Doc. nr. : 012257
Version:
V1.9
Date:
16-02-2011
VDH Products B.V.
Type:
MANUAL FC500-PC
Page:
22 of 43
RS485-DIS (Local) communication connection:
This is the local RS485-DIS connection for the
3-button display-unit(s) and FC1100 Slave-
unit(s).
(Master/slave configuration see parameter
P91)
*) The cable must be terminated at both cable-
ends by a resistor of 250 Ohm between Line-A
and Line-B. When this unit is one of the cable
ends this termination is provided by placing a
jumper on J1.
#) At one point in the RS485-DIS cable the
pullup/pulldown jumpers J11 and J12 must be
placed for signal conditioning.
Each unit on the RS485-network must have a
unique network-number
MDR-BP unit needs a separate 24Vac
supply on G (24Vac) and Go (0V).
Use a 3-wire(or 4-wire with +12Vdc) shielded
0,75mm
2
Cable. Connect Line-A to Line-A,
Line-B to Line-B, 0V com. to 0V com. and
Shield to Earth at one side of the cable to the
next unit.
Symbol
PCB
Cable
(colour)
Cable
mm
2
Terminal
Name
Description
0V
0,75
RS485-NET
RS485-Display connection (0V)
{connect to Go of MDR-BP unit}
B
Line-B
0,75
RS485-DIS B
RS485-Display connection (Line-B)
{connect to B of MDR-BP unit}
A
Line-A
0,75
RS485-DIS A
RS485-Display connection (Line-A)
{connect to A of MDR-BP unit}
+12V
+12V
n.c.
RS485-DIS +12V RS485-Display connection (+12Vdc)
not connected {option}
Note:
The total RS485-DIS cable length is maximum 1Km.
