Rockwell Automation 855T DeviceNet Stack Light User Manual - Manual (Page 54)

B-5 DeviceNet Information
Publication 855T-UM001C-EN-P May 2005
Instance Attributes
➊ The MACID is set using two BCD rotary switches located on the module top. Valid MACID addresses are
0…63 (0…3F Hex). Setting the switch address to a value greater than 63 will disable the switch and allow
software setting of the MACID. The software setting defaults to 63.
➋ The Baud Rate is set using a BCD rotary switch located on the module top. Valid Baud Rate settings are 0, 1,
and 2; these correspond to 125 KB/s, 250 KB/s, and 500 KB/s respectively. Setting the switch address to a
value of 3 will disable the switch and allow autobauding.
➌ Bus Off Interrupt (BOI) determines the action if a Bus Off state is encountered.
➍ Bus Off Counter will be forced to 0 whenever set regardless of the data value provided.
➎ Allocation_byte
➏ Disable Autobaud
Table B.7
Attribute Access Name Type Value
1 Get/Set MACID USINT ➊
2 Get/Set Baud Rate USINT ➋
3 Get/Set Bus Off Interrupt BOOL ➌
4 Get/Set Bus Off Counter USINT ➍
5 Get Allocation Information
Choice Byte
Master’s Node
Addr
STRUCT of:
BYTE
USINT
➎
6 Get MAC ID Switch
Changed BOOL 0 = No Change
1 = Change since last Reset or
Power-Up
7 Get Baud Rate Switch
Changed BOOL 0 = No Change
1 = Change since last Reset or
Power-Up
8 Get MAC ID Switch Value USINT 0…99
0…63 Hardware Set
64…99 Software Configurable
9 Get Baud Rate Switch
Value USINT 0…9
0…2 Hardware Set
3…9 Software Configurable
100 (0x64) Get/Set Disable Autobaud BOOL ➏
BOI Action BOI Action
0 Hold chip in OFF state (default) 1 If possible reset CAN chip
bit 0 Explicit messaging bit 4 COS I/O
bit 1 Polled I/O bit 5 Cyclic I/O
bit 6 Acknowledge Suppression
0 Autobauding Enabled 1 Autobauding Disabled