Siemens SINUMERIK 840D sl Function Manual page 577

Figure 11-16
Data for F_RECVDP are displayed using the "Receive connection" softkey and "Display SPL
couplings".
Figure 11-17
Safety Integrated
Function Manual, 12/2017, 6FC5397-4BP40-6BA1
SPL coupling (sending)
SI communication (receive)
Diagnostics
11.1 Troubleshooting procedure
577