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17
MODULAR SMART SWITCH
4.2 Setting Parallel Ports as Inputs or Outputs
Figure 4-2. Selecting the Direction of Parallel Ports (Input or Output).
HIGH port
Dual parallel
port module
LOW port
HIGH port
switches
LOW port
switches
OFF
(0)
ON
(1)
1
ON
2 3 4
1
0
0
1
1
1
Set port as INPUT
Set port as OUTPUT
Automatic input/output
detection (* not guaranteed)
1
0
0
1
1
1
Set port as INPUT
Set port as OUTPUT
Automatic input/output
detection (* not guaranteed)
HIGH port switches
LOW port switches
16
MODULAR SMART SWITCH
Timeout Period
When a user has sent no data for the timeout period, the Modular Smart
Switch is able to switch to another user. The default timeout setting of 16
seconds is suitable for most applications. If printouts are ever merged,
increase the timeout period. Switches 1 and 2 on the base board control the
global default timeout period used by all the ports. Individual port timeouts
can be set using the software (see Chapter 6) or by sending software
commands (see Chapter 9).