OPTO 22 BD-DEVNET, Руководство пользователя

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DEVICENET INFORMATION
3-6 BD-DEVNET User’s Guide
Table 3-12: Common Services
Service Implemented for: Service
Code Class Instance Name
0 E Yes Yes Get_Attribute_Single
10 N o Yes Set_Attribute_Single
4B N o Yes Allocate_Master/Slave
4C No Yes Release_Master/Slave
*Settable only if switch 7 and 8 are both in the ON position. Value returned will be switch 1..6 or last value set.
**Settable by switch 7 or 8 or through DeviceNet if switch 7 and 8 are both on.
Switch/Value Speed
0 125 kbits
1 250 kbits
2 500 kbits
3 undefined
***Bus Off Interrupt (BOI) determines action if Bus Off state encountered. Following values are supported:
BOI Action
0 Hold chip in OFF state (default)
1 If possible reset CAN chip
**** Bus Off Counter will be forced to zero whenever set, regardless of the data value provided.
***** Allocation_byte
bit 0 explicit set to 1 to allocate
bit 1 polled set to 1 to allocate
bit 2 strobed (not supported)
bit 3-7 reserved always 0
Table 3-11: DeviceNet Object, Instance 1 Attributes
Attr Access Name Ty p e Value
1 Get/Set MAC ID USINT *
2 Get/Set Baud Rat USINT **
3 Get/Set Bus Off Interrupt BOOL ***
4 Get/Set Bus Off Counter USINT ****
5 Get/Spc Allocation Info STRUCT of *****
Choice Byte BYTE
Master Node Addr. USINT