Mettler Toledo IND256x Guia De Instalacion página 30

2.7.3. Passive Current Loop
If IND256x terminal is connected to another IND256x weighing system as remote display, the
passive current loop interface must be connected to the active current loop of another IND256x
terminal. The passive current loop can only be installed in the COM3 socket of the mainboard.
2.7.4. Intrinsically Safe Analog 4-20 mA Output
The optional intrinsically safe analog 4-20 mA communication board connects to the COM2 port on
the IND256x mainboard. It provides an intrinsically safe analog signal of 4-20 mA, proportional to
the weight applied to the scale or to the rate of change of weight on the scale. The maximum cable
length for the Analog Output connection is 300 m / 980 ft. The cable used for the analog output
signal must be shielded.
2-10 METTLER TOLEDO IND256x Weighing Terminal Installation Manual
Table 2-7: Passive Current Loop Connection Between Terminals
IND256x COM3 (passive current loop J4)
(Remote display)
1
2
3
4
This option cannot be used together with WiFi option.
Figure 2-12: Intrinsically Safe Analog Output Option Board
IND256x COM3 (active current loop J2)
(Instrument connecting the weighing platform)
1
2
3
4
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