Operating instructions

15 Technical Data WirelessHART Fieldgate SWG70
86 Endress+Hauser
15 Technical Data
15.1 Input
Wireless interface WirelessHART communication interface
Physical layer IEEE 802.15.4; 2006
Transmission rate Nominal 250 kBits/s
Operating frequency 2.4 GHz (ISM band)
Transmission range Under reference conditions: Outdoor 250 m, indoor 50 m
RF power level Configurable 0 dBm or 10 dBm, depending upon natioinal regulations
Input variables Process variables according to HART standard sent in burst mode by devices in network
Additional functions • Security mode for join key and network ID download (enabled by DIP switch)
• Buffering of process values for acquisition by host application
15.2 Output
15.2.1 Ethernet (100 BASE-T/100 BASE TX)
Protocol Configurable for HART IP and MODBUS TCP communication
Transmission rate 100 Mbit/s (max. cable length 100 m at 25 °C ambient temperature)
Type of protection None
Galvanic isolation Fully isolated from all other circuits
Maximum bus length 100 m (110 yds) depending upon cable
Connection facilities • 7-port terminal block
• Screw terminals: 0.2 mm
2
to 4 mm
2
for solid wire, 0.2 mm
2
to 2.5 mm
2
for stranded wires
15.2.2 RS-485 serial interface
Protocol Configurable for HART Version 7.0 or MODBUS RTU communication
Transmission rate Hardware or software configurable between 1200 Bit/s to 115200 Bit/s
Type of protection None
Galvanic isolation Fully isolated from all other circuits
Maximum bus length 1200 m (1230 yds), depending upon cable and transmission rate
Terminal resistor Integrated, settable by hardware (DIP-switch) or software
Connection facilities • Two 3-port terminal blocks, allowing series connection of several Fieldgates
• Screw terminals: 0.2 mm
2
to 4 mm
2
for solid wire, 0.2 mm
2
to 2.5 mm
2
for stranded wires