Filter
Top Products
42
3. Implementation of the communication option cards
3. 3. Communication via Unitelway/Modbus network and VW3 A3 303 option card
3. 3. 1. Reminder of possible connection methods
If the chosen communication interface is the VW3 A3 303 option card (Modbus RTU/Jbus/Ascii, Unitelway) both the address and the
protocol format must be configured manually.
3. 3. 2. Configuring the drive address on the Modbus/Unitelway network
Transfer the Altivar 38 address to the Altivar 61:
An Altivar 38 was identified on the bus by its address, coded between 0 and 31.
The address corresponds to the number represented by the binary value 1 or 0 of the 8 card switches
(in fact only micro-switches 3 to 7 are used).
The least significant bits are on the right.
Transfer the Altivar 38 address to the Altivar 61 using the 8 switches on the right of the card; the value 0 being the OFF position,
the value 1 the ON position.
The least significant bits are on the right.
On the Altivar 38, the binary value 1 of a switch is in the up position, on the Altivar 61 this position is reversed, and the value 1 is effective
in the down position.
Example
Use of address 0 is not recommended on a Modbus/Unitelway network as this address has the effect of deactivating the option card.
ATV38 ATV 61
3 = D(A)
4 = 0 V
7 = D(B)
3 = D(A)
4 = 0 V
7 = D(B)
ATV38 ATV 61
Address 11 = 2#0001011
Address 11 = 2#0001011
Address ATV38 switches ATV61 switches Address ATV38 switches ATV61 switches
12345678 12345678 12345678 12345678
0 0000 0000 0000 0000 16 0010 0000 0001 0000
1 0000 0010 0000 0001 17 0010 0010 0001 0001
2 0000 0100 0000 0010 18 0010 0100 0001 0010
3 0000 0110 0000 0011 19 0010 0110 0001 0011
4 0000 1000 0000 0100 20 0010 1000 0001 0100
5 0000 1010 0000 0101 21 0010 1010 0001 0101
6 0000 1100 0000 0110 22 0010 1100 0001 0110
7 0000 1110 0000 0111 23 0010 1110 0001 0111
8 0001 0000 0000 1000 24 0011 0000 0001 1000
9 0001 0010 0000 1001 25 0011 0010 0001 1001
10 0001 0100 0000 1010 26 0011 0100 0001 1010
11 0001 0110 0000 1011 27 0011 0110 0001 1011
12 0001 1000 0000 1100 28 0011 1000 0001 1100
13 0001 1010 0000 1101 29 0011 1010 0001 1101
14 0001 1100 0000 1110 30 0011 1100 0001 1110
15 0001 1110 0000 1111 31 0011 1110 0001 1111