14.2.2 Setting the Data Format
Code
Name
Setting range
Default
Min.
Attri.
E8.11 Modbus data format
0...3
0
–
Stop
●
0: 1 start bit, 8 data bits, 1 stop bit, no parity
●
1: 1 start bit, 8 data bits, 1 stop bit, even parity
●
2: 1 start bit, 8 data bits, 1 stop bit, odd parity
●
3: 1 start bit, 8 data bits, 2 stop bits, no parity
The data format of the converter must be the same as that of the
master station. Otherwise, normal communication is impossible.
14.2.3 Setting the Local Address
In Modbus communication, the maximum number of frequency converters in the
network is 247. Each frequency converter must have a unique local address.
Code
Name
Setting range
Default
Min.
Attri.
E8.12 Modbus local address
1...247
1
1
Stop
14.2.4 Setting Command Signal Type
Code
Name
Setting range
Default
Min.
Attri.
E8.13 Modbus level / edge sensitivity se-
lection
0: Level sensitive
1: Edge sensitive
1
–
Stop
Level sensitive (default situation): The control word is not a real edge sensitive,
master should manually reset the command.
For example:
1. Simulate an error
2. Set bit 5 = 1, the error is reset
3. Simulate an error again
4. Set bit 5 = 1, the error is not reset
5. Master should set bit 5 = 0 firstly, then set bit 5 = 1, the error is reset
Edge sensitive (selectable): The control command is reset automatically after
the activation.
For example:
1. Simulate an error
2. Set bit 5 = 1, the error is reset
3. Simulate an error again
4. Set bit 5 = 1, the error is reset
Bosch Rexroth AG
Communication
VFC 3210
188/253
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