Dcon Protocol - ICP DAS USA I-7021 User Manual

2. DCON Protocol

All communication with I-7000 modules consists of
commands generated by the host and responses
transmitted by the I-7000 modules. Each module has a
unique ID number that is used for addressing purposes and
is stored in non-volatile memory. The ID is 01 by default
and can be changed using a user command. All
commands to the modules contain the ID address,
meaning that only the addressed module will respond.
The only exception to this is command ~** (Section 2.34),
which are sent to all modules, but the modules do not
reply to the command.
Command Format:
Leading
Character
Response Format:
Leading
Character
CHKSUM
CR
48 I-7021/22/24, M-7022/24/28 User Manual, Rev: B2.3
Module
Command [CHKSUM] CR
Address
Module
Address
A 2-character checksum which is present
when the checksum setting is enabled. See
Sections 1.11 (Data Format Setting) and 2.1
for details.
End of command character, carriage return
(0x0D)
Data [CHKSUM] CR