Black Box 5000 manual DLC None

Multiserver 5000

Table 9-3. Sync Channel Characteristics (continued)

Option	Protocol	Default	Description
Number of	ASCII Bisync	1	Sets the number of leading pad characters to be
Leading Pad	EBCDIC Bisync	1	transmitted at the start of the block. This is used
Characters*	H-P Sync	1	for a time delay (1-9).
	RTS/CTS	3
	Sync-Pad	1
Number of	ASCII Bisync	1	Sets the number of trailing pad characters to be
Trailing Pad	EBCDIC Bisync	1	transmitted at the end of the block. External device
Characters*	H-P Sync	1	will have time to recognize the end of a block.
	RTS/CTS	3
	Sync-Pad	1
Buffer	DLC	NONE	Used to regulate data transmission from a device
Control	ASCII Bisync	NONE	attached to the port. The default setting (NONE)
	EBCDIC Bisync	NONE	removes all buffer control. When this option is
	H-P Sync	NONE	configured to CTS, the Multiserver will delay the
	RTS/CTS	NONE	CTS signal up to 250 milliseconds for buffer control.
	Sync-Pad	NONE
	MICOM DLC	NONE
	MICOM Voice	NONE
Encoding	DLC	NRZ	Depending upon attached device, select NRZ or
			NRZI.
Idle Fill	DLC	FLAG FILL	There are four Idle Fill options. Selection depends
			upon attached equipment:
			• Mark Fill sets an idle pattern of binary 1s between
			DLC frames. Use this for IBM 3270 SDLC half-
			duplex operation.
			• Fall Fill sets the idle pattern of hexadecimal 7E
			(flag) between DLC frames.
			• Auto Fill and A128 Fill automatically adjust idle
			between DLC frames to mark at the end of the
			transmission, or flag when the transmission is not
			finished. For IBM AS/400 5250 SDLC operation, set
			to either Auto Fill for Modulo 8 or A128 Fill for
			Modulo 128 frame sequencing.
Clock Flow	DLC	ENABLE	When Clock Flow Control is enabled, the local
Control	ASCII Bisync	ENABLE	Multiserver controls flow on the local port if the
	EBCDIC Bisync	ENABLE	Channel Clocking Option has been set to
	H-P Sync	ENABLE	RX-Internal. It does this by halting the channel’s
	RTS/CTS	ENABLE	clock. If NONE is chosen, there is no local data flow
	Sync-Pad	ENABLE	control. The data is discarded, and it is up to the
	MICOM DLC	ENABLE	remote Multiserver to issue a retransmit request.

* Prompt only. No menu.

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