ABB COM600 series 5.0, Technical Reference Manual

Page: 128 / 164

Description Value or Value range/ Default Name
Number of TCP connection
close requests TCP close
Modbus Device attributes 6.3.3.
Table 6.3.3-1 Modbus device attributes
Description Value or Value range/ Default Name
Data type: Integer
Access: No limitations
The operational status of the
device - in use or out of use.
Taking the device out of use
with this attribute stops all data
communication with the device.
All operations that would result
in data exchange are disabled.
The device itself is not affected
by the attribute, only the pro-
tocol stack’s image of the
device. Setting IU to 1 is
allowed only if the device
address is legal.
0 = Out of use
1 = In use
Default: 1
In use
Data type: Integer
Access: No limitations
Indicates the detailed informa-
tion about the station device
status. Writing to the OS attrib-
ute (OS = 1) of a device makes
the protocol stack to re-transmit
the last system message
caused by the device. Possible
"Stopped" and "Suspended"
messages cause old marking
of OPC items. By reading the
OS attribute, the status code of
the system message can be
read.
See the Status Codes manual
for detailed information.
1 = Re-transmit system mes-
sage
A status code, for example:
0 = OK (communication works
properly)
13801 = Device suspended
Object status
Data type: Boolean
Access: Read-only
Indicates the status of the
device connection.
True = Device connection OK
False = Device connection
suspended
Device connection status
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COM600 series 5.0
Master Protocols (Ethernet) and Applications Technical Refer-
ence Manual