Some further explanation is needed for this.

The m84 is actually a 8 port device with each port having individual capabilities.
It is actually an Additional Feature of the item that allows the the activation command of one port (e.g. 1Red) to cause a deactivation of an other(s) (i.e. 1Green)

The emphasis here is on "others" - note the plural , meaning none, one or more.
Note: to use a single port (toggle mode) - as well as changing the code for the port mode, you will also need to disable the turnoff mode of his mate

Within the CVs available, there is an additional CV for EACH of the eight ports that acts as MASK to indicate what additional devices to TURN OFF after you have turned on the primary port
The CV#s are #136 to #143 for ports 1(1Red) to 8(4Green) respectively.

The "bits" (named Right to Left for human convenience) of the value for the mask are weighted as such
- bit 1 = 1 = port 1 (1R)
- bit 2 = 2 = port 2 (1G)
- bit 3 = 4 = port 3 (2R)
- bit 4 = 8 = port 4 (2G)
- bit 5 = 16 = port 5 (3R
- bit 6 = 32 = port 6 (3G)
- bit 7 = 64 = port 7 (4R)
- bit 8 = 128 = port 8 (4G)

Thus , the factory default for port 1(1R) CV#136 is 2, meaning - when I press 1R, turn it ON AND turn OFF port2(1G)
Conversely the port 2(1G) CV#137 value is 1, meaning - when I press 1G, turn it ON AND turn OFF port1(1R)
...
...
for port 8(4G) CV#143 the value is 64, meaning - when I press 4G, turn it ON AND turn OFF port7(4R)



So now we have a feature - how might it be used?
One thought that comes to mind is within a fiddle yard, with 8 roads, each with a dead section. It is possible to set up the m84 so that a single button press would liven the relevant dead section AND make the other 7 dead/safe.
For example yard #4 (= 2G) uses CV#139 to determine the followup action. By setting this CV to a value of 247 ( 1(1)+2(2)+4(3)+16(5)+32(6)+64(7)+128(8) ) , the other 7 yards will be made safe.

An extension to this, is another feature of the m84 port that allows for a pulse, or minimum on time (mode 17). In the above scenario, by qualifying the port with a time for 10 seconds, the appropriate yard could be livened up long enough for a train to exit and then automatically return to a safe state.

As with other distributive processing, there is no feedback to the controller for it to display the actual state of the items ports correctly!

NOTEs:
- Refer to the m83 documentation for the CV No.s and the mode values, some do not work (Zoom/Mars) as they have no meaning for a on/off relay, however the blinks and flashes do.
- A qualification on the m83 documentation is that the period multiplier for the m84 is one-second (not 0.05 of a second) - thus a value of 1 means 1 second.


What can you imagine doing with these features on your layout?

Edited by user 27 February 2014 23:23:48(UTC)  | Reason: Not specified

I had been expecting some elaboration on this from Marklin, however I had hoped that it would be via an update to the original manuals (for both the m83 and m84) along with other needed clarification.

Sometimes Marklin have a story to tell but they are slow to recognize the fact that, not only will telling it display their prowess but it will reduce, if not eliminate, confusion.

So for those that are still asking the WHYs, here is some of my personal observations

Why M84 only? and not the M83
Firstly, the process in the document is the same for the m83 as for the m84!

IMHO, the reason for the specific m84 focus has to be related to the belated awareness that ...
a) the M84 Hobby signal ports were (mistakenly?) set to OFF by default and
b) that the CV# table for the M84 does not include reference to CV#38

Why is the 6021 process for these M8x units different from the Loco decoder process
I will go out on a limb here and give credit to Marklin for finding a POM (equivalent) mechanism that allows for the configuration of an individual M8x unit without having to un-wire all other units from the layout.
(Note: the DCC POM option/capability for the M8x has yet to be seen on Marklins CS2/MS2 so in fact this MM capability is ahead of the competition)

The FIRST important difference between the traditional 6021->LocoDecoder programming and the new document is step 3
3. Press a button on the Keyboard for the output to be changed (example: 1).
By adding the need to activate an address on the target unit - the configuration process will be started on that unit ONLY

My observations are thus...
This step does not need to be at step 3 as shown. I had worked out that performing it between step 1 and 2 was more convenient.
After further observation it appears that the last (MM accessory command) address will be used - even if that command was sent prior to the last power off.

So, the M8x units must be CONSTANTLY listening for any address and if it sees one of its own then, in addition to performing the required operation, it will prime itself just in case, sometime in the future a programming sequence comes along. If the unit detects an address that is not one of its own it will defuse the primed state and ignore any future attempt to enter the programming mode.

The SECOND important difference is with the closing steps - especially step 15
15. Press a button on the Keyboard for the output to be changed (example: 1).
Normally (on a decoder reconfigure) pressing the stop key (step 14) will end the process and drop the decoder out of programming mode. With the M8x devices it is important to "finalize" the process by performing this step - untill you do so the M8x will stay primed for programming.

The ramification of not doing this finalization step becomes clear if you are in the process of configuring multiple devices.
For example, if I had completed configuring module 1(1-4) up to step 14 and now wanted to do module 2(5-7) I would start the second units process by entering an address (for example 5) and then continue with the 6021 reset - entering the "80" and pressing reverse while pressing go.
HERES THE RUB - because I had not completed step 15 and tested one of the addresses (1-4), module 1 still thinks it is in programming mode and will respond, along with module 2, by entering the slow flash stage - awaiting a CV number.

As I mentioned above - this can even be observed after an extended power off - something in the M8x unit remembers that it is in programming state.

But WHY - I hear you cry ?
This is speculation ... but here goes ...
Because the 6021-Register programming sequence incorporates a couple of Power Off/ON cycles AND we want to select a specific module by the last used address, there is a need to retain the state within the m8x unit - at least for a short time. But of course if you retain a state across a power off/on, you have to provide a mechanism to reset that state. The designed way to do this is by activating one of its recognized addressed as soon as possible after you power off and power back on.


Peripheral comments
Because the 6021-Register programming sequence uses power off/on's, having an external power supply totally negates this and therefore programming can not be done with one connected. (THOUGHT! - maybe something for the 60822 to do?)

Not mentioned in the new document (but mentioned in the other 6021 programming document http://mediencms.maerkli...ogrammieren_mit_6021.pdf ) is the reminder that the 6021 does not like "00" so in order to enter a "0" value for a CV you make use of "80"

Just in case there are some newbies out there with regard to 6021 programing, when marklin say ...
1. Press the “Stop” and “Go” at the same time until “99” blinks in the display
This means press and hold the "Stop" and "Go" UNTIL THE DISPLAY GOES BLANK.
AFTER you release the keys , you will observe the "99" blink in the display.

The steps 6 and 9 references "the diode"
6. The diode on the M84 will blink ...
9. The diode .....
This "diode" is actually the pair of LEDs adjacent to the Red and Brown command wire terminals. When in programming mode they will both blink in unison.

The reference to "blink slowly" and "blink rapidly" are legacy terms and while representative in their description are wrong.
For the M8x units the slow blink (approximately once per second). the rapid blink is actually a "double blink" over the same period


.......................___________
|_____________________|...........| Blink

.......................___.....___
|_____________________|...|___|...| DoubleBlink

Edited by user 09 March 2014 21:54:18(UTC)  | Reason: Not specified

60821 now shipping

Name of product = Motor Control

Comments:
Purpose? When compared to a k84/m84 = unclear

The default port mode for a m83 is 18 , which results in a pulse to the solinoid (signal/turnout)
m83 port mode set to 17 is for "Minimum Switch Time" - allowing for running for a "longer" time but not continuous
Question: is mode=129 (continuous on) supported ??

There is no "max current per m83" specification available. This (500mA per portpair) implies a capacity of 2 Amps
But this ties in with a 66361/5 36VA (=2 Amps) so only one m83/m84 can be used in a chain.

No specification (other than Max=500mA) is given for the motor to be used. As Marklin do not have a motor to compare with some measurements are needed.

==========================================================================
ref
http://medienpdb.maerkli.../1/pdf/60821_betrieb.pdf

Connections for Motor Control and Required Settings
The motor control is connected to the terminal clips for turnouts on the m83 decoder. Maximum load for motor control is 500 milliamps.
The required CV settings for operation can only be adjusted in the DCC mode. When doing this bear in mind the operating instructions for the m83 decoder (Pages 20-21). The settings remain preserved and in effect in MM/fx.



CV-Settings: min - max
Switching Function Turnout, red = Value 17
Pulse Width (Regulating speed) = Value 1 -255
Period (Regulating time) = Value 50 - 200
Switching Function Turnout, green = Value 17
Pulse Width (Regulating speed) = Value 1 -255
Period (Regulating time) = Value 50 - 200
The CVs arrange themselves according to the turnout connections to which the motor control is connected. The rotational direction of the motor can be adapted by swapping the wires at the terminal clips for the motor control

(above image) Full BoM of 60821 product item as delivered
- 1 x ziplock plastic bag with lable
- - ziplock not sealed
- - Contents noted as "4 x 197537 Turnout motor front end circuit board"
- - (at the time of writing, this "single item" was not available on the "Marklin Shop" as an item or spare part)
- 4 x "Turnout motor front end circuit boards"
- - note: the third item shown, had its heat shrink removed after delivery.
- 1 x Instructions (as per downloadable) p/n 197540 with date code 0514
- 1 x Warranty Card - 608067 with date code 0413


(above image) Closeup of a single circuit board with "protective heat shrink removed"


(above image) Perspective image showing 4 of the circuit board installed/connected to a m83 (60831)

Edited by user 10 October 2014 21:50:46(UTC)  | Reason: Not specified