Rockwell Automation 2711-K9A10_K9C10_T9A10_T9C10 DeviceNet Communications User Guide - Manual (Page 19)

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Publication 2711-6.0.4
Bit Offset
(Explicit-Client
Message only) The offset index into
the returned data.
Typically 0. Bit Offset is limited to the number of bytes speci-
fied for the Packet Bytes. For example, if Packet
Bytes is 2, the Bit Offset must be 0 - 15. Refer to
Appendix A.
Class
(Explicit-Client
Message only) Class of the object
being addressed Load information from the electronic data sheet
(EDS) automatically, if possible, or refer to the tar-
get devices user documentation.
Instance
(Explicit-Client
Message only) Instance of the
object being
addressed Load this information from the electronic data
sheet (EDS), if possible, or refer to the target
devices user documentation.
Attribute
(Explicit-Client
Message only) Attribute of the
object being
addressed. Load this information from the electronic data
sheet (EDS), if possible, or refer to the target
devices user documentation.
Array Size Size of the array • character arrays are 1- 128
characters
• bit arrays are 1 - 16 bits
• array size must be an integer
• do not use blanks, tabs, carriage returns, non-
printable characters
Description Description of tag • maximum characters =255 • type information in this field or use the
description editor
Address
(I/O Slave and
Explicit-Server
Messages only) Data sent to and
from remote device.
A remote address
has the following
format:
I:<word> / <bit>
O: <word> / <bit> • maximum characters = 32
• I specifies input data
generated by PanelView and
sent to a remote device.
• O specifies output data
received by PanelView from
a remote device.
Do not use blanks, tabs, carriage returns, non-
printable characters.
Initial Value Starting value for
the current tag in
engineering units
(only for write tags) • maximum characters = 24
• 0 -9
• e, E, +, - and period
• if Data Type is bit, enter 0 or
1
• do not use blanks, tabs, carriage returns, non-
printable characters
• maximum precision is 6 places to the right of
the decimal for non-floating point values
• if present, a sign (+ or -) for the number must
be first (+ is the default)
• if present, a sign for the exponent must
immediately follow the e or E
• provides a preset value for numeric entry
objects only
• no entry = default of 0
Scaling
Scale:
‘m’ in y = mx + b
Offset:
‘b’ in y = mx + b
The values you use
to convert the cur-
rent tag’s proces-
sor integer value
(‘x’) to engineering
units (‘y’) • maximum characters = 12
• 0-9
• e, E, +, - and period • do not use blanks, tabs, carriage returns, non-
printable characters
• maximum precision is 6 places to the right of
the decimal
• maximum precision for offset is 6 places to the
right of decimal
• if present, a sign (+ or -) for the number must
be first (+ is the default)
• if present, a sign for the exponent must
immediately follow the e or E
Data Entry Limits
Minimum
Maximum The minimum and
maximum values
that can be
assigned to the tag • maximum characters = 12
• 0-9
• e, E, +, -, period • do not use blanks, tabs, carriage returns, non-
printable characters
• maximum precision is 6 places to the right of
the decimal
• if present, a sign (+ or -) for the number must
be first (+ is the default)
• if present, a sign for the exponent must
immediately follow the e or E
Field Description Valid Characters Notes