Siemens S5-155U System Manual page 181

CPU 928B
Program blocks PB
Sequence blocks SB
Function blocks FB
Function blocks FX
Data blocks DB
Data blocks DX
Organization blocks OB
Integrated special function
organization blocks OB
Integrated serial interface
Optional serial interface
Backplane bus
Dimensions (w x h x d)
Weight
5 - 32
256
256
256
256
256, of which 253 are freely available
256, of which 253 are freely available
OB 1 to 39 (interfaces for operating system)
See Pocket Guide
PG interface
Via interface submodules, optionally as V.24, TTY,
RS 422A/485 or PG interface,
SINEC L1 interface from Version 6ES5 928-3UB12
S5 bus
40.64 x 233.4 x 160 mm
Approx. 1 kg
System Manual
C79000-B8576-C199-03