Number Definition Description
1 +24V The positive polarity of the module’s power supply ,
24V(18V-30V), switch power supply
The ground of the module’s power
3 PE The protection of the module, for ground
4 Reservation
5 IN1 Digital input 1, Passive Connection Point
6 IN2 Digital input 2, Passive Connection Point
7 IN3 Digital input 3, Passive Connection Point
8 IN4 Digital input 4, Passive Connection Point
9 COMA Digital input for ground
10 AN+ Analog output+
11 AN- Analog output-
13 NC
14 NC
15 NC
16 TX/A RS232 send terminal, RS485 A signal terminal
17 RX/B RS232 receive terminal, RS485 B signal terminal
18 GNDB RS232 和 RS485 ground wire
20 O1+ Solid relay output 1
23 O2- Solid relay output 2
24 O3+ Solid relay output 3
25 O3- Solid relay output 3
26 O4+ Solid relay output 4
27 O4- Solid relay output 4
28 EX+ Excitation voltage output+
30 EX- Excitation voltage output-
31 SENSE- Solid relay feed up-
33 SIG+ Signal input+
34 SIG- Signal output-
35 NC
36 NC
Table 3-1 the List of Terminals
It is only used as a signal transmitting. When multi-load cells are used, a junction box is to be used to
connect them in a parallel circuit and the final weighing signal is sent to the transmitter. The cable
between the junction box and the transmitter must have metal shielding. Refer to the Table 3-2.
Table 3-2