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H704
INSTALLATION GUIDE
Z202366-0M
page 6
©2008 Veris Industries USA 800.354.8556 or 503.598.4564 / [email protected]
02081
configuration
1
1
2
4
8
16 32 64 128
O
N
1
1.
Communications Configuration:
Communications parameters for the H704
series are field selectable for your convenience. Please see Product Diagram
section for selector location. The following parameters are configurable:
Parity On or Off
•
Parity: Odd or even
•
Wiring: Two or four
•
Baud Rate: 2400, 4800, 9600 or 19200
•
The values of each dip switch are as follows:
1=1
2=2
3=4
4=8
5=16
6=32
7=64
8=128
To determine an address you simply add the values of any switch that is on.
For example:
or
H704 series can be addressed as any whole number between and including 1-247.
Each unit is equipped with a set of 8 dip switches for addressing. See below.
LSB
MSB
VALUE
Example: 2-wire 9600 Baud No Parity (Default Only)
=
=
1
X
X
X
X
X
X
2
On
Off
3
Off
On
Off
On
4
Off
Off
On
On
5
6
7
X
X
X
X
X
X
8
X
X
X
X
X
X
2400 Baud
4800 Baud
9600 Baud
19200 Baud
2 wire
4 wire
Wiring, Baud Rate, Parity
Wiring
None
Even
Odd
Off
Off
On
Off
On
Off
Parity
Baud Rate
DESIRED RESULT
Switch #
Baud Rate and Parity Switch Setttings
40
2.
Address Configuration:
Each Modbus device on a single network must have a
unique address. The switch block must be set to assign a unique address before the
device is connected to the Modbus RS485 network. If an address is selected which
conflicts with another device, neither device will be able to communicate.
Switch number 4 has an ON Value of 8 and switch number 6 has an ON Value of 32.
(8+32 = 40)
See the Communications Setup section for a pictorial listing of the first 63 switch
positions.
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www.
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