Come si programma il decoder accessori Merg?

[Fabio_C.]

Salve,
ho difficolt

[Fabio_C.]

2. Page mode or direct mode (will accept either)

CV513 or CV1 low address bits (0 to 63) Default = 1

CV514 or CV2 output on or off. (0 to 255) Default = 255 (all on)

CV515 or CV3 time for output pair 1. (0 to 255) Default = 5

CV516 or CV4 time for output pair 2. (0 to 255) Default = 5

CV517 or CV5 time for output pair 3. (0 to 255)Default = 5

CV518 or CV6 time for output pair 4. (0 to 255) Default = 5

CV519 or CV7 Version number set at 4

CV520 or CV8 Manufacturer's ID set at 165

CV521 or CV9 high address bits (0 to 7) Default = 0

CV541 or CV29 Configuration (set to 128)

CV545 or CV33 Lenz (toggle) mode. See notes below. Default = 15

CV513 and CV521 together form a 9 bit binary address for the decoder giving a range from 0 to 511. (512 possible decoders)

CV545 (CV33) now gives the ability to set individual output pairs into a Lenz compatible toggle mode. Each of the low four bits of this CV, if set to 1, enables toggle mode for that output pair. The decoder actually has 8 outputs but these can be paired as 1a,1b - 2a,2b - 3a,3b - 4a,4b when used for point motors or dual aspect signals. When in toggle mode, an activate signal sent to 1a will automatically turn off 1b and vice versa. Further, as some Lenz systems seem to send continuous activate packets, the output will only give a single pulse (provided the time is not set to continuous) irrespective of subsequent activates. This prevents all possibility of point motor burn-out and allows the MERG CDU to recharge after each pulse. In this toggle mode, there is no need for any deactivate packets, their presence will be ignored.

Individual pairs can be set to toggle mode and others left in normal mode. In normal mode, each output is individually controlled with activate and deactivate packets. However, where an output needs to be on while a button is held down (continuous activates) you can set to normal mode with a time set to whatever is needed to avoid `flicker'. This depends on how often the activate command is refreshed. The output will now cease when the button is released (plus whatever the pulse time is).

The default for the Acc4 PICs will be with toggle set on all outputs. They will then be compatible with the MERG accessory encoder and Lenz systems without modifying the CV545. Only where individual outputs are needed, as in signalling or lighting effects will CV545 need setting to normal mode.

Acc4 will work with both types of MERG accessory decoder, the CDU (pulse) type and the steady state (Tortoise) type. However, for a steady state output, the time CVs must be set to 0. The default is for pulses of 50 milliseconds to suit the CDU. I have tested the program with a computer simulation of a Lenz system. I don't actually have one myself. Would welcome anyone who can try the real thing.

MB.

Ciao Leggera e grazie del tuo intervento.
Ho letto il doc nel sito Merg ma quello che mi chiedo e se nella realt

[Fabio_C.]

Ho provato a programmare le cv nel modo indicato nella tabella (sia le CV da 513 che quelle da CV1)

Metto il dec sulla porta di programmazione della IB
Metto la modalit

[Fabio_C.]

Risolto

Grazie