Introduction; General - Mitsubishi Melsec A User Manual

1, lNTRoDucTloN
/MELSE
1. INTRODUCTION
1.1 General
The AD51E Intelligent Communication Unit has t w o RS-232C and
t w o RS-422 interfaces and allows multitask processing o f BASIC
programs.
User application programs running i n the AD51 E allow the following
functions:
(1) Supervision o f PC operating conditions
Allows graphical monitoring of the PC operating conditions on
a CRT.
(2) Data transfer
Allows data t o be transferred between the PC and a computer for
collection and analyses.
(3) Data logging
Allows process data and fault information t o be down loaded t o
a printer from the PC. The AD51 E also includes an on-board real
time clock for time, event data recording.
(4) PC CPU remote runlstop
Allows the PC CPU t o be remote-controlled b y the AD51 E user
program.
(5) UPIDOWN load of PC sequence programs
Allows PC data (including sequence programs and parameters) t o
be transferred between the AD51 E and the PC CPU in machine
code. PC sequence programs can therefore be changed according
t o the control operation required.
(6) Computer communication
Allows data transfer between a computer and the PC CPU.
Either RS-422 or RS-232C may be used and the communications
system can be configuired as a multidrop link for u p t o 3 2 sta-
tions.