Programming In "Operations Mode" (On-The-Main "Pom"); Decoder-Id, Load-Code, Decoder-Type And Sw-Version; The Vehicle Address(Es) In Dcc Mode; Sw-Version 35.0 - ZIMO MX638 Series Instruction Manual

Non-Sound Decoder MX600 - MX638 and Sound Decoder MX640 - MX659
Programming in "Operational Mode" (on-the-main "PoM")
3.2
According to the current NMRA DCC standards, it should only be possible to program and read CV's
on the main track, but not assign new vehicle addresses. However, certain DCC systems (among
them ZIMO beginning with the system generation MX10/MX32) will allow addresses to be modified on
the main track with the help of bidirectional communication.
All ZIMO decoders are equipped with bidirectional communication ("RailCom") and can therefore
(with a corresponding DCC system such as ZIMO MX31ZL and all devices of the new MX10/MX32
generation) read, program and acknowledge successful CV programming steps in operations mode
(on the main track). This requires RailCom to be activated, which is the case if the following CV's are
set as:
CV #29, Bit 3 = 1
This is usually the default setting, except in certain sound projects or OEM CV sets, where they need to
be set prior to all other programming.
CV Denomination Range
#28 RailCom Configuration 0 - 3
Basic settings
#29 0 - 63
3.3

Decoder-ID, Load-Code, Decoder-Type and SW-Version

CV Denomination Range
Decoder-ID
Also identifies decoder
#250,
type with
#251,
Read only
#252,
CV #250 = Decoder
#253
type
(see chapter 2)
CV #28 = 3
AND
(usually CV #29 = 14)
Default Description
Bit 0 - RailCom Channel 1 (Broadcast)
0 = OFF 1 = ON
3
Bit 1 - RailCom Channel 2 (Data)
0 = OFF 1 = ON
Bit 0 - Train direction:
0 = normal, 1 = reversed
14 =
Bit 1 - Number of speed steps:
0 = 14, 1 = 28
1
0000 110
Bit 2 - DC operation (analog): *)
Bit 3 = 1
0 = disabled 1 = enabled
("RailCom" is
Bit 3 - RailCom („bidirectional communication")
switched on)
and
0 = deactivated 1 = activated
Bits
Bit 4 - Individual speed table:
1 & 2 = 1
0 = off, CV # 2, 5 and 6 are active.
(28 or 128
1 = on, according to CV 's # 67 – 94
speed steps
and DC op-
Bit 5 - Decoder address:
eration ena-
0 = primary address as per CV #1
bled)
1 = ext. address as per CV #17&18
Default Description
The decoder ID (serial number) is automatically entered
during production: The first Byte (CV #250) denotes the
decoder type; the three other Bytes contain the serial
number.
-
The decoder ID is primarily used for automatic address
assignment when an engine is placed on the layout
track (future function) as well is in conjunction with the
"load code" for "coded" sound projects (see CV #260-
CV Denomination Range Default Description
"Load code"
#260,
for
#261,
-
#262, "coded" sound projects
#263
Manufacturer ID
Read only
and
Reading out
HARD RESET
the decoder
with CV #8 = 8
always shows
or CV #8 = 0
"145", which is
ZIMO's
#8
assigned
or
( = ZIMO)
number.
Configure decoders as "C-type" or
For pseudo
"D-type" (MX634 only):
programming
see "Descrip-
MX634D:
tion" column
FO3,FO4 = normal outputs
on the right.
MX634C:
FO3,FO4 = logic level outputs
Activate Special CV Set
SW-Version Number
Read only
Also see CV #65 for
Sub-Version Number
Pseudo-
#7
and
programming
see explana-
special procedures for pro-
tion to the right
gramming with "Lokmaus-2"
and other "low level" sys-
tems
SW-
Sub-Version Number
#65 Read only
Also see CV #7 for
main version number

3.4 The vehicle address(es) in DCC mode

Decoders are usually delivered with default address 3 (CV #1 = 3), for the DCC as well as the MM
(Märklin Motorola) format. All aspects of operations are possible with this address but it is recom-
mended to change to a different address as soon as possible.
Page 15
263).
New ZIMO sound decoders can be ordered for a small
fee with the "load code" pre-installed, which entitles the
user to install "coded" sound projects of a selected
-
sound bundle.
The load code can also be purchased and installed by
the user at a later date: see www.zimo.at.
Reading out this CV always result in "145"
("10010001"), the number issued for ZIMO by the
NMRA.
This CV is also used for various resetting processes
with the help of Pseudo-Programming.
Pseudo-Programming means that the entered value is not really stored, but
rather used to start a defined action.
145 CV #8 = "3"  Converting a MX634D to MX634C
CV #8 = "4"  Converting a MX634C to MX634D

CV #8 = "8"
HARD RESET(NMRA standard);
all CV's return to the last active CV set or sound
project, or the default values listed in this CV table if
no such set was active before.

CV #8 = "9"
HARD RESET for LGB-MZS operation
(14 speed steps, pulse chain commands).
Further options: see chapter "CV Sets"!
This CV holds the firmware version number currently in
the decoder.
With the help of "Pseudo-programming" it also helps to
program decoders with DCC systems of limited range:
Ones digit = 1: Subsequent programming value + 100
-
= 2:
Tens digit = 1: Subsequent CV number
= 2:
etc. = 9:
Hundreds digit = 0: Revaluation applies only once
... until power-off
= 1:
This CV indicates a possible sub-version number of a
main version noted in CV #7.
-
The entire SW version number is thus composed of
CV #7 and #65 (i.e. 28.15).
... + 200
+ 100
... + 200
... + 900