Owner`s manual

M SERIES DAC
BASE UNIT AND MODULE OPERATION
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The port select code is sent as part of a select sequence by the host terminal to a V71
in order to select specific I/O modules or the main board of the M Series model to
issue configuration or data commands. The port select code is a programmable
ASCII character string that can range from 1 to 8 characters.
The default port select code is $BT.
V71 SERIAL PORT CONFIGURATION
The V71 translates data for devices using different serial configurations. You can set
the baud rate, word size, stop bits, parity and XON/XOFF handshaking for each
individual port. In addition, you can select the line interface for the V71.
The factory default serial port configuration is 9600 baud rate, 8 bit word size, 1 stop
bit, no parity, XON/XOFF handshaking disabled, and EIA-232 line interface.
V71 RESET COMMAND
The entire M-Series unit can be reset by issuing a reset command to the V71. The
reset command consists of the port select code ($BT - default) followed by "RESET"
<cr>. For example, if using the default port select code, send $BTRESET <cr> to the
V71 to reset the unit.
V71 TEST COMMAND
A host computer can verify communication with the V71 by sending the port select
code ($BT - default), followed by capital "T" and Carriage Return or Line Feed. The
V71 will respond with an "ACK" character (06 Hex). For example, if using the
default port select code, send $BTT<cr> and the V71 will respond with "ACK" if
there is communications between the host terminal and the V71.
V71 BASIC OPERATION
Once the host computer has been cabled to the V71 and the V71 configured for the
desired parameters, the host computer is ready to perform data acquisition and control
functions with the various I/O modules. Among the functions you can perform are
configuration and data commands. Configuration commands are used to program the
features of the various I/O modules and the data commands are typically used to
request stored data received from an I/O module. Data commands are also used to
instruct certain I/O modules to perform a specific task (e.g., energize or de-energize a
relay).