DL7, DL7L
30
To change the settings it is necessary to open the rear panel of device, remove and
again install the module. This work should only be carried out by properly qualified staff,
carefully and with keeping safety rules.
If screened cable is used to connect the pulse transmitter, then screen should be
connected to functional ground or metal cabinet ground (PE).
6.2.9 2RS485(24V)
– two RS485 port input module (Modbus RTU Master)
Fig. 6.13 Wiring diagram for 2RS485(24V) module.
Terminal No
Description
1
T1
9
A+
RS485 terminal A
2
T1 10
B-
RS485 terminal B
3
T2 11
G
Signal ground
4
T2 12
G
Signal ground
13
14
17
18
21
22
+24 VDC OUT (200 mA max)
Auxiliary transducers power supply (+). Terminals 13,
14, 17, 18, 21, 22 internally shorted. Overcurrent
protected.
15
16
19
20
23
24
-24 VDC OUT (200 mA max)
Auxiliary transducers power supply (-). Terminals 15,
16, 19, 20, 23, 24 internally shorted.
Notes:
Port 1 and port 2 are galvanically separated.
Auxiliary 24 VDC output is galvanically separated from Port 1 and Port 2.
More details on wiring RS-485 are described below for
