Com6 Serial Port Interface - Mettler Toledo IND500x Installationsanleitung

2.5.5 COM6 Serial Port Interface

The COM6 port includes connections for an intrinsically safe serial device. The figure below indicates which
terminal is which signal on the COM6 port. The cable length of this connection is limited to 10m (33 ft.).
Figure 37: COM6 Port
Figure 38: COM6 Serial Port Interface (left), installed above the analog load cell interface (right)
COM6 Port Signals
Terminal
J1-1
J1-2
J1-3
J1-4
An example of connecting to an RS-232 device in the safe area through a Zener diode barrier is shown in the
figure below.
36 Installation​ ​
WARNING
Refer to the entity approval values of COM6 when selecting a barrier. Note that
seals and other protective devices will also be required to meet hazardous area
wiring codes.
Signal
TxD - Transmit data
RxD - Receive data
GND - Logic Ground
GND - Logic Ground
IND500x