Westermo MD-54 - Manual (Page 4)

15 6605-2001
Designation Description
PWR Power supply OK
RD0 RD signal channel 0
TD0 TD signal channel 0
L1 RTS signal channel 0
L2 –
L3 CTS signal channel 3
L4 –
L5 RD signal channel 3
L6 TD signal channel 3
L7 RTS signal channel 3
L8 –
Connections MD-54
Direction Connection CCIT V.11
no. Description
Receiver 1 A’ (R+)
Receiver 2 B’ (R–)
Transmitter 3 A (T+)
Transmitter 4 B (T–)
5 Shield
Connection channel 0, RS-422/485 LED’s description
Direction Connection CCITT V.24
Signal description
DCE 9-pos D-sub Description
O 2 104 RD/Received Data
I 3 103 TD/Transmitted Data
– 5 102 SG/Signal Ground
I 7 105 RTS/Request To Send
O 8 106 CTS/Clear To Send
I = Input MD-54 O = Output MD-54
Connection channel 0, RS-232/V.24
Direction Connection CCITT V.24
Signal description
DCE no. Description
I 1 103 TD/Transmitted Data
O 2 104 RD/Received Data
I 3 105 RTS/Request To Send
O 4 106 CTS/Clear To Send
– 5 102 SG/Signal Ground
I = Input MD-54 O = Output MD-54
Connection channel 3, RS-232/V.24
Digital In, channel 1, 2 and 4 not used.
The definations R+/R–, T+/T– can be various between
different manufactures.