Siemens SIMATIC S7-200 System Manual page 451

Table A-2 Specifications for CPU 221 DC/DC/DC and CPU 221 AC/DC/Relay (continued)
Description
Order Number
On-board Communication
Number of ports
Electrical interface
Isolation (external signal to logic circuit)
PPI/MPI baud rates
Freeport baud rates
Maximum cable length per segment
up to 38.4 kbaud
187.5 kbaud
Maximum number of stations
Per segment
Per network
Maximum number of masters
PPI master mode (NETR/NETW)
MPI connections
Cartridge Options
Memory cartridge (permanent storage)
Battery cartridge (data retention time)
Clock cartridge (clock accuracy)
Power Supply
Line voltage-permissible range
Input current CPU only/max load
In rush current (max)
Isolation (input power to logic)
Hold up time (from loss of input power)
Internal fuse, not user-replaceable
24 VDC Sensor Power Output
Voltage range
Maximum current
Ripple noise
Current limit
Isolation (sensor power to logic circuit)
S7-200 Programmable Controller System Manual
A5E00066097-02
CPU 221 DC/DC/DC
6ES7 211-0AA21-0XBO
1 port
RS-485
Not isolated
9.6, 19.2, and 187.5 kbaud
0.3, 0.6, 1.2, 2.4, 4.8, 9.6, 19.2, and
38.4 kbaud
1200 m
1000 m
32 stations
126 stations
32 masters
Yes
4 total; 2 reserved: 1 for PG and 1 OP
Program, data, and configuration
200 days, typical
2 minutes per month at 25 C
7 minutes per month 0 C to 55 C
20.4 to 28.8 VDC
80/900 mA at 24 VDC
10 A at 28.8 VDC
Not isolated
10 ms at 24 VDC
2 A, 250 V, Slow Blow
15.4 to 28.8 VDC
180 mA
Same as input line
600 mA
Not isolated
S7-200 Specifications
CPU 221 AC/DC/Relay
6ES7 211-0BA21-0XB0
1 port
RS-485
Not isolated
9.6, 19.2, and 187.5 kbaud
0.3, 0.6, 1.2, 2.4, 4.8, 9.6, 19.2, and
38.4 kbaud
1200 m
1000 m
32 stations
126 stations
32 masters
Yes
4 total; 2 reserved: 1 for PG and 1 OP
Program, data, and configuration
200 days, typical
2 minutes per month at 25 C
7 minutes per month 0 C to 55 C
85 to 264 VAC
47 to 63 Hz
15/60 mA at 240 VAC
30/120 mA at 120 VAC
20 A at 264 VAC
1500 VAC
80 ms at 240 VAC, 20 ms at 120 VAC
2 A, 250 V, Slow Blow
20.4 to 28.8 VDC
180 mA
Less than 1 V peak-to-peak (maximum)
600 mA
Not isolated
A-7