Elmo DBP SERIES 用户手册
78
DBP - Rev 6/93
6.5.5 RS485 Communication wiring
RS 485 COMMUNICATION
9
5
JC
6
8
7
1
2
3
4
AMP. No 1
T/R+
T/R-
COMPUTER
NOTES:
1. SHIELDING MUST BE CONNECTED AT COMPUTER END ONLY
2. PIN No.1 TRANSMIT/RECEIVE CONTROL
3. PIN No.4 +5V
SYMBOLS:
TWISTED PAIR
SHIELDING