TR-Electronic CDV582 - Defining the Target Unique Network Identifier (TUNID)

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10/07/2020 TR-ECE-BA-GB-0163 v03 Page 29 of 91
3.5 Defining the Target Unique Network Identifier (TUNID)
The TUNID uniquely identifies the measuring system across all networks in the safety system and is a
combination of “Safety Network Number” SNN (6 bytes) and the measuring system’s IP address (4
bytes).
At delivery, the measuring system is assigned a default value of FFFF_FFFF_FFFF. Thus, the user
must assign a valid value. The TUNID can be assigned by the TR program TR SNCT Device
Applet or by an originator using the services Propose and Apply TUNID.
The measuring system performs a self-test when the supply voltage is ON, provided the supply
voltage is switched on in this state. When the self-test completes successfully, the measuring system
changes to the status WAITING FOR TUNID and waits for a TUNID to be assigned. This state is
exited only after a valid assignment has been made.
The user must assign unique SNN numbers
for each safety network or safety subnet
across the entire system.
Establishing a TUNID is a prerequisite for the measuring system to be instal
led in a
safety network.
3.5.1 Setting the Node ID or IP address
The measuring system may be destroyed or damaged or its function be
impaired by penetration of foreign bodies and ingress of moisture!
 Firmly close the access to the address switches
with the screw plug
after the settings have been made.
Every EtherNet/IP™ node in an EtherNet/IP™ segment is addressed by an 8-bit node ID (node
address). This address may be assigned only once within an EtherNet/IP™ segment and is therefore
only relevant to that local EtherNet/IP™ segment. The preset node ID corresponds to the host ID and
is part of the IP address.
Default IP address if hardware switch is active
192.168.1.
<preset EtherNet/IP™ node ID>
Network ID
Host ID
Table 2: IPv4 address assembly
The node ID is set using two HEX rotary switches which are read only at the starting moment.
Subsequent settings during ongoing operation will no longer be detected. See also Chapter “Obtaining
IP Parameters” on Page 78.
Hardware switch
* Configuration Control
Action
0x00
0x00
Configuration from FLASH
0x02
Configuration via DHCP
0x01 … 0xFE
not relevant
Hardware switch active
0xFF
not relevant
Configuration via DHCP
Table 3: Switch activation
* See “Attribute 3, Configuration Control” from “TCP/IP Interface Object” on Page 77.