Serial Interface FTA Modbus 51303932-476 Honeywell Dimensions: 8.6 cm x 3.2 cm x 1.6 cm Physical Interface EIA-232 or EIA-485Devices Supported Multivendor Qualified Modbus Compatible DevicesDistance, Power Adapter to FTA • Internal cable within APM/HPM cabinet or• External cable 300 m (1000 ft.) maximumSurge withstand capability ANSI/IEEE C37.90.1-1978ESD Protection IEC 801.2Number of Devices per SI • 2 FTAs per SI• Up to 15 devices per FTAData Quantity per IOP 16 Points per serial channel (organized as Arrays in the APMM/HPMM)Each point can access one of the following:512 Booleans into FLAGS16 Reals or 32 Integers into NUMERICS64 NUMERICS (Diagnostic Counter Data Only)1 STRING of 64 Characters2 STRINGS of 32 Characters4 STRINGS of 16 Characters8 STRINGS of 8 CharactersSerial Data Format 8 data bits with programmable 9th bitEIA RS232 SupportTransmission Mode:Lines Supported:Distance, FTA to Device:Serial asynchronous, bidirectionalTXD, RXD, RTS, CTS, DSR, DTR, DCD, Logic GND, Protective GND15 m (2500 pf cable capacity maximum)