Siemens Simatic S7-300 - Technical Specifications

RS 485 Repeater
7-6
Programmable Logic Controllers S7-300 Module Data
A5E00105505-03
7.4 Technical Specifications
Technical specifications of the RS 485 repeater
Technical Specification
Power supply
Power supply
• Rated voltage 24 VDC
Rated voltage
• Ripple
24 VDC
20.4 to 28.8 VDC
Current consumption at rated voltage
Current consumption at rated voltage
• Without node at PG/OP socket 100 mA
Without node at PG/OP socket
• Node at PG/OP socket (5 V/90 mA)
Node at PG/OP socket (24 V/100 mA)
100 mA
130 mA
200 mA
• Node at PG/OP socket (24 V/100 mA) 200 mA
Isolation Yes, 500 VAC
Connection of fiber optic cables Yes, via repeater adapters
Redundancy operation No
Transmission rate (automatically detected by the repeater) 9.6 kbaud, 19.2 kbaud, 45.45 kbaud,
93.75 kbaud, 187.5 kbaud, 500 kbaud.
1.5 Mbaud. 3 Mbaud, 6 Mbaud, 12
Mbaud
Degree of protection IP 20
Dimensions W x H x D 45 x 128 x 67
Weight (incl. packaging) 350 g
Pin assignment of the sub-D connector (PG/OP socket)
View Pin No. Signal Name Designation
1 – –
5
2 M24V Ground 24 V
9
5
3 RxD/TxD-P Data line B
9
4
8
4 RTS Request To Send
4
3
8
5 M5V2 Data reference potential (from station)
3
2
7
6 P5V2 Supply plus (from station)
2
1
6
7 P24V 24 V
1
6
8 RxD/TxD-N Data line A
9 – –