Introduction - ICP DAS USA I-7021 User Manual

1. Introduction

The I-7000 series is a family of network data acquisition
and control modules, providing analog-to-digital, digital-
to-analog, digital input/output, timer/counter and other
functions. The modules can be remotely controlled using a
set of commands, which we call the DCON protocol.
Communication between the module and the host is in
ASCII format via an RS-485 bi-directional serial bus
standard. Baud Rates are software programmable and
transmission speeds of up to 115.2 Kbps can be selected.
The functionality of the M-7000 series is the same as the
I-7000 series, with the exception that the M-7000 series
offers extended support for the Modbus RTU protocol.
Some I-7000 modules feature
a new design for the frame
ground and INIT switch as
shown in the figure (rear
view). The frame ground
provides enhanced static
protection (ESD) abilities and
ensures the module is more
reliable. The INIT switch
allows easier access to INIT
mode. Please refer to Sections
A.1 and A.3 for more details.
The common features of the I-7021/21P, I-7022, I-7024,
I-7024R, M-7022, M-7024, M-7024L, M-7024R,
M-7024U and M-7028 modules are as follows:
6 I-7021/22/24, M-7022/24/28 User Manual, Rev: B2.3