1. W-8x37 / 8x47 ISaGRAF PAC now supports FRNET I/O. Please visit below web site for more information.

      http://www.icpdas.com/faq/isagraf.htm FAQ048  &
      http://www.icpdas.com/products/PAC/I-8000/data%20sheet/data%20sheet.htm  
      http://www.icpdas.com/products/Remote_IO/frnet/frnet_list.htm

Advantage of FRNET I/O :

(1) Fast Scan, about 3 ms / per FRNET scan . (This depends on your ISaGRAF PLC program's scan time, if
      ISaGRAF PLC scan time is 8ms, then the scan time for all will be 8 ms, not 3 ms .
(2) The max. I/O channel number can be 7 x 256 = 1792 Ch. of Digital Input plus 1792 Ch. of Digital Output (if all
      7 slots are plug-in I-8172)

FRNET I/O havn't support A/I & A/O yet.

2. W-8x47 ISaGRAF PAC now supports Ethernet I/O: I-8KE4-MTCP & I-8KE8-MTCP. Please visit below
     web site for more information.

     http://www.icpdas.com/faq/isagraf.htm FAQ042 &
     http://www.icpdas.com/products/PAC/I-8000/data%20sheet/data%20sheet.htm   
     http://www.icpdas.com/products/PAC/I-8000/I-8KE4_8KE8_MTCP.htm

Advantage of Ethernet I/O :

(1) Fast scan for AI, AO, DI, DO, about 10 to 40 ms depends how many I-8KE4/8-MTCP are connected
(2) The max. I/O channel number can be 32 x 8 x 24 = 6144 (D/I + D/O) or 16 x 8 x 24 = 3072 (A/I) if plugging
       I-8017HS in all 24 nodes of I-8KE8-MTCP . .