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For Programming only:
• A PC can be temporarily connected to CHN_A of CCU/IO-485 for programming. Note that this is
a straight through standard RS232 cable for laptops. Jumper JP30 must be set as shown
• When programming jumpers should be placed across A and across B on JP20.
7 of 9
CCU/IO-485
PC/LAPTOP
CHN_A
9PIN (DCE)
2
3
5
REF: CCU/IO-485.DOC REV: C June 20, 2000
PC/LAPTOP
25PIN
3
2
7
JP30
9PIN
2
3
5
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