Amano AGP-2000 Series, Руководство по установке и эксплуатации, Страница: 19 / 40

Communications Wiring
This PCB provides RS485 communications connections from the host computer to
the AGP-2000 if the unit is used in an on-line system (NEC Class 2 wiring only).
The communications wire shielding must be tied to earth ground only at the device
location furthest from the host computer.
Termination Resistors
The AGP-2000 is equipped with Termination Resistors for Com1 and Com2. The
Termination Resistors are mounted on the RWPV Main Logic PCB. The AGP-2000 is
shipped with the Termination Resistors in the
terminated (left) position. The
Termination Resistors should remain in the terminated position if this is the last unit
on the RS485 network. You must move the Termination Resistors to the
unterminated
(right) position if this is not the last unit on the RS485 network.
AGP-2000 Installation and Operations / INSTALLATION 3 - 5
Figure 3-4, Communications Interconnect PCB
Figure 3-5, The Termination Resistors