Rockwell Automation 1203-GK5 DeviceNet Communications Module FRN 1.xxx-3.xxx - Manual (Page 98)

C-8 DeviceNet Objects (Class Code 0x07 — Register Object)
Class Code 0x07 — Register Object The Register Object is used to address individual bits or a range of
bits. It may operate as either a producer (input) register or a consumer
(output) register. A producer register object produces data onto the
network. A consumer register object consumes data from the
network.
Message writes to the Register Object can perform control functions.
Therefore, message writes are only allowed when the controller is not
actively controlling the module and the message write is done through
a connection with a time-out value not equal to zero. Writes cannot be
performed through an unconnected message. After a write, any
time-out or closure of the connection may cause the SCANport
product to fault.
Refer to Chapter 6, Using DeviceNet Explicit Messages, for
information about writing to the Register Object.
Class Attributes
Not supported.
Instances
Instance Description
1 All polled data being read from the SCANport device (read-only)
2 All polled data written to the SCANport device (read/write)
3 Logic Status and Feedback data (read-only)
4 Logic Command and Reference data (read/write)
5 Datalink A input data (read-only)
6 Datalink A output data (read/write)
7 Datalink B input data (read-only)
8 Datalink B output data (read/write)
9 Datalink C input data (read-only)
10 Datalink C output data (read/write)
11 Datalink D input data (read-only)
12 Datalink D output data (read/write)
13 Logic Status and Feedback Data (read-only)
14 Logic Command and Reference Data
➀
(read/write)
➀ The command word is set to the value of the first word of the data where there are ones
in the second word of the data. Command = (word 1 and not word 2) or (word 1 and
word 2). This only controls specified bits in the logic command data to the SCANport
product and does not change the reference value.