Siemens SINUMERIK 840D sl Equipment Manual

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Obtaining user authorizationOn a TCU that has no user authorization, the first key that is pressed serves exclusively to requestthe user authorization, i.e. this key is not evaluated by the operating software.The settings for the right to veto are stored in file tcu.ini and are only effective if theoperating software is installed on the PCU. At the OP of the TCU, the operating software canbe operated in exactly the same way as an OP directly connected to the PCU.NoteThese operator input sequence steps must only be carried out by qualified personnel!4.3.2.11 Example: How to select the behavior of the TCUs during boot upExample: Distributing boot support across two PCUsTo distribute boot support over two PCUs, "Boot support runtime and configuration only (TFTP/FTP)" must be selected on PCU_1 and "Boot support IP address only (DHCP)" must be selected onPCU_2.The "No boot support" configuration must be selected on PCU_3:Table 4-5 "TCU support" settingsTCU_1192.168.214.10TCU_2192.168.214.11TCU_3192.168.214.12TCU_4192.168.214.13VNC connections:192.168.214.241192.168.214.242192.168.214.243VNC connections:192.168.214.241192.168.214.243VNC connections:192.168.214.241192.168.214.243VNC connections:192.168.214.241192.168.214.242Switch to system networkPCU_1192.168.214.241PCU_2192.168.214.242PCU_3192.168.214.243Services:X DHCP✔ TFTP✔ FTP✔ VNCServices:✔ DHCPX TFTPX FTP✔ VNCServices:X DHCPX TFTPX FTP✔ VNCCompany networkIn this case, PCU_2 serves as the DHCP server which provides the IP addresses for theconnected TCUs. PCU_3 is not involved in booting the TCUs, it is however displayed by theTCUs using VNC.General information and networking4.3 NetworkingHandheld Terminal HT 876 Equipment Manual, 02/2024, A5E52918633B AA