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•
If any of the time element has not been updated, the time synch warning is turned
on and the time synch status in WHMI indicates “Bad”.
•
If the value written in a time element is out of the acceptable value range for the
corresponding time element, the particular time element’s value is not updated
and an exception code 4 is sent to the Modbus client.
•
If the Modbus master/client disconnects from RIO600, a time sync warning is
raised again in LECM and the time sync status in WHMI indicates “Bad”.
•
If Modbus time sync command has not been received from the Modbus master/
client for a minimum time period of half an hour, a time sync warning is raised
again in LECM and the time sync status in WHMI indicates “Bad”.
Table 121:
Time synchronization in RIO600
Modbus
address
(in decimal)
Attribute name
Information Scale factor Data type
More
information
(Valid range)
8
Time synchronisation
Year
1
Unsigned 16
2000...9999
9
Time synchronisation
Month
1
Unsigned 16
1...12
10
Time synchronisation
Day
1
Unsigned 16
1...31
11
Time synchronisation
Hour
1
Unsigned 16
0...23
12
Time synchronisation
Minute
1
Unsigned 16
0...59
13
Time synchronisation
Seconds
1
Unsigned 16
0...59
7.1.26
Parameter settings
Modbus communication needs to be enabled via the PCM600 path
Configuration/
Station communication/MODBUS
. The station communication parameters need to
be set to use Modbus communication in RIO600.
Table 122:
Station communication parameters for Modbus
Parameter name
Range
Unit
Default value Description
Modbus operation
ON/OFF
-
Off
Select “ON” to enable Modbus
communication with client.
Modbus connection
timeout
1...100
Sec
10
If there is no request from other client
within this timeout, RIO600 closes
the TCP connection.
TCP Client Modbus
operation
ON/OFF
-
Off
Select “ON” to enable Modbus
communication with the client.
Slave ID
1...254
-
-
Slave ID of RIO600
Client IP
-
-
000.000.000
.000
IP address of the Modbus client
Binary input read
method
Latched
-
Latched
Binary input signal information is
stored until a Modbus request
command is received.
-
Instantaneo
us
-
-
The current binary signal information
would be provided to the client upon
request.
Table continues on next page
1MRS757488 H
Section 7
Modbus TCP communication
RIO600
179
Installation and Commissioning Manual
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