DECSFC—Select Flow Control

Select a flow control scheme for the communication port or printer port.

Format

CSI
9/11
Ps1
3/n
;
3/11
Ps2
3/n
;
3/11
Ps3
3/n
;
3/11
Ps4
3/n
*
2/10
s
7/3

Parameters

Ps1
determines which port is to be assigned the flow control scheme.

Ps1 Port Type
1, 0 or none Comm Port
2 Printer Port

Ps2
indicates the flow method. On the VT510, the transmit side or the receive side of the communication line can select different or the same flow control methods.

Ps2 Transmit or Receive
1, 0 or none Transmit
2 Receive
3 Transmit and Receive

Ps3
is for the flow control type. When the terminal is in PCTerm mode, XPC replaces XON/XOFF on the receive side.

Ps3 Flow Control Type
1, 0 or none XON/XOFF or XPC (XPC is for receive only)
2 DTR
3 Both
4 None

Ps4
sets the flow control threshold.

Ps4 Flow Control Threshold
1, 0 or none Low (64)
2 High (768)

The terminal uses "low" and "high" to denote the flow control threshold.

"High" flow control threshold is not available for the printer port, which always uses low (64 bytes) as the flow control threshold.