Editing IONI connector pinout

IONI card edge connector fits into a standard PCI-Express 8X socket connector. 

==Pinout==
[[File:IONIpinoutfront.PNG|thumb|400px|Location of pins B1 to B49. A1 to A49 are on same order except on the opposite side of board.]][[File:Ionipinout.PNG|thumb|400px|IONI pin-out]]

{| class="wikitable"
|-
! Color
|-
| class="powpin"|Power pin
|-
| class="inpin"|Input pin
|-
| class="outpin"|Output pin
|-
| class="mixedpin"|Mixed or other purpose
|}

The pinout of IONI drive is provided in the following table.
;I/O and low voltage signals
{| class="wikitable"
! Pin!!Signal name
|rowspan=18 class="tableseparator"|
!Pin!!Signal name
|-
| A1||class="powpin"|GND||B1||class="powpin"|5V_IN
|-
| A2||RS485_A||B2||RS485_B
|-
| A3||ADDRSEL1||B3||ADDRSEL2
|-
| A4||class="inpin"|HSIN1||B4||class="inpin"|HSIN2
|-
| A5||class="inpin"|ANAIN-||B5||class="inpin"|ANAIN+
|-
| A6||class="inpin"|GPI1||B6||class="inpin"|GPI2
|-
| A7||class="inpin"|GPI3||B7||class="inpin"|GPI4
|-
| A8||class="outpin"|GPO1||B8||class="outpin"|GPO2
|-
| A9||class="outpin"|GPO3||B9||class="outpin"|GPO4
|-
| A10||class="outpin"|GPO5||B10||class="inpin"|GPI5
|-
| A11||class="outpin"|REGEN_OUT||B11||class="outpin"|MECH_BRAKE_OUT
|-
| A12||class="inpin"|ENABLE_IN||B12||Reserved/NC
|-
| A13||class="inpin"|STO2||B13||class="inpin"|HALL_W
|-
| A14||class="inpin"|HALL_V||B14||class="inpin"|HALL_U
|-
| A15||class="inpin"|A-||B15||class="inpin"|A+
|-
| A16||class="inpin"|B-||B16||class="inpin"|B+
|-
| A17||class="inpin"|C-||B17||class="inpin"|C+
|}

;Power signals
{| class="wikitable"
! Pin!!Signal name
|rowspan=11 class="tableseparator"|
!Pin!!Signal name
|-
| A18-A22||class="powpin"|GND||B18||Not connected
|-
| A23||Not connected||B19-B22||class="powpin"|HV+
|-
| A24-A27||class="outpin"|PHASE1||B23||Not connected
|-
| A28||Not connected||B24-B27||class="outpin"|PHASE2
|-
| A29-A37||class="outpin"|PHASE3||B28||Not connected
|-
| A38||Not connected||B29-B37||class="outpin"|PHASE4
|-
| A39-A43||class="outpin"|PHASE1||B38||Not connected
|-
| A44||Not connected||B39-B43||class="outpin"|PHASE2
|-
| A45-A49||class="powpin"|GND||B44||Not connected
|-
| ||||B45-B49||class="powpin"|HV+
|}
Note 1: pins marked as ''Not connected'' are left empty for to make larger clearance for high voltage signals. Leave these pins unconnected on motherboard designs.

Note 2: Each power signal is present in two pin groups (internally parallel) and these signals should be wired parallel on motherboard.

==Signal assignment==
===General purpose I/O (GPI/GPO)===
The table below summarizes the default functions for GPIO pins. 
{{tip|Connecting GPI/GPO's are not mandatory. All of the same functions may be also accessed via [[SimpleMotion V2]] interface.}}
{|  class="wikitable"
! Signal name!!Function!!Used for!!Remarks
|-
| GPI1|| Home switch || Homing reference switch (optional), can also disable homing, or use [[Hard-stop homing]] without switch || Note <sup>1</sup>
|-
| GPI2|| Enable positive feed|| Axis positive direction end limit switch (optional)||Normally closed switch. When switch is open, motion/force in positive direction is prevented. <sup>1</sup>
|-
| GPI3|| Enable negative feed|| Axis negative direction end limit switch (optional)||Normally closed switch. When switch is open, motion/force in negative direction is prevented. <sup>1</sup>
|-
| GPI4|| Clear faults || Rising logic edge on this pin will clear fault state of drive || In IONICUBE mode, also rising edge of enable signal will clear faults.
|-
| GPI5|| Start homing || Rising logic edge on this pin will start homing if homing is enabled ||
|-
| GPO1|| Servo ready  || Use to indicate [[controller]] that drive is ready|| Logic 1 when drive has been initialized, enabled and ready to follow [[setpoint]] commands. If homing is enabled, then servo ready will be logic 1 after homing is successfully completed.
|-
| GPO2|| Tracking error warning || Use to indicate [[controller]] when drive is having difficulties following the [[setpoint]] before a tracking fault occurs || Logic 1 when tracking error (position or velocity, depending on [[Control modes|control mode]]) is greater than 1/8 of configured fault trigger level.
|-
| GPO3|| Fault state (active low) || Use to indicate [[controller]] that drive is stopped due to fault state || In IONICUBE mode GPO3 goes logic 0 after when enable signal is set low (for [[Mach3]] compatibility). GPO3 is open drain type to allow [[wired and connection]].
|-
| GPO4|| 2-way travel allowed || Use to indicate [[controller]] when axis is allowed to move in both directions (i.e. any limit switches not hit or axis lies within an optional homing defined limited travel range) || 
|-
| GPO5|| Reserved ||
|}
<sup>1</sup>) Connect switch between GND and GPIn pin

===Setpoint signals===
{{Template:IONI setpoint signals}}

===Feedback device signals===
{| class="wikitable"
|-
! Signal name # !!  Electrical type (in most feedback device modes) || Alternate electrical type (in some feedback device modes) || Connection with various feedback devices
|-
| HALL_W|| colspan=2 |Digital input W ||  Hall sensor input, phase W 
|-
| HALL_V|| colspan=2 |Digital input V  ||Hall sensor input, phase V
|-
| HALL_U|| colspan=2 |Digital input U || Hall sensor input, phase U 
|-
| A-||Differential input A-|| Analog input A-||rowspan=2|Quadrature encoder (A channel)/SinCos A
|-
| A+||Differential input A+|| Analog input A+
|-
| B-||Differential input B-|| Analog input B+||rowspan=2|Quadrature encoder (B channel)/SinCos B
|-
| B+||Differential input B+|| Analog input B-
|-
|  C-||colspan=2 |Differential input C- ||rowspan=2|Quadrature encoder index channel (Z channel)
|-
|  C+||colspan=2 |Differential input C+
|}
{{info|In case of single-ended encoder, connect encoder's A, B, Z only to drive's A+, B+ and C+ and leave drive's A-, B- and C- unconnected.}}
{{info|With differential Hall sensor (which provides U+, U-, V+, V-, W+ and W-, connect only sensor's U+, V+ and W+ to drive's HALL_U/V/W. }}
{{info|Never connect sensor negative outputs (A-/B-/C-/U-/V-/W-) to GND. Connect them to drive's A-/B-/C- or leave unconnected.}}
{{tip|Feedback devices with [[differential signaling]] may use varying naming schemes of signal pairs. For example differential signal X (which contains two electrical wires) may be denoted as: X+ and X-, or X and \X or X and {{overline|X}}. In this Wiki we mark them X+ and X-. Some Fanuc encoders have quadrature signals named as PCA, /PCA, PCB, /PCB, PCZ and /PCZ which are equivalent to A, B and Z signal pairs.}}

===Other signals===
{|  class="wikitable"
! Signal name!!Function!!Used for!!Remarks
|-
| REGEN_OUT|| Regenerative resistor control output || Use to control optional regenerative resistor to prevent excessive voltage generation in [[HV DC bus]] during motor deceleration. || A buffer circuit is needed for resistor, such as a logic level MOSFET. See example schematic [[Media:Regen drive.png|here]].
|-
| MECH_BRAKE_OUT ||Mechanical holding brake control output ||Use to control optional holding brake of motor ||A buffer circuit is needed to drive a solenoid brake, such as a logic level MOSFET. See example schematic [[Media:Regen drive.png|here]].
|-
|ENABLE_IN||Drive enable input signal (always required) ||Use to enable drive and allow motor to initialize and operate||Accepts up to 24V voltage level, but works also with 3V level signal
|-
|STO2||[[Safe torque off]] input signal (always required)||Use to allow motor to produce torque (activate power stage) ||Accepts up to 24V voltage level, but works also with 5V level signal. STO is inactive (allows torque) when logic high is supplied.
|}
==Electrical ratings==
{|  class="wikitable"
! Signal names!!Allowed input voltages/output voltage!!Internal input/output impedance (Ω)!!Internal pull impedance (Ω)
|-
| 5V_IN||5V +/-10%||-||-
|-
| HV+||0 – 55 V||-||-
|-
| RS485_A/B||RS485 serial bus, 2.7-5.5V signal level||>10k||-
|-
| ADDRSEL1, ADDRSEL2||External address setting pull-down resistors to ground (minimum 1 kΩ). See chapter ''Selecting device address'' below.||-||2.2k pull-up
|-
| HSIN1, HSIN2||Logic low -0.3-1.0V, logic high 2.7-5.5V||-||2.2k pull-up
|-
| ANAIN-, ANAIN+||+/- 11V||8k||-
|-
| GPI1...GPI4||Logic low -0.3-1.0V, logic high 2.7-5.5V||- ||2.2k pull-up
|-
| GPI5||Logic low -0.3-1.0V, logic high 2.7-5.5V||- ||~20-50k pull-up
|-
| GPO1,2,4,5||Logic low 0V, logic high 3.3V||220||-
|-
| GPO3||Depends on Electrical interface [[CEI]] parameter: In IONICUBE mode it is an open drain output, pulled to 0V with 220 ohm impedance or pulled to 3.3V with pull-up (allow [[wired and connection]] of multiple drives). In other modes it is push-pull output (like GPO1,2,4,5) ||220||~20-50k pull-up
|-
| MECH_BRAKE_OUT||Logic low 0V, logic high 3.3V||220||-
|-
| REGEN_OUT||Logic low 0V, logic high 3.3V||220||-
|-
| ENABLE_IN||Logic low -0.3-1.0V, logic high 2.7-26V||5k||10k pull-down
|-
| STO2||Logic low -0.3-2.0V, logic high 4.5-26V||8k||20k pull-down
|-
| HALL_U/V/W||Logic low -0.3-1.0V, logic high 2.7-5.5V||- ||2.2k
|-
| A/B/C+ ||RS422 receiver, 2.7-5.5V signal level||- ||2.2k
|-
| A/B/C-||RS422 receiver, 2.7-5.5V signal level|| - ||1.1k pull to 2.5V
|}

==Electrical interface modes (software selectable)==
IONI supports various function mappings to I/O signals and is selectable through [[Granity]] [[CEI|CEI Electrical interface parameter]]. The differences between modes are:

{| class="wikitable"
|-
! Mode !! Description !! Effects 
|-
| Standard || The default mode || I/O assignments as described in pinout
|-
| IONICUBE || Mode for [[IONICUBE]] that is compatible with parallel port CNC [[controller]]s such as  [[Mach3]] and [[LinuxCNC]] software. 

Not recommended with [[IONICUBE 1X]] as GPO3/fault output will not work then. 
|| 
* In addition to rising edge of GPI4, also rising edge on Enable will clear fault state. In standard mode Enable input will not clear faults.
* GPO3 (fault state) output will go logic low after Enable signal goes low. In standard mode GPO3 stays high until faults are cleared.
* GPO3 is open drain output to allow [[Wired and connection]] of multiple fault outputs of multiple drives
|-
| IONIZER || Not yet implemented, do not use || -
|}
==Selecting device address==
When accessing drive through [[SimpleMotion V2]] bus, each device in the bus should be assigned to different address between 1 to 32. Device address is a sum of hardware setting and software parameter [[SMO]] SM Bus address offset. The address of device is determined at the moment of logic voltage power on and will become by sum of hardware setting and SMO.

Hardware setting is set by connecting a resistor between ADDRSEL1 and GND by following table:
{| class="wikitable"
|-
! Hardware address setting !! Resistance !! Tolerance +/-
|-
| 1 || open circuit || 
|-
| 2 || 5.6 kOhm (or two 2.7 kOhm in series) || 5%
|-
| 3 || 2.7 kOhm (or two 5.6 kOhm wired in parallel) || 5%
|-
| 4 || 1.8 kOhm (or 5.6 kOhm and 2.7 kOhm wired in parallel) || 5%
|}
{{damage|Never connect ADDRSELn inputs directly to GND with lower than 1 kOhm impedance}}
Hardware address allows designing a motherboard like [[IONICUBE]] where each device has different address when SMO parameter is at it's default value (0).