Solution:

We use BTR0 and BTR1 to set the baudrate, the following is the corresponding table: 20Kbps : BTR0 = 0x0F, BTR1 = 0x7F 125Kbps : BTR0 = 0x03, BTR1 = 0x1C 250Kbps : BTR0 = 0x01, BTR1 = 0x1C 500Kbps : BTR0 = 0x00, BTR1 = 0x1C 1 Mbps : BTR0 = 0x00, BTR1 = 0x14 Actually, you can use "monitor.exe" which comes with PCL-841 Utility Disk to calculate BTR0/BTR1. The procedure is shown as follows: 1. Execute monitor.exe under DOS environment 2. Under [Config] label, select the baudrate you want to transfer to BTR0/BTR1 3. Press [ESC] key to terminate the setting window 4. Read BTR0/BTR1 values in the right frame