Chengdu Ebyte Electronic Technology Co., Ltd.
Distributed IO Host (M31 Series) User Manual
Copyright © 2012 , Chengdu Ebyte Electronic Technology Co., Ltd.
35
Note: According to the usage requirements, some software (such as KingView) requires the register a1 to
operate the register.
Address negotiation
write register
protection
0X7584
Zone 4
1
This write-protected register
needs to be opened before
sending the address negotiation
command.
Writing 1: means turning on the
write-protected register
R:0x03
W: 0x06,0x10
address negotiation
register
0X7585
Zone 4
1
Write 1: On behalf of starting
address negotiation
R:0x03
W: 0x06,0x10
Current negotiation
status register
0X7586
Zone 4
1
Check whether the current
negotiation is completed,
0: The representative has not
yet completed the negotiation.
1: Representative negotiation
completed
R:0x03
Device exception
code
0X758 7
Zone 4
1
Check the exception code of the
current device. If it is 0, it
means there is no exception, 1
means the slave does not reply,
and 2 means the expansion
module sequence is wrong (this
error will directly cause the
device to not work properly )
R:0x03
Extension module
exception label
0X758 8
Zone 4
2
Check which expansion module
is currently unresponsive.
There are two 32-bit registers in
total, which represent the
expansion modules in
sequence. If the bit on the
corresponding serial number is
1, it means that there is an
exception in this expansion
module.
R:0x03
