Flintec DAD 141.1 - Manual (Page 11)

DAD 141.1 Technical Manual, Rev. 2.2 - February 2014 Page 11 of 54
5.4. Terminals Power Supply
Depending on the grounding concept of the plant/scale, terminal 20 or 21 has to be connected to terminal 22.
The power supply must be able to support about 200mA per DAD 141.1.
5.5. Terminals Serial Port RS 422/485
The RS 422/485 port can be used for communication with a PC or PLC system.
5.6. Ethernet Port
5.7. Seal Switch
DAD 141.1
RS
422/485
Function
Pin no.
23 + Rx + Receive Data
24 - Rx - Receive Data
25 - Tx - Transmit Data
26 + Tx + Transmit Data
27 GND Signal ground RS422/485
The Ethernet port (29, RJ45) can be used for communication in
a local area network (LAN) with 10/100 Mbit/s
The Ethernet port supports:
- Ethernet TCP/IP, protocol ASCII, TCP port 23
- Modbus TCP, embedded in TCP/IP packages, protocol binary
data, TCP port 502.
The default IP address is 192.168.0.100, which can be changed
by the user.
DAD 1411
Power in Function
Pin no.
18 + Power supply +12..24 V DC
19 + Power supply +12..24 V DC
20 - Common ground / 0 V DC
21 - Common ground / 0 V DC
22 Shld. Chassis ground
Setup or changes of calibration can only be performed with an
open seal switch (28). Changes lead to get a new TAC value of
+ 1.
Running a legal for trade application needs the jumper
connected to the switch pins and a seal. A broken seal shows
up changes of calibration, which are not allowed.
Protected commands see next page.
The serial port supports two protocols:
- ASCII (characters) and
- Modbus RTU (binary data).