ICP DAS USA 7188XA Series User Manual page 11

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1.1.9 7521/7522/7523 = Embedded Controller?
The 7521/7522/7523 is really an embedded controller before downloading any
firmware. After downloading the firmware, the 7521/7522/7523 acts as an
"Addressable RS-232 Converter". The only difference between the 7521 & the
7188XC is the 3000V isolation on the RS-485 port. In almost all areas, the
7521 is equivalent to the 7188XC+7510. So the 7521/7522/7523 can be used
as an embedded controller with isolation RS-485 port.
7188XA/B/C & 7521/2/2A/3/4/7 Series Hardware User' s Manual, Ver. 3.0 Sep/2002, 7Mh-001-20 -----
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