Technical data

TECHNICAL REFERENCE MANUAL
3.2.3 Controlled mode
RS232
When using the RS232 interface only point-to-point communication is possible.
❢ Never connect multiple DLS-A(H)s on a RS232 serial line
RS422
It is possible to connect multiple devices on a single RS422 line. To ensure proper operation, strict Master-Slave
communication must be used. It is important, that the Master has full control of the communication and never
initiates a new communication before termination of the previous communication (answer from the DLS-A(H) or
timeout).
❢ Ensure, that all DLS-A(H)s are set to different ID numbers
Distance Laser Sensor Page 11/40
Fig. 4 Point-to-point connection with RS232
DLS-A(H)
Tx
Host
(PC or PLC)
Rx
TxRx
2
7,8
1
14,15
V+
9..30VDC
24..30VDC for DLS-AH
0V
Fig. 5 Connecting multiple devices with RS422
R+ R- T+ T-
DLS-A(H)
ID switch
Position 0
A
B
A
B
Host
(PC or PLC)
R
t
R
t
5 4 6 3
14,15
R
t
R
t
7,8
V+
R+ R- T+ T-
DLS-A(H)
ID switch
Position 1
5 4 6 3
14,15
7,8
V+
R+ R- T+ T-
DLS-A(H)
ID switch
Position 9
5 4 6 3
14,15
7,8
V+
9..30VDC
24..30VDC for DLS-AH
0V
(slave) (slave) (slave)
(master)