Configure setup switches – Western Telematic APS-16 User Manual
Page 15
4.2. Configure SetUp Switches
The SetUp Switches are used to select default settings for the APS RS232 ports. On model
APS-16 , the SetUp Switches are located on the underside of the unit. On APS-8 and APS-4
models, the SetUp Switches are located on the instrument
back panel.
When the APS is shipped from the factory, the SetUp Switches are configured for 9600 baud, 8
Bits-No Parity, RTS/CTS handshaking, verbose command response, and command echo on (all
switches ON). These settings are compatible with most applications. If the default settings are
not compatible with your application, change the switch settings as follows.
Notes:
• The SetUp Switches should be configured to match the parameters your control
device will use when communicating with the APS. This will ensure access to
command functions, even if the unit is initialized to default parameters.
• If the SetUp Switch configuration is changed, new parameters will not take effect
until the unit is initialized as described in Section 4.3.
• Operating parameters (baud rate, parity, etc.) can be selected for each port using
the /P command as described in Section 5.5. The /P command can select different
parameters for each APS port.
• When the APS is initialized, parameters will return to settings specified by the
SetUp Switches.
On/Off Positions: On the APS-8 and the APS-4 (Switches on Back Panel), the switches are
ON when placed in the DOWN position. On the APS-16 (Switches on underside of unit)
On/Off positions are indicated on a label adjacent to the SetUp Switches.
4.2.1.
Default Baud Rate (Sw1, Sw2, Sw3)
SetUp Switches one through three select the default baud rate for all APS RS232 Ports. The
default baud rate must match the rate your control device will use when communicating with
the APS. If the control device will communicate via modem, select a default baud rate that is
compatible with the modem. Note that the /P command can also be used to select a different
operating baud rate for each port.
SW
Default Baud Rate
1
2
3
ON
ON
ON
9600*
OFF
ON
ON
300
ON
OFF
ON
1200
OFF
OFF
ON
2400
ON
ON
OFF
19.2K
OFF
ON
OFF
38.4K
ON
OFF
OFF
57.6K
OFF
OFF
OFF
115.2K
* = Factory Setting
4-2
APS Series - Asynchronous Port Switches, User's Guide
Hardware Installation