Check Yes
Yes
Closed
Yes
No
No
No
Broken
Communication timeout zero?
Connection closed or broken?
FAULT! No fault
Has second connection with
communication timeout
other than zero?