PPI mode:

• Signal conversion from RS232 to RS485
• Control of token in a multimaster PPI network (PPI master)
• Supports 10-bit modem protocol via RS232, and DPT and PPI protocols via RS485

Freeport mode:

• Signal conversion from RS232 to RS485
• Switchover between local and remote modes
• Configuration in local mode using DIP switches
• Configuration in remote mode using terminal program (e.g. MS Hyper Terminal)
• Supports AT modem commands and PIN for Siemens modems