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Command

Syntax

Parameters

Description

Zone Power

Zxxy<cr>

xx=zone, valid range 01-
16
y=state, 1=on, 0=off

Similar to pushing the power button on a 
zones keypad. This will power up/down 
the specified zone 

Zone Power 
Query

Zxx?<cr>

xx=zone,  
valid range 01-16

Ask the C-816 if a zone is on or off. The 
C-816 will respond with Zxx1 for zone 
on, and Zxx0 for zone off. xx is the zone 
number queried.

All off

ZA0<cr>

0=off

Turn all zones  off. If an  Expansion 
Controller is connected, it's zones will 
also be turned off. 

All on

ZA1<cr>

1=0n

Turn all zones on. They will be set to 
their last used source and volume.

Source Select

Sxxy<cr>

xx=zone, valid range 01-
16 
y=input, range T, 1-6 

Similar to selecting a source on a keypad. 
T=tuner, 1-6=inputs 1-6. Inputs 5 and 6 
correspond to expansion slots 1 and 2.

Source Query

Sxx?<cr>

xx=zone, valid range 01-
16

Ask the C-816 what input a zone is on. 
The C-816 will respond with Sxxy, where 
xx is the zone number queried and y the 
input it is set to. 

Function

Fxxyy<cr>

xx=zone, valid range 01-
16
yy=function:
on keypad: SU, SD, RW, 
FW, ST, PS. Additional 
on IR remote: GU, IN, 
EX, MN, CU, CD, NU, 
NR, ND, NL, EN, N1, 
N2, N3, N4, N5, N6, 
N7, N8, N9, N0, TR, DI.

Similar to pressing a function on a 
keypad or remote. SU=scroll up, 
SD=scroll down,  RW=rewind, FF=fast 
forward, ST=star, PS=pause.
R-3 Remote only: GU=guide, IN=info, 
EX=exit, MN=menu, CU=ch up, CD=ch 
down, NU=nav up, NR=nav right, 
ND=nav down, NL=nav left, EN=enter, 
N1-N0=numeric buttons, TR=track, 
DI=disc.

Volume 
Absolute

Vxxyy<cr>

xx=zone, valid range 01-
16 
yy= volume, range 00-
99

Set an absolute volume level in a C-816 
zone. NOTE: yy number is in dB so 00 is 
the loudest at 0dB and 99 is the softest at 
-99dB. 

Volume Query

Vxx?<cr>

xx=zone, valid range 01-
16

Ask the C-816 what volume a zone is set 
to. The C-816 will respond with Vxxyy 
where xx is the zone number, (01-16) and 
yy is the volume of that zone (00-99)  = 
0dB to -99dB

Volume Step

Vxx++<cr> 
or  
Vxx- -<cr> 

xx=zone, valid range 01-
16

Increase or decrease the volume of a zone 
by one step (1dB). 

1.0 03/23/2011

3

Summary of Contents for C-612

Page 1: ...Nexus Audio Systems C 816 MULTI ROOM CONTROLLER RS232 Command Reference 1 0 03 23 2011 1...

Page 2: ...rt on the C 816 uses a female DB9 connector wired in a DTE configuration Tx transmit pin 2 Rx receive pin 3 Ground pin 5 Communication settings are 19200 baud 8 bits no parity no handshake Figure 1 RS...

Page 3: ...d with Sxxy where xx is the zone number queried and y the input it is set to Function Fxxyy cr xx zone valid range 01 16 yy function on keypad SU SD RW FW ST PS Additional on IR remote GU IN EX MN CU...

Page 4: ...down the current band FM or AM and stop on the next station Slave tuner control SL_ Prepend to tuner commands above Allows control of tuner in slave chassis if one is attached Query tuner preset PRE...

Page 5: ...r string describing the name of the queried source Set source name SNxxcccc cr xx source range 01 07 cccc a character string max 10 characters Sets the name of source xx to cccc Example to change the...

Page 6: ...nt to the controller this timer will be reset If no iPod related commands are received for 32 seconds a reply of Slot1 timeout will be returned and the RS232 port loses control of the iPod Example I_S...

Page 7: ...unt For example using a category type of two artist a starting index of zero and a record count of five the iPod will return the names of the first five artists in the database Example I_RETCATDBREC 0...

Page 8: ...ample I_GETINDPLYTRTIT 12 cr Track1 Walking On Broken Glass CR I_GETINDPLYTRART Requests the currently play track artist The artist name will be returned Example I_GETINDPLYTRART 12 cr Artist1 Annie L...

Page 9: ...ums Example I_GETSHUF cr Shuffle off CR I_SETSHUF Sets the shuffle state of the iPod Use 00 to turn shuffle off 01 to shuffle tracks or 02 to shuffle albums Example I_SETSHUF 01 cr Shuffle albums OK C...

Page 10: ...mmand enables reporting of the artist album and track names out of the RS232 port This info will be reported every time the track changes without having to request it Each item is reported with a fiel...

Page 11: ...DBREC 02 0 5 Category Artist start index 0 read count 5 AC DC Aerosmith Al Stewart Alannah Myles Alice Cooper I_RETCATDBREC 02 5 3 Category Artist start index 5 read count 3 Alison Krauss Annie Lennox...

Page 12: ...va I_GETNUMCATDBREC 05 Category Tracks 4 matching records 4 I_RETCATDBREC 05 0 4 Category Tracks start index 0 read count 4 Why Walking On Broken Glass Precious Legend In My Livingroom I_SELDBREC 05 0...

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