The sequence of steps to define the STP timing only link connection between a z14 ZR1 and  a z14 that uses CS5 CHPIDs by using HCD is the same as for defining the CF links to a  connection by using CS5 CHPIDs. Complete the procedure as described in 9.3.2, “ICA SR:  Managing the configuration” on page 208. Consider the following points: GLYPH<SM590000> On the CF links connection step, after including the data that is related to the CPC CETUS  side of the connection, enter  YES  on the Timing-only link option of the Connect to CF  Channel Path panel (see Figure 9-13) and press Enter . Figure 9-14 Only STP Timing links connected Figure 9-13 STP timing only link from z14 ZR1 to z13 by using CS5 GLYPH<SM590000> After accepting or overriding the Control Unit and Device numbers for both processors,  HCD returns to the CF Channel Path Connectivity List panel (see Figure 9-14). You can  see that only the STP timing links are now connected. 9.4.2 STP timing-only links: Managing the configuration After activating the new configuration with the ICA SR links that are defined as STP  timing-only links and after all cables are connected, verify whether the CHPIDs are online and  operating by using z/OS or the SE panels. The same process that you used for ICA SR links is followed to check the status (online and  operating) of the CS5 CHPIDs that were defined to work as STP timing-only links. Complete the steps that are described in 9.3.2, “ICA SR: Managing the configuration” on  page 208 by using the respective CHPID/PCHID of the links you are interested in checking  the status. 212  IBM z14 Model ZR1 Configuration Setup