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A S P M E T E R S O L I D C O R E
—
ASPMETER solid core
Configuration
1. Communications configuration: Communications
parameters for the ASPMETER series are field-selectable
for your convenience. Please see the product diagrams
section (page 6) for selector location. The following
parameters are configurable:
• Baud rate: 9600, 19200 or 38400
• Parity: on or off
• Parity: odd or even
• Wiring: two or four
ON
ON
ON
ON
1
2
3
4
1
2
3
4
5
1
2
3
4
1
2
3
4
BØ
B1
Odd/
Off/
BØ
B1
Odd/
2/4
Off/
On
Even
On
Even
Wire
Parity
Parity
BØ
B1
Odd/
Off/
Parity
Parity
BØ
B1
Odd/
Off/
On
Even
On
Even
Parity
Parity
Parity
Parity
Example: 2-wire 19200 baud, no parity (default only)
1
2
3
4
Off
Off
On
Off
Off
On
On
On
Off
Off
On
Off
Off
On
On
On
2. Address configuration: Each Modbus device on a single
network must have a unique address. Set the switch block
to assign a unique address before the device is connected
to the Modbus RS-485 network. If an address that conflicts
with that of another device is selected, neither device will
be able to communicate.
5
6
7
8
6
7
8
5
6
7
8
5
6
7
8
2/4
Reserved
Reserved
Wire
2/4
Reserved
2/4
Reserved
Wire
Wire
5
6
7
8
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Odd parity
X
X
X
X
X
X
Even parity
On
X
X
X
4-wire RS-485
Off
X
X
X
2-wire RS-485
3. Address the ASPMETER as any whole number between and
including 1–246. Each unit is equipped with a set of eight
DIP switches for addressing. See below.
ON
ON
ON
ON
LSB
1
LSB
1
1
LSB
LSB
1
1
1
1
1
4. To determine an address, simply add the values of any
switch that is on. For example:
ON
ON
ON
ON
LSB
1
LSB
1
LSB
LSB
1
1
Switch number 4 has an ON value of 8 and switch number
6 has an ON Value of 32. (8 + 32 = 40). Therefore, the
address for the ASPMETER is 40. See the address setup
section (page 10) for a pictorial listing of the first 63
switch positions.
9600
19200
Default DIP switch settings
38400
Reserved
The ASPMETER includes two DIP switches, as shown below.
No parity
Switches are shown in their default positions.
No parity
Comms Address
Comms Address
2
3
4
5
6
7
2
3
4
5
6
7
2
4
8
16
32
2
4
8
16
32
64
2
3
4
5
6
7
2
3
4
5
6
7
2
4
8
16
32
64
2
4
8
16
32
2
3
4
5
6
2
3
4
5
6
7
2
3
4
5
6
7
2
3
4
5
6
Comms Settings
Comms Settings
9
1
=
1
=
1
MSB
1
=
8
MSB
=
8
DIP Switch
64
128
MSB
DIP Switch
Values
MSB
128
8
8
Values
DIP Switch
128
DIP Switch
64
128
Values
Values
40
=
40
=
40
MSB
40
=
7
8
MSB
=
8
MSB
MSB
8
7
8
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