Download CAN protocol manual (PDF-File) - esd electronics, Inc.

Commands and Parameters
If bit 1 has got the value '1', the module is in condition 'suspended'. In normal operating
mode (continue) bit 1 has got the value '0'.
Error on CAN (bit 2)
This bit is always ‘0’ at the CAN-CBM-SIO module.
I²C error (bit 3)
This bit is always ‘0’ at the CAN-CBM-SIO module.
EEPROM size (bit 4)
If bit 4 has got the value '1', the module has got an EEPROM whose memory capacity is
bigger than 128 bytes. An EEPROM of this size is prerequisite for the allocation of pin
names for each individual connection pin, because the names are filed in the EEPROM (see
also chapter 'Allocation of Pin Names').
I²C busy (bit 5)
This bit is always ‘0’ at the CAN-CBM-SIO module.
Default wake up (bit 6)
If the bit 'default start' has the value '1', the module 'awoke' with the default parameters after
the last RESET.
New on bus (bit 7)
The bit 'new on bus' can be evaluated by the CAN master to recognize if it already found
this module after the last RESET or if the module is new on the bus. The bit is set to the
value '1' after each RESET which corresponds to condition 'new on bus'. The master can
reset the bit to show that it found the module. Apart from 'error on CAN' it is the only bit of
this byte which can be reset.
esd Protocol for CAN Modules Rev. 3.2 3 - 17