FEC DSP1500 (SAN3) - Manual (Page 53)

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enFORCE Operation Manual
4.10 RS485 Interface Connection
The enFORCE system communication is performed via the RS485 port. These ports are
provided to link each SAN Unit together by “jumpering” from one controller to the next or for
connecting to a PC equipped with DSP User Console software. Both connectors are identical and
are internally connected. There is no order (upper or lower connection) in how the cables must be
connected from SAN Unit to SAN Unit.
NO Signal Name Channel
1 TX+ / RX+ CH1
2 TX- / RX- CH1
3 RX+ CH2
4 TX- CH2
5 TX+ CH2
6 RX- CH2
7 GND
8 GND
Mating
Connector: RJ45
SAN Unit Jumper Cable: FEC Part No.: FEB-1268
or standard CAT-5 cable
RS232 to RS485 PC Cable: FEC Part No.: FEB-1266
DO NOT connect these ports to an Ethernet Network or circuit damage may occur.
Internal circuit
RS-485
１
２ extended
３
to other DSP1500 ４
５
６
７
８ GND
RS-485
１
２
３
to other DSP1500 ４
５
６
７
８
ＳＮ 75176
1
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Chapter 4: System Setup and Wiring