Siemens SINUMERIK 840Di Function Manual page 1877

DB19
DBX12.6 RS-232-C off
Edge evaluation: no
Signal state 1 or RS-232-C off active
edge change 0 → 1
Signal state 0 or RS-232-C off inactive
edge change 1 → 0
Application Valid for HMI Embedded;
example(s) a file transfer can be initiated via RS-232-C.
DB19
DBX12.7 RS-232-C on
Edge evaluation: no
Signal state 1 or RS-232-C on active
edge change 0 → 1
Signal state 0 or RS-232-C on inactive
edge change 1 → 0
Application Valid for HMI Embedded;
example(s) a file transfer can be initiated via RS-232-C.
DB19
DBX13.5 Unload
Edge evaluation: no
Signal state 1 or Unload active
edge change 0 → 1
Signal state 0 or Unloading inactive
edge change 1 → 0
Application Valid for HMI Embedded;
example(s) a file transfer can be initiated using the hard disk.
NC/PLC Interface Signals (Z1)
Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0
Signal(s) updated: cyclic
Signal(s) updated: cyclic
Signal(s) updated: cyclic
2.1 Various interface signals and functions (A2)
Detailed Description
2-13