User Manual

1. Introduction
The 7521 series is a series of expandable embedded controllers designed
for industry applications. They can be used to replace the PC or PLC in harsh
environments. The 7521 series can be ordered as following:
Order Items Module name O. S.
7521(D)
Intelligent Communication Controller
(1 channel of RS-232)
MiniOS7
7522(D)
Intelligent Communication Controller
(2 channels of RS-232)
MiniOS7
7522A(D)
Intelligent Communication Controller
(1 channel of RS-232 & 1 channel of RS-422/485)
MiniOS7
7523(D)
Intelligent Communication Controller
(3 channels of RS-232)
MiniOS7
7524(D)
Intelligent Communication Controller
(4 channels of RS-232)
MiniOS7
7527(D)
Intelligent Communication Controller
(7 channels of RS-232)
MiniOS7
7XXX 7XXX without 7-SEG display MiniOS7
7XXXD 7XXX with 7-SEG display MiniOS7
7521/2/2A/3/4/7 Series Hardware User’s Manual, Ver. 1.5 Sep/2002, 7Mh-001-15 -----3