Comark RF500A - Manual (Page 31)

30
RF542 Network Transmitter - Detailed Operation
The RF542 Network Transmitter is a two external channel temperature monitor. Communication to the RF500
Gateway does not use RF but an Ethernet LAN connection is used instead. It allows temperature monitoring in
locations which are out of radio range of the Gateway.
The RF542 will only transmit data to its associated Gateway when connected to external power via the RF520
AC adaptor. If external power is removed, transmitter temperature monitoring and logging will continue. Once
external power is restored, data record transmission to the Gateway will resume.
Whilst external power is connected, the transmitter will become noticeably warm to the touch.
This is normal and expected behaviour.
Figure 13 - RF542 RJ45 Network Port
Connections to Network
This device supports fixed speed 100Mbps, half duplex. It has a DHCP client so the IP address will be assigned by the
network; there is no facility to set a static IP address.