Digitrax DS78V Manuale di istruzioni - Pagina 2

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Figure 1: DS78V

System and Servo

output connections

To DCC Track

(Optional)

Servo#8, at Base Board

SW address +7

1.1 DS78V Quick Start - Eight 3-position semaphores:

To control eight servos driving 3-position semaphores using 16 switch addresses:

Follow the steps of section 1.0 to power on DS78V and setup the Base SW#.

Press and hold the OPS button for about 3 seconds until the green ID and

RTS LEDs blink alternately. Release the OPS button. The DS78V is now set-

up to configure Option Switch (OPSW) 1 to 40 by sending the required SW#

as Closed or Thrown to setup an option as T or C, as defined in Table 1.

Issue a SW#3 Closed command. This sets OPSW3 to Closed (C). From

factory default 2-position mode this will configure the eight servo outputs to

the 3-position Semaphore mode, each controlled by 2 SW#'s.

In Semaphore mode the DS78V will now respond to 16 SW consecutive ad-

dresses starting at the unit's Base SW#, in eight SW# pairs.

A switch command to the Base SW# will set Servo1 at: full Clockwise angle

for T (semaphore STOP/RED) and full Counter-Clockwise for C (semaphore

CLEAR/GREEN), as viewed from the arm-end of the servo

A switch command at Base SW#+1 will drive Servo1 to the mid-angle or Ap-

proach position (semaphore APPROACH/YELLOW) for either T or C.

In this way, each servo responds to a consecutive pair of switch commands:

the first SW# as T/C and the SW#+1 for the Approach setting. For example:

Base SW#+3 sets T/C for Servo2 and Base SW#+4 for T or C sets the center

Approach angle setting for Servo2.

Press and hold OPS button for about 3 seconds to now exit OPSW setup.

Connect linkages from the servo arms to the semaphores as needed.

12V DC in

omplete

rain

ontrol

servo

Servo examples in Thrown or

Clockwise arm orientation

as viewed from arm screw side

— 2 —

LocoNet

1/BRN

SW/SENSOR 5-8

SW/SENSOR 1-4

10 pin header cables

for 16 input line options

Servo#1, at Base Board SW address +0

(lowest Base Board SW address is 1)