Siemens SIMATIC S7-300 Series Reference Manual page 65

MPI
S
Services
– PD/OP Yes
communication
– Global data Yes
communication
– S7 basic Yes
communication
– S7 communication Yes (server)
S
Transmission rates 19.2; 187.5 Kbps
Dimensions
Assembly dimension 160 125 130
B H T (mm)
Weight Approx. 0.9 kg
Programming
Programming language STEP 7
Stored instructions See Instruction List
Nesting levels 8
System functions (SFCs) See Instruction List
System function blocks See Instruction List
(SFBs)
User program security Password protection
Voltages, Currents
Power supply 24V DC
S
Permissible range 20.4 to 28.8 V
Current consumption (idle) typical 1.0 A
Inrush current typical 8A
2
l t 0.4 A
External fusing for supply Circuit breaker; 2 A
lines (recommendation)
Type B or C
PLC S7-300, CPU Specifications CPU 312 IFM to CPU 318-2 DP
A5E00111190-01
PD supply at MPI (15 to
30V DC)
Power losses
Battery
S
Backup margin at 25_
C and continuous CPU
buffering
S
Battery shelf life at
25_C
Accumulator
S
Clock back-up period
–
–
–
S
Battery charging time
Integrated inputs/outputs
Addresses of integral
S
Digital inputs
S
Digital outputs
S
Analog inputs
S
Analog outputs
Integrated Functions
Counter
Frequency meter
2
s
Positioning
max. 200 mA
Typically 16 W
Yes
min. 1 year
approx. 5 years
Yes
at 0 to 25_C Approx. 4 weeks
at 40_ C Approx. 3 weeks
at 60 _ C
Approx. 1 week
Approx. 1 hour
E 124.0 to E 127.7
A 124.0 to A 127.7
PIW 128 to PIW 134
PQW 128
1 or 2, 2 directional
comparisons
(see Integrated Functions)
manual
up to 10 kHz max.
(see Integrated Functions)
manual
Channel 1
(see Integrated Functions)
manual
CPUs
1-49