Intelligent Technologies (
IT.
) D77B-DSNAP
Pub. No. MN05004001E
17
September 2002
Default Output Assembly
The out of box output assembly (data mapped to the output registers within the system
controller) is the following:
Table 15: Output Assembly for S751 Soft Start
Safe State Behavior
The safe state behavior of the D77B-DSNAP is factory set to Fault and Stop. Refer to Page 35,
Table 33 Control Supervisor Object (0x29) Instance 0x01 (16 Dec.) for more information. Safe
State is defined as the state in which the D77B-DSNAP will place the motor controller when a
communication loss is detected. The D77B-DSNAP will be in a safe state when the unit is
powered but does not have a valid I/O connection established.
WARNING
If the Safe State value is set to Run1 or Run2, any time the D77B-
DSNAP is powered and does not have a valid I/O connection, the
motor controller will be commanded to the Safe State value. This
includes first powering up the DeviceNet system (D77B-DSNAP)
and not having the controller on-line.
Input and Output Assemblies
An I/O assembly is an ordered collection of data that the system controller exchanges with
the D77B-DSNAP for monitoring and control. The input assembly is the data that is sent from
the D77B-DSNAP to the system controller for monitoring of the D77B-DSNAP. The output
assembly is the data that is sent from the system controller to the D77B-DSNAP for control of
the D77B-DSNAP.
The D77B-DSNAP offers a variety of input and output assemblies, as indicated in the following
table. The tables in this part of the section provide data definitions and details on these
assemblies.
Table 16: Allowable DeviceNet I/O Assemblies
* Indicates the default
Use a DeviceNet configuration tool to select the assemblies of the D77B-DSNAP. The CH
Studio configuration tool provides the means to configure the assemblies quickly and easily,
as described in the “Configuration” section of this manual. When using a generic DeviceNet
tool, use the tables within this section to set up the assemblies. An EDS is available on Eaton’s
Cutler-Hammer Web site (www.cutler-hammer.eaton.com/it).
Refer to Appendix A on Page 39 for all input and output assembly information.
Instance 5: Extended Motor Starter
Byte
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
0
Reserved
Reserved
Reserved
Reserved
Reserved
FaultReset Run2
Run1
Motor Controller
Allowable Input
Assemblies
Allowable Output
Assemblies
Non-reversing (E101, N101)
52, 53, 102, 105*, 108, 114
3*
Reversing (E501, N501)
52, 53, 54, 102, 103, 105, 106*, 108, 109, 114
5*
Soft Start (S751)
52, 53, 60, 102, 105*, 108, 114
3*