Jesco EASYPOOL SMART 02, Руководство по эксплуатации

Страница: 28 / 44

8 | EASYPOOL SMART 0 Operating Manual
Controller
IMPORTANT!
To incorporate a bus system on a PC use a "KAT.5
type 2X2XAWG24/1 (Lapp cable)" computer lead or
better. Using other cables can cause data errors and
affect the data communication.
Modern PCs are fitted with USB ports. To connect to an RS 485
network you need an additional interface converter (RS 485 to
USB, part no. 4430010).
The interface module is located on the main board in the rear
housing section. It is partially hidden from view by the output
module.
Fig. 4.14.1: RS 485 connections on the interface component’s board partially
hidden from view by the output components
NOTICE!
The data line must be closed on both ends of the
network with a 120 Ohm line resistor and must be
routed to a fixed potential with pull-up/pull-down re-
sistors on the last TOPAX in the network.
To connect the 10 Ω resistor to the side of the controller and
to switch the pull-up/pull-down resistors, two jumpers must be
connected to the TOPAX DX SMART (the last one in the network).
The resistances are not active in its delivered state. The 10 Ω
resistor is applied at the PC side via the interface converter.
The jumper slots are located in the front of the housing on the dis-
play board, above the flat band-connection to the main board.
TopView Software
For the remote indication a visualization program is offered in two
versions. The program TopView mini is free of charge and can be
downloaded from Internet.
resistances are NOT activated
(delivery status)
resistances are activated
(last device in the network)
Jumper position: OFF Jumper position: ON
The resistances are NOT active.
jumpers are set DOWN The resistances are active.
jumpers are set UP
Fig. 4.14.: Position and setting of the jumpers to activate the RS 485 resistors
on the last TOPAX DX in the network.
RS485
B A
AB
B A
Fig. 4.14.3: RS 485 network installation with two controllers:
a
controller 1
(activate terminal resistors on the display board),
b
controller (optional),
c
LEDs (yellow: voltage, red: signal request from PC, green: signal/reply from con-
troller),
d
terminal resistors,
e
RS 485 - USB interface converter,
f
RS 485
network (max. length 1,000 m),
g
PC with TopView software