Mettler Toledo IND570 Installationshandbuch Seite 43

Figure 2-27 shows the pin assignments and wire colors for the IDNet connector.
2.4.5.4. COM1 Serial Port Connections
The COM1 port includes connections for RS-232, RS-422 and RS-485. There is a setup parameter
that must be selected to match the hardware connection used. This parameter controls how the
Transmit and Receive lines are controlled.
Figure 2-28 indicates which terminal carries which signal on the COM1 port. Make the connections
as necessary.
30205319 | 02 | 04/2015
Pin
P1–A
P1–B
P1–C
P1–D
P1–E
P1–F
P1–G
P1–H
P1–J
P1–K
P1–L
P1–M
Figure 2-27: IDNet Connector Pin Assignments
Terminal Signal
TxD Transmit RS-232
RxD Receive RS-232
GND Logic Ground
TxD1+ +Transmit RS-422, RS-485 Jumper to RxD1+ for RS-485
TxD1- -Transmit RS-422, RS-485
RxD1+ +Receive RS-422, RS-485
RxD1- -Receive RS-422, RS-485
+5V 5 volts DC
Figure 2-28: COM1 Port Signals
METTLER TOLEDO IND570 Weighing Terminal Installation Manual
IDNet connector
Color Note
Green TXD+/RXD+
Blue +30V
Grey +12V
Green Jumper
Red RXD1+
White RXD–
Pink Ground
Yellow TXD–
Purple TXD1–
Black TSD1+
Orange RXD1–
Notes
Jumper to RxD1- for RS-485
Jumper to TxD1+ for RS-485
Jumper to TxD1- for RS-485
100 mA nominal current
2-19