Standard Features
The Micro-Tech has many hardware and software features. The standard
features of the Micro-Tech are listed below.
Menu-driven scroll entries on a four line display.
Four LED status indicators.
Audit trail.
Automatic zero and span calibration.
Auto zero tracking. (Where applicable)
Several software options that may be turned on by keypad entry or
by installing optional plug-in PC boards.
Optically coupled digital inputs and outputs.
Alarms and failure detection.
Communication standards such as RS232C, RS485, and networking multi-drop.
Allen-Bradley DF1 and Modbus RTU.
Ethernet/IP and Modbus/TCP
Inputs and Outputs
The standard Micro-Tech configuration is as follows. For more
information about the Micro specific model reference manual -Tech's communication protocols, see . the
USB port.
Two serial communication ports.
Two digital inputs on the Motherboard.
One DC output from the mother board (J29).
Ethernet TCP/IP.
Four circuit board expansion slots that can accommodate the
following boards, if needed.
Three programmable digital inputs on plug-in card.
Four programmable digital outputs on a plug-in card.
Single channel current output board
Dual channel current output, analog input board (2 analog in and
2 analog out)
8 digital inputs/8 digital outputs board
Serial communication board
Profibus-DP boar
Micro-Tech Menus and Functions
Each capable of performing all of the necessary measuring functions. All of Micro-Tech has been designed for a specific application and is
the required functions are resident in the software of the microprocessor.
Optional functions are automatically turned on when the relevant
hardware is installed, or after the operator has selected them through the
keypad. Setup of the Micro-Tech is easy and is performed from the
keypad on the front of the device. The setup parameters may be divided
into the following main groups.
Menu 1: Calibration
Menu 2: Set-up
Menus 3-6: Options set-up
Monitoring Functions
The Integrator includes internal diagnostics that generate alarms in case
of hardware failures or programming errors.
Alarms are visible on the display and can be acknowledged and reset
through keyboard, digital input or serial line. Alarms can be delayed to
avoid intervention in case of short time peaks. You can program each
individual alarm to operate as a simple alarm, a shut down function, or
the alarm can be ignored. Two LED's indicate the cumulative status of
alarms and shut-down. Digital outputs are also provided for the
following:
Hardware failure
Alarm cumulative
Shut down cumulative
Print Functions
Timed or command prints can be obtained by connecting a serial printer
to the Comm output on the motherboard, or an optional communication
board. Data may also be downloaded to a USB memory device. Time
and date are permanently stored in the battery-backed memory. The
integrator Set-Up, Totals, Zero results, and Audit Trail of the instrument
can be printed.
Functions
There are two communication ports on the Motherboard. Comm A is
RS232C/RS-485 (jumper selectable), isolated. Comm B is RS-485 only,
non-isolated. One additional communication board may be installed. For
detailed descriptions of communication protocols, see the specific model
reference manual.
There are three types of standard communication functions, as described
below.
Serial Communications
The communication protocol allows a remote intelligent device to
read the contents of the registers and write to some registers. During
the communication activity, the Micro-Tech always acts as a Slave,
meaning it responds to a request from a Master device on the line,
but never attempts to send messages out. One electrical interface
may be selected and accessed through one communication port.
Field Bus I/O
Profibus-DP I/O communication protocol board is typically used to
transfer I/O images between a main PLC and the remote devices
(normally remote I/O racks-rack adapters) or to transfer (read and
write blocks of data with intelligent remote devices (node adapters),
the Micro-Tech in this case. The Remote I/O is a typical
master/slave communication where the main PLC is the master or
scanner and the remote devices are slaves or adapters.
Ethernet Port
The Micro-Tech has a built-in Ethernet port. Communications
protocols Ethernet/IP and Modbus/TCP can be used. The Micro
Tech is a Slave device only, and cannot initiate messages.
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