Alstom iSTAT M355, Manual

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User Manual M3x5/EN M/B
iSTAT M3x5
Page 49
When any other allowed port is used only a single connection is possible
Port 502
Is the standardized port to communicate with the device via MODBUS/TCP communication
protocol and is fixed. Communication via this port allows multiple connections to the device.
Communication over this port does not block any other traffic.
Port 33333
This UDP port is reserved for Discovery Service, a service run by the QDSP2 software, to
discover which devices are connected to the local Ethernet communication network.
Other available Ports
Other, allowed TCP ports, act as a terminal port and when connected to it, all other
connections (including port 502) are disabled until it is released.
10.6.2.5 Subnet Mask (KD)
It is used to determine what subnet an IP address belongs to.
10.6.2.6 Gateway Address
It is a gateway that connects separate network segments (LAN, WAN or internet).
10.6.2.7 NTP Server
This is the IP address of an NTP server that can be used for time synchronisation of the
device.
SNTP can usually maintain time to within tens of milliseconds over the public Internet, but
the accuracy depends on infrastructure properties - asymmetry in outgoing and incoming
communication delay affects systematic bias.
PLEASE NOTE
It is recommended that a dedicated network rather than public network is used for
synchronisation purposes using SNTP.
Factory settings for Ethernet Communications are:
IP Address DHCP (automatically)
TCP Port 10001
Subnet Mask 255.255.255.0