Siemens SIMATIC NET PROFIBUS, Owner'S Manual, Page: 170 / 490

Active Components for RS-485 Networks
5-4
PROFIBUS Networks SIMATIC NET
6GK1970-5CA20-0AA1 Release 2 05/2000
Technical Specifications
Table 5-2 lists the technical data of the RS-485 repeater:
Table 5-2 Technical Data of the RS-485 Repeater
Technical Specifications
Power supply
S
Rated voltage 24 V DC
S
Ripple (static limit) 20.4 V DC to 28.8 V DC
Power consumption at rated voltage
S
Without load on the PG/OP connector 200 mA
S
Load on the PG/OP connector (5 V/90 mA) 230 mA
S
Load on the PG/OP connector (24 V/100 mA) 300 mA
Electrical isolation yes, 500 V AC
Transmission rate (detected automatically by
repeater) 9.6 Kbps, 19.2 Kbps, 45.45 Kbps,
93.75 Kbps, 187.5 Kbps, 500 Kbps,
1.5 Mbps, 3 Mbps, 6 Mbps 12 Mbps
Degree of protection IP20
Dimensions W H D (in mm) 45 128 67
Weight (including packing) 350 g
Pinout of the Sub D Connector (PG/OP Connector)
The 9-pin sub D connector has the following pinout:
Table 5-3 Pin Assignment of the 9-Pin Sub D Connector PG/OP Connector
Layout Pin no. Signal name Meaning
1 – –
2 M24V Chassis 24 V
5
3 RxD/TxD-P Data line B
9
4
4 RTS Request To Send
3
8
5 M5V2 Data reference potential (from station)
2
7
6 P5V2 Power supply plus (from station)
2
1
6
7 P24V 24 V
1
8 RxD/TxD-N Data line A
9 – –