Siemens SIMATIC NET S7-1200 Compact Operating Instructions

3.6 Technical speci󹪝cations
Technical speci󹪝cations of the CSM 1277
Connectors
Attachment of end devices or network components
over twisted pair
4 x RJ-45 sockets with MDI-X pinning 10/100 Mbps
(half/ full duplex), 󹪞oating
Connector for power supply 3-pin plug-in terminal block
Electrical data
Power supply Power supply 24 V DC (limit: 19.2 to 28.8 V DC)
safety extra-low voltage (SELV)
Functional ground
Power loss at 24 V DC 1.6 W
Current consumption at rated voltage 70 mA
Overvoltage protection at input PTC resettable fuse (0.5 A / 60 V)
Permitted cable lengths
Connection over Industrial Ethernet FC TP cables
0 – 100 m
0 – 85 m
Industrial Ethernet FC TP standard cable with IE FC
RJ45 plug 180
or
over Industrial Ethernet FC outlet RJ45 with 0 -
90 m Industrial Ethernet FC TP standard cable +
10 m TP cord
Industrial Ethernet FC TP marine/trailing cable with
IE FC RJ45 plug 180
or
0 - 75 m Industrial Ethernet FC TP marine/trailing
cable + 10 m TP cord
learnable MAC addresses / Aging Time
learnable MAC addresses 2048
Aging time 280 seconds
Permitted ambient conditions
Operating temperature 0°C through +60°C
Storage/transport temperature -40°C through +70°C
Relative humidity in operation ‹ 95% (no condensation)
Operating altitude 2000 m at max 56 °C ambient temperature
3000 m at max. 50 °C ambient temperature
Immunity EN 61000-6-2
Emission EN 61000-6-4
Degree of protection IP20
MTBF
MTBF 273 years
Construction
Product characteristics
3.6 Technical speci󹪝cations
Compact Switch Module CSM 1277
18 Compact Operating Instructions, 06/2022, A2B00079397-02

Siemens SIMATIC NET S7-1200 Specifications

General

Supply voltage	24 V DC
Protection class	IP20
Product type designation	S7-1200
Transfer rate	10/100 Mbit/s
Number of ports	4
Power consumption	2.5 W
Operating temperature	0 °C to 60 °C
Mounting type	DIN rail
Switching capacity	1 Gbps