Modbus Device Attributes - ABB COM600 series 5.0 Technical Reference Manual

6.3.3.
128
COM600 series 5.0
Master Protocols (Ethernet) and Applications Technical Refer-
ence Manual
Name
TCP close

Modbus Device attributes

Table 6.3.3-1 Modbus device attributes
Name
In use
Object status
Device connection status
Value or Value range/ Default
Value or Value range/ Default
0 = Out of use
1 = In use
Default: 1
1 = Re-transmit system mes-
sage
A status code, for example:
0 = OK (communication works
properly)
13801 = Device suspended
True = Device connection OK
False = Device connection
suspended
1MRS758690
Description
Number of TCP connection
close requests
Description
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.
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.
Data type: Boolean
Access: Read-only
Indicates the status of the
device connection.