GE Multilin MM200, Руководство по связи

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CHAPTER 3: FIELDBUS INTERFACE DEVICENET PROTOCOL
MM200 MOTOR MANAGEMENT SYSTEM – COMMUNICATIONS GUIDE 3-47
Commands are actioned on a change in Output data.
The example diagram below shows the MM200 polled I/O data read/written using a
DeviceNet master simulator. In this example, the "Start A" command has been sent via
Output data. In reading the Input data and interpreting the first byte value (98h) based on
the data format for that byte (FC129) the following is true:
•
Auto control is enabled
• Contactor A is energized
• Drive Available is true
In the event that there is a communication fault, and a pre-fault polled output command
caused the MM200 to start a motor, the motor will continue to run even after the
communication fault.
Figure 3-10: DeviceNet polled I/O data
Identity Object (Class Code 01H)
Table 3-14: Identity Object, Class Code 01h, Services:
Table 3-15: Identity Object, Class Code 01h, Attributes:
Table 3-16: Identity Object, Class Code 01h, Instance 01h, Attributes:
Message Router (Class Code 02H)
The message router (class code 2) object provides a messaging connection point through
which a client may address a service to any object or instance residing in the physical
device. There is no external visible interface to the message router object.
CODE SERVICES AVAILABLE TO THIS OBJECT
NAME
DESCRIPTION
0x05 Reset Reset the device to power up configuration
0x0E Get_Attribute_Single Returns the contents of the given attribute
ATTRIBUTE ACCESS NAME/DESCRIPTION DATA TYPE VALUE
01h Get Revision of Identity Object UINT 1
ATTRIBUTE ACCESS NAME/DESCRIPTION DATA TYPE VALUE
01h Get Vendor ID UINT 928
02h Get Device Type UINT 12
03h Get Product Code UINT 0x4D47
04h Get Revision (Major, Minor) USINT 1.1