Parker Hannifin P/N88023735/01A Receive/Transmit Flags, Receive Flag Transmit Flag COM Function

Receive/Transmit Flags

You can set the flow control flags for RS-422 communications mode for each COM port. Table 2 shows how to set up COM1and COM2.

Receive Flag	Transmit Flag	COM Function
CLR (0)	CLR (0)	Not Used (Default)
CLR (0)	SET (1)	Use for RS-422 Operation:
		Full Duplex
		Receiver Enabled
		Transmitter Enabled
SET (1)	CLR (0)	Not Used
SET (1)	SET (1)	Not Used

Note: For bit and flag numbers, see “COM1 Stream Flags” and “COM2 Stream Flags” in “Appendix B” of the “ACR Motion Controller User’s Guide, Part 2.”

Table 2 Receive/Transmit Flags and COM Functions

Figure 1 ACRCOMM RS-422 Interface Schematic

– 4 – ACRCOMM and ACREXPAXIS User’s Guide