ProSoft Technology MVI46-GSC - Manual (Page 56)

MVI46-GSC ♦ SLC Platform Reference
Generic Serial Communication Module
Page 56 of 78 ProSoft Technology, Inc.
December 5, 2007
Read-Write Devices
Read-write devices are those that both send and receive data. An example of
this type of device is a terminal. A terminal will send data entered on the
keyboard out its serial port and display any data received on its port on the
monitor. All data received from the terminal will be routed to the SLC processor
through the MVI46-GSC's M1 file. Data to be written to the terminal will be sent to
the module using the M0 file. The module will send new data in the M0 file out
the application port to the terminal. The example shipped with the module
(MVI46-GSC.RSS) can be interfaced with a terminal to echo back all characters
received. The data flow diagram for a read-write device is shown below: