Main Board; Communication Option Boards - Mettler Toledo IND256x Guia De Instalacion

1.10.

Main Board

The IND256x main board has the following main connections, indicated in Figure 1-5:
1. Analog load cell weighing interface
2. Intrinsically safe power input interface, connecting the power module
3. Flat ribbon harness interface, used to connect the display
4. Intrinsically safe RS232 interface (COM1)
5. Two communication option board interfaces (COM2 and COM3)
1.11.

Communication Option Boards

The IND256x can be configured with a maximum of two of the three communication option boards
installed inside its enclosure. The options are:
•
•
•
•
1-12 METTLER TOLEDO IND256x Weighing Terminal Installation Manual
1 4
2
WiFi communication module (available only in IND256x terminals factory-configured with
WiFi)
Intrinsically safe 3-20 mA analog output
Active current loop for connection to communication module ACM200 located in the safe area,
or to connect second IND256x terminal configured with passive current loop option
Passive current loop (used as the second display to connect another IND256x with active
current loop)
3 5: COM2 5: COM3
Figure 1-5: IND256x Main Board
30491430 | 02| 11/2019