Black Box SW590A-R2, SW591C manual Bank Assignments, Code Operated Switch

CODE OPERATED SWITCH II

In addition, there are some system characteristics that are set with the eighth DIP switch of the individual port switch banks. Sections 3.6 and 3.7 explain these functions in depth.

3.4 Bank Assignments

The individual port switch banks are assigned as follows:

Bank Label	Port
SWA	Master Device Port
SWB	0
SWC	1
SWD	2
SWE	3

The Four-Port Expansion Board provides these additional banks:

Bank Label	Port
SWH	4
SWI	5
SWJ	6
SWK	7

3.5Configuring Ports with the Individual Port Switch Banks

To set the switch banks, use a small screwdriver or other small object with a clean edge or point. The individual port switch banks are identical in function, and the set of charts provided on the following pages applies to all of them.

3.5.1PORT SPEED (SWITCHES 1, 2, AND 3)

Speed		Set Switches
	1	2	3
110 bps	ON	ON	ON
300 bps	OFF	ON	ON
600 bps	ON	OFF	ON
1200 bps	OFF	OFF	ON
2400 bps	ON	ON	OFF
4800 bps	OFF	ON	OFF
9600 bps	ON	OFF	OFF
19200 bps	OFF	OFF	OFF

3.5.2PARITY (SWITCHES 4 AND 5)

Parity	Set Switch
	4	5
Even	OFF	ON
Odd	ON	OFF
None	OFF	OFF

3.5.3WORD SIZE (SWITCH 6)

Size	Set Switch 6
7 bits per word	OFF
8 bits per word	ON

3.5.4FLOW CONTROL (SWITCH 7)

Flow Control	Set Switch 7
Hardware (DTR/CTS)	ON
Software (X-ON/X-OFF)	OFF

3.6Setting Global Characteristics with the System Switch Banks

Refer to the explanations and the charts below to set the system switch banks SWF and SWG.

3.6.1FUNCTIONS OF SWITCH BANK SWF

Responsibility for the Link Command

When the COS II receives a control code sequence from the proper device, it will establish a communications link between the master port and one of the slave ports. If it then receives the lockout character—a character with a value of 38 in hexadecimal—it will ignore the remaining unlinked subordinate ports. For more information on links and lockouts, see Sections 4.2 and 4.3.

You can set the Switch to accept the command to link from only the master port, only a slave port, or from either the master or a slave port. Switches SWF 1 and SWF 2 designate the origin of the link.

	Set SWF
Origin of Command	1	2
master	ON	ON
slave	OFF	ON
either master or slave	ON or OFF	OFF

NOTE: If the slave ports are set up for hardware flow control, or if DTR/CTS pass-through is enabled, you should set the Switch to accept a link command from the master port only.

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