Introduction - ICP DAS USA tM-TH8 User Manual

1. Introduction

The tM series is a family of network data acquisition and
control modules, providing analog-to-digital, digital-to-
analog, digital input/output and other functions. The
modules can be remotely controlled using a set of
commands, which we call the DCON protocol, or the
standard Modbus protocol. Communication between the
module and the host is 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 tM series feature a new design for the frame ground
and INIT switch as shown in the figure. 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 features of the tM-TH8 module are as follows:
1. 24-bit sigma-delta ADC to provide excellent accuracy
2. Direct thermistor connection
3. Software calibration
The tM-TH8 is an 8-channel thermistor input module
Supported thermistor types are as follows:
tM-TH8 User Manual, Rev: A1.1 7MH-018-A11 5