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Note that selecting Engineering Units for a protocol will cause the scanner addressing rate to be
reduced; it is better to scale calibrated 16 bit data to engineering units within the client software.
5.3.3 TCP Parameters
The TCP communication protocol parameters are shown in Figure 5.4. Options control the
microDAQs IP address and subnet mask, in addition to any gateway IP address required. Note
microDAQ's active TCP listening port is fixed at 101.
Figure 5.3, TCP Comms group
'IP Address'
IP address allocated to microDAQ on the user's network.
'Subnet'
Subnet mask as set on the user's network.
‘Apply’
Applies the settings to the local settings memory
Table 5.3, TCP Comms group settings
5.3.4 UDP Parameters
The UDP section (figure 5.5) holds all the settings specific to UDP. In UDP mode each acquisition
cycle (of ‘x’ number of channels) is packed as a separate UDP packet with a four byte
representation of the microDAQ serial number at the start of the packet. These are attempted to be
sent out at the required rate but with no checking for reception or validity of data.
Note that the microDAQ’s local IP address is the same setting as from the TCP Comms group and
the microDAQ’s local UDP port is also fixed at 101. Settings available from this section include
setting the UDP address and port for a remote connection (for auto streaming via UDP at boot up)
and a setting for auto broadcasting a UDP message at bootup to inform the network of the
availability of the microDAQ.
Figure 5.4, UDP Comms group
