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(COM1:RS-232/RS-485 & COM2:RS-485). The user can choose I/O expansion board, X-Board, to expand the I/Os or memories of I-7188XG. I-7188XG supports Modbus Serial protocol, Modbus Master protocol, Fbus:RS-485, Remote I/O, SMS: Short Message Service, modem link, MMICON/LCD and user defined protocol.
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COM Ports PAC to PAC Support I/O Expansion Board: X-Board Series Inserting one I/O expansion board in I-7188XG can add : More I/O channels: X107, X109, X110, X111, X116, X119, X202, X203, X303, X304, X305, X308, X310 ...
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512 KB battery backup SRAM (RoHS) Remote Intelligent I/O Expansion Unit RU-87P1/2/4/8 CR ( It used to expand I-87K series I/O modules over the RS-485 ) No upgrade service from ISaGRAF-32 to ISaGRAF-256. Note: http://www.icpdas.com 3 of 4 [ I-7188XG/ I-7188XGD ]...
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Battery Backup SRAM I-7188XG/7188XGD can support up to 1024 retain variables with an X607/X608 plug in the only expansion I/O slot.Data can be stored in X607/X608, and then PC can load these data via COM1.