Siemens S5-135U/155U System Manual page 156

CPUs, Memory Cards, Memory Submodules, Interface Submodules
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
5-16
256, of which 253 are freely available
256, of which 253 are freely available
OB 1 to 39 (interfaces for operating system)
OB 121, 122, 124-126, 131-133, 141-143, 150, 151, 153, 200,
202-205, 222, 223, 254, 255
PG interface
Via interface submodules, optionally as V.24, TTY, RS422 A/485
submodule, SINEC L1 or PG interface
S5 bus
20.32 x 233.4 x 160 mm
Approx. 0.6 kg
System Manual
C79000-G8576-C199-06