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====== Input/Output (IO) Module CFLink Protocol ======

The following documentation describes the CFLink protocol for modular IO devices.

===== Common Definitions =====

==== Port Modes ====

Throughout this document, the configuration and status of each port <MODE> and it's associated <STATE> refers to the following possibilities:

  * **<MODE>** = Single uppercase char:
    * ''D'' = ''D''ry contact input (Default mode), <STATE> = ''0'' for Open, 1 for Closed.
    * ''R'' = ''R''esistance reading input, <STATE> = ''000''-''100'' (0 to 10,000 Ohms in 100 Ohm increments)
    * ''A'' = ''A''nalog Voltage reading input, <STATE> = ''000''-''100'' (00.0 to 10.0 Volts DC in 0.1 Volt increments)
    * ''V'' = Digital Voltage reading input, <STATE> = ''0'' for voltage below threshold, ''1'' for voltage equal to or above threshold
    * ''S'' = Video Sensing input, <STATE> = ''0'' for no video sensed, ''1'' for video sensed.
    * ''E'' = External relay control output, 0-24V DC (external power supply required), <STATE> = ''0'' for OFF, ''1'' for ON.
    * ''L'' = LED output (1mA), <STATE> = ''0'' for OFF, ''1'' for ON.

===== Queries =====

==== STA - Query Status ====

The ''STA'' (Status) query returns the status of all IO ports in a single module.

=== Data ===
<sxh cflink; light: true>

> [F2]<ID>[F3]QIOXSTA[F4]<MODULE>[F5][F5]

</sxh>
  * **<MODULE>** = The module number to request the status of. 2 chars, uppercase 'M' followed by the module number.
    * eg. ''M1'' = Module 1, ''M4'' = Module 4.

=== Reply ===

<sxh cflink; light: true>
< [F2]<ID>[F3]RIOXSTA[F4]<MODULE>|<IODATA>[F5][F5]
</sxh>

  * **<IODATA>** = For each IO port in the module, the port status is returned in ''P##:<MODE>:<STATE>'' format.
    * **<MODE>** = Single uppercase char. Refer to Common Definitions - Port Modes for more information on the possible modes and states.

=== Example ===

<sxh cflink; light: true>
// Query the state of IO ports in Module 2 of a modular device on CFLink ID [04]
> [F2][04][F3]QIOXSTA[F4]M2[F5][F5]
// Reply, Module has 8 IO ports
< [F2][04][F3]RIOXSTA[F4]M2|P01:D:0|P02:D:1|P03:R:010|P04:V:125|P05:E:0|P06:L:1|P07:D:0|P08:S:1[F5][F5]
// Port 1 = Dry contact, Off
// Port 2 = Dry contact, On
// Port 3 = Resistence, 1000 Ohm reading
// Port 4 = Voltage, 12.5V reading
// Port 5 = External relay control, Off
// Port 6 = LED ouput, On
// Port 7 = Dry contact, Off
// Port 8 = Video Sense, video signal present.

</sxh>

=== Error ===
  * 004 = Invalid Module Number

==== PRT - Query Port Settings ====

The ''PRT'' (Port) query returns the configuration for all IO ports in a single module.

=== Data ===

<sxh cflink; light: true>
> [F2]<ID>[F3]QIOXPRT[F4]<MODULE>[F5][F5]

</sxh>

  * **<MODULE>** = The module number to request the port configuration of. 2 chars, uppercase 'M' followed by the module number.
    * eg. ''M1'' = Module 1, ''M4'' = Module 4.

=== Reply ===

<sxh cflink; light: true>
< [F2]<ID>[F3]RIOXPRT[F4]<MODULE>|<PORT_CONFIG>[F5][F5]

</sxh>

  * **<PORT_CONFIG>** = For each IO port in the module, the port configuration is returned in ''P##:<MODE>:<MIN_CHANGE>:<POWER_ON_STATE>'' format.
    * **<MODE>** = Single uppercase char. Refer to Common Definitions - Port Modes for more information on the possible modes and states.
    * **<MIN_CHANGE>** = The minimum change the port must read before sending a notification message.
      * ''0'' means reporting on change is disabled, and on change reporting can be disabled on a module level as well.
      * ''0'' (zero) is always returned for ports in modes D, E and L.
    * **<POWERONSTATE>** = The state the port will be in when the unit is powered up.
      * ''0'' (zero) is always returned for ports in modes D, R and V.

=== Example ===

<sxh cflink; light: true>
// Query the configuration of IO ports in Module 1 of a modular device on CFLink ID [04]
> [F2][04][F3]QIOXPRT[F4]M1[F5][F5]
// Reply, Module has 8 IO ports
< [F2][04][F3]RIOXPRT[F4]M1|P01:D:0:0|P02:D:0:0|P03:R:15:0|P04:V:12:0|P05:E:0:0|P06:L:0:1|P07:D:0:0|P08:D:0:0[F5][F5]
// Port 1 = Dry contact
// Port 2 = Dry contact
// Port 3 = Resistence, 1500 Ohm minimum change
// Port 4 = Voltage, 1.2 V minimum change
// Port 5 = External relay control, Power On State = Off
// Port 6 = LED ouput, Power On State = On
// Port 7 = Dry contact
// Port 8 = Dry contact

</sxh>

=== Error ===

  * 004 = Invalid Module Number

==== CFG - Query Configuration ====

The ''CFG'' (Configuration) query returns the configuration of a single IO module.

=== Data ===

<sxh cflink; light: true>
> [F2]<ID>[F3]QIOXCFG[F4]<MODULE>[F5][F5]

</sxh>
  * **<MODULE>** = The module number to request the module configuration of. 2 chars, uppercase 'M' followed by the module number.
    * eg. ''M1'' = Module 1, ''M4'' = Module 4.

=== Reply ===

<sxh cflink; light: true>
< [F2]<ID>[F3]RIOXCFG[F4]<MODULE>:<ENABLED>:<REPORT_ON_CHANGE>:<REPORT_INTERVAL>[F5][F5]

</sxh>

  * **<ENABLED>** = This reports if the module is enabled or disabled for input reading (and hence disable reporting notifications). Disabling a module is great for trouble shooting to silence the module on the CFLink bus without having to physically unplug it. Single digit, ''0'' = disabled, ''1'' = enabled.
  * **<REPORTONCHANGE>** = This reports if the module allows for any IO ports to force a status notification when its input value changes.
    * The minimum change setting for a port must be reached before any notification will be sent.
    * If this is disabled, all port minimum change settings will be ignored.
    * ''0'' = Disable report on change, ''1'' = Enable report on change.
  * **<REPORT_INTERVAL>** = The interval at which the module will report it's status. 5 digits, representing 0 - 9999.9 seconds (100ms increments).
    * ''00000'' = Module will not report on any interval (disabled).
    * ''00001'' = Module will report every 0000.1 seconds (100ms).
    * ''00600'' = Module will report every minute.
    * ''36000'' = Module will report every hour.
    * ''99999'' = Module will report every 9999.9 seconds (2h46m39s900ms or 9,999,900ms)
    * There is a [[http://www.unitarium.com/time-calculator|great online calculator here]] for converting this value into h:m:s (simply enter ::9999.9 to see the max range for example)

=== Example ===

<sxh cflink; light: true>
// Query the configuration of Module 1 of a modular device on CFLink ID [04]
> [F2][04][F3]QIOXCFG[F4]M1[F5][F5]
// Reply
< [F2][04][F3]RIOXCFG[F4]M1:1:1:36000[F5][F5]
// IO module is enabled, report on change is enabled, reports status every hour.

</sxh> 

=== Error ===

  * 004 = Invalid Module Number

===== Configuration Messages =====

==== PRT - Configure Port Settings ====

The ''PRT'' (Port) command is used to configure the settings of all IO ports in one or more modules.\\
If some IO port configurations are to remain unchanged, simply omit them from the message.

=== Data ===

<sxh cflink; light: true>
> [F2]<ID>[F3]CIOXPRT[F4]<MODULE>|<PORT_CONFIG>[F5][F5]

</sxh>
  * **<PORT_CONFIG>** = See the definition under the ''PRT'' Query for more details.

=== Reply ===

The changes take affect immediately. See the ''PRT'' Query Reply for more details.

=== Example ===

<sxh cflink; light: true>
// Set IO ports for module 1 in a modular device on CFLink ID [05] as follows:
// Port 1 = Dry contact
// Port 2 = Dry contact
// Port 3 = Resistence, 1500 Ohm minimum change
// Port 4 = Voltage, 1.2 V minimum change
// Port 5 = External relay control, Power On State = Off
// Port 6 = LED ouput, Power On State = On
// Port 7 = Dry contact
// Port 8 = Dry contact
> [F2][05][F3]CIOXPRT[F4]M1|P01:D:0:0|P02:D:0:0|P03:R:15:0|P04:V:12:0|P05:E:0:0|P06:L:0:1|P07:D:0:0|P08:D:0:0[F5][F5]
// Reply
< [F2][05][F3]RIOXPRT[F4]M1|P01:D:0:0|P02:D:0:0|P03:R:15:0|P04:V:12:0|P05:E:0:0|P06:L:0:1|P07:D:0:0|P08:D:0:0[F5][F5]
</sxh>

=== Error ===

  * 003 = Invalid Port Number
  * 004 = Invalid Module Number
  * 425 = Invalid IO Port Mode
  * 426 = Invalid IO Port Minimum Change
  * 427 = Invalid IO Port Power On State

==== CFG - Configure Module ====

The ''CFG'' (Configure) command is used to configure the module settings.

=== Data ===

<sxh cflink; light: true>
> [F2]<ID>[F3]CIOXCFG[F4]<MODULE>:<ENABLED>:<REPORT_ON_CHANGE>:<REPORT_INTERVAL>[F5][F5]
</sxh>

  * See the definition under the ''CFG'' Query for more details.

=== Reply ===

The changes take affect immediately. See the ''CFG'' Query Reply for more details.

=== Example ===

<sxh cflink; light: true>
// Set module 1 in a modular device on CFLink ID [05] to be setup as follows:
// Data reading enabled, Report on change enabled, report on interval every minute.
> [F2][05][F3]CIOXCFG[F4]M1:1:1:00600[F5][F5]
// Reply
< [F2][05][F3]RIOXCFG[F4]M1:1:1:00600[F5][F5]

</sxh>

=== Error ===

  * 004 = Invalid Module Number
  * 429 = Invalid IO Reporting Interval

===== Transmission Messages =====

==== SET - Set IO States ====

The ''SET'' command is used to set the state (on or off) of one or more IO ports across one or more modules.\\
The port must be configured to any of the following modes for SET to work.

  * ''E'' = External relay control
  * ''L'' = LED output
If any other port mode is configured, the command will ignore that port.

=== Data ===

<sxh cflink; light: true>
> [F2]<ID>[F3]TIOXSET[F4]<MODULE>|<OUTPUTDATA>[F5][F5]

</sxh>

  * **<MODULE>** = The module number to change the state of. 2 chars, uppercase 'M' followed by the module number.
    * eg. ''M1'' = Module 1, ''M4'' = Module 4.
  * **<OUTPUTDATA>** = For each IO port in the module, the port status is written in ''P##:<STATE>'' format.
    * **<STATE>** = Single char:
      * ''0'' = Output off
      * ''1'' = Output on
      * ''T'' = Toggle Output

=== Reply ===

<sxh cflink; light: true>
< [F2]<ID>[F3]RIOXSTA[F4]<MODULE>|<IODATA>[F5][F5]

</sxh>

See the ''STA'' Query Reply for more details on the reply format.

Note that the reply data will contain relay data for every IO module in the modular base device.

=== Example ===

<sxh cflink; light: true>
// Set ports 5 and 6 on in module 2.
// Modular base unit on CFLink ID [04].
> [F2][04][F3]TIOXSET[F4]M2|P05:1|P06:1[F5][F5]
// Reply
< [F2][04][F3]RIOXSTA[F4]M2|P01:D:0|P02:D:1|P03:R:010|P04:V:125|P05:E:1|P06:L:1|P07:D:0|P08:D:0[F5][F5]

</sxh>

=== Error ===

  * 003 = Invalid Port Number
  * 004 = Invalid Module Nsdumber
  * 428 = Invalid IO State

===== Notifications =====

==== STA - Status Notification ====

The ''STA'' (Status) notification returns the status of all IO ports in a single module.\\
The notification can be sent either on change or on interval, depending on how the IO Module is configured.

=== Data ===

<sxh cflink; light: true>
< [F2]<ID>[F3]RIOXSTA[F4]<MODULE>|<IODATA>[F5][F5]

</sxh>

  * **<IODATA>** = For each IO port in the module, the port status is returned in ''P##:<MODE>:<STATE>'' format.
  * **<MODE>** = Single uppercase char. Refer to Common Definitions - Port Modes for more information on the possible modes and states.

=== Example ===

<sxh cflink; light: true>
// Notification from IO module with 8 IO ports, in a MOD4 on CFLink ID [04]
< [F2][04][F3]RIOXSTA[F4]M2|P01:D:0|P02:D:1|P03:R:010|P04:V:125|P05:E:0|P06:L:1|P07:D:0|P08:D:0[F5][F5]
// Port 1 = Dry contact, Off
// Port 2 = Dry contact, On
// Port 3 = Resistence, 1000 Ohm reading
// Port 4 = Voltage, 12.5V reading
// Port 5 = External relay control, Off
// Port 6 = LED ouput, On
// Port 7 = Dry contact, Off
// Port 8 = Dry contact, Off
</sxh>

==== CHA - Change Notification ====

The ''CHA'' (Change) notification returns the status of only a single port that has changed state, from a single module.\\
The notification is only sent when the status changes more than the 'minimum change' property, depending on how the IO Module is configured.

=== Data ===

<sxh cflink; light: true>
< [F2]<ID>[F3]RIOXCHA[F4]<MODULE>|<IODATA>[F5][F5]

</sxh>

  * **<IODATA>** = The port status is returned in ''P##:<MODE>:<STATE>'' format.
  * **<MODE>** = Single uppercase char. Refer to Common Definitions - Port Modes for more information on the possible modes and states.

=== Example ===

<sxh cflink; light: true>
// Notification from IO module when a port changes state, in a MOD4 on CFLink ID [04]
< [F2][04][F3]RIOXCHA[F4]M2|P02:D:1[F5][F5]
// Module = 2
// Port 2 = Dry contact, On
</sxh>
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