Local Real Time Controller - ICP DAS USA 7188XA Series User Manual

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3.3 Local Real Time Controller

Host PC
RS-485
7188X/7521
(address-1)
RS-485
7188X/7521
(address-n)
The 7000 series modules are slave devices; the control programs are
implemented in host PC. The working steps are given as follows:
1. PC sends out commands to 7000 modules for input data.
2. PC analyzes this input data & generates some output data
3. PC send out commands to 7000 modules for output data
If there are hundreds of 7000 modules, the PC will take a long time to
analyze & control these modules.
The control program can be implemented in a local 7188X/7521. The PC
only has to send control arguments to the 7188X/7521, the 7188X/7521 will
control the local 7000 modules based on these control arguments. In this way,
the PC can handle thousands of 7000 modules with the 7188X/7521.
Some control functions are timing critical. The local 7188X/7521 can handle
these functions without the PC in real time.
7188XA/B/C & 7521/2/2A/3/4/7 Series Hardware User' s Manual, Ver. 3.0 Sep/2002, 7Mh-001-20 -----
+7(495)109-02-08 sales@bbrc.ru www.bbrc.ru
7520
RS-232
RS-485
7000 module
RS-485
7000 module
RS-485
7000 module
7000 module
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