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WECM / Emerald eZA Manual | 15
6. Reset Modbus control and serial configuration to factory default:
Remove the lid from the back side of the drive cover.
Press and hold local tact buttons SW1 and SW2 both for 5 Sec.
After 5 Sec, LED #2 starts fast blinking at 5 Hz to confirm even handled.
Factory default reset value are as follow:
Modbus control enable: 0
MODBUS address: 0x55(85)
Baud rate: 19200 bits/s
Start bit: 1 bit
Data bits: 8 bits
Parity: Even
Stop: 1 bit
Reinstall the lid to the back side of drive cover.
7. Modbus serial configuration selection
In order to make the Modbus control available for different serial configuration. The serial parameters of inverter can be
changed by Modbus command.
The register 0x0008 is used to set the baud rate, writing the corresponding baud rate in the register 0x0008 according to
Table 7.
The register 0x0009 is used to set the other parameters of serial (Parity and Stop bit), writing the corresponding value in the
register 0x0009 according to Table 8.
Baud rate (bits/s)
Correspond Value of Register 0x0008
2400
2400
4800
4800
9600
9600
19200
19200
38400
38400
57600
57600
Table 7 - Baud Rate setting
Parity /Stop bit
Correspond Value of Register 0x0009
No parity, 1 stop bit
0x0000
Even parity, 1 stop bit
0x0001
Odd parity, 1 stop bit
0x0002
No parity, 2 stop bits
0x0003
Even parity, 2 stop bits
0x0004
Odd parity, 2 stop bits
0x0005
Table 8 - Parity and Stop bit setting
