Profibus PA Gateway Connects the IS-RPI system to the control system via PROFIBUS PA, Fieldbus intrinsically safe EEx ia IIC, Device installation in Zone 1, Zone 2, or Zone 22, Up to 6 gateways on one intrinsically safe bus network, Transfer rate 31.25 kBits/s, Up to 8 I/O modules on one gateway via the backplane bus, PROFIBUS PA with intrinsically safe IEC 61158-2 transmission technology , PROFIBUS PA interface in accordance with FISCO, Transfer of HART signals, LED status indication.