N5 CANopen Online Manual

Digital outputs

Outputs

The outputs are controlled via object 60FEh. Here, output 1 corresponds to bit 16 in object 60FEh, output 2 corresponds to bit 17, etc., as with the inputs. The outputs with special functions are again entered in the firmware in the lower bits 0 to 15. The only bit assigned at the present time is bit 0, which controls the motor brake.

Wiring

Note: Always observe the maximum capacity of the output (see Pin assignment).

The outputs are implemented as "open drain". Hence, an external voltage supply is always necessary.

Example

The digital output signal should continue to be used. For this purpose, a circuit as shown in the following figure is to be realized.

With a supply voltage of +24 V, a resistance value Rexternal of 10 kΩ is recommended.

Example

A simple load is to be used with the digital output.

Object entries

Additional OD entries are available for manipulating the value of the outputs (see the following example for further information). As with the inputs, only the bit at the corresponding location acts on the respective output:

  • 3250h:01h: No function.

  • 3250h:02h: This is used to switch the logic from normally open to normally closed. Configured as normally open, the output outputs a logical high level if the bit is "1". With the normally closed configuration, a logical low level is output accordingly for a "1" in object 60FEh.

  • 3250h:03h: If a bit is set here, the output is controlled manually. The value for the output is then in object 3250h:4h; this is also possible for the brake output.

  • 3250h:04h: The bits in this object specify the output value that is to be applied at the output if manual control of the output is activated by means of object 3250h:03h.

  • 3250h:05h: The bit combination applied to the outputs is stored in this subindex.

  • 3250h:08h: For activating the Output Routing.

  • 3250h:09h: For switching control of the Power LED on/off. If bit 0 is set to "1", the green LED is activated (flashes in normal operation). If bit 1 is set to "1", the red LED is activated (flashes in case of an error). If the bit is set to "0", the respective LED remains off.

Computation of the outputs

Example for calculating the bits of the outputs:



Output Routing

Principle

The "Output Routing Mode" assigns an output a signal source; a control bit in object 60FEh:01h switches the signal on or off.

The source is selected with 3252h:01 to n in the "high byte" (bit 15 to bit 8). The assignment of a control bit from object 60FEh:01h is performed in the "low byte" (bit 7 to bit 0) of 3252h:01h to n (see following figure).

Activation

This mode is activated by setting object 3250h:08h (Routing Enable) to "1" .

Note: Entries 3250h:01h to 3250:04h then have no function until Output Routing is again switched off.

Routing

The subindex of object 3252h determines which signal source is routed to which output. The output assignments are listed in the following:

Subindex 3252h Output Pin
01h Configuration of the PWM output (software PWM)
02h Configuration of output 1
03h Configuration of output 2 (if available)
0nh Configuration of output n (if available)
Note: The maximum output frequency of the PWM output (software PWM) is 2 kHz. All other outputs can only produce signals up to 500 Hz.

Subindices 3252h:01h to 0nh are 16 bits wide, whereby the high byte selects the signal source (e. g., the PWM generator) and the low byte determines the control bit in object 60FEh:01.

Bit 7 of 3252h:01h to 0nh inverts the controller from object 60FEh:01. Normally, value "1" in object 60FEh:01h switches on the signal; if bit 7 is set, the value "0" switches on the signal.

Tip: To deactivate routing, enter the value FFFFh.
Number in 3252:01 to 0n
00XXh Output is always "1"
01XXh Output is always "0"
02XXh Encoder signal (6063h) with frequency divider 1
03XXh Encoder signal (6063h) with frequency divider 2
04XXh Encoder signal (6063h) with frequency divider 4
05XXh Encoder signal (6063h) with frequency divider 8
06XXh Encoder signal (6063h) with frequency divider 16
07XXh Encoder signal (6063h) with frequency divider 32
08XXh Encoder signal (6063h) with frequency divider 64
09XXh Position Actual Value (6064h) with frequency divider 1
0AXXh Position Actual Value (6064h) with frequency divider 2
0BXXh Position Actual Value (6064h) with frequency divider 4
0CXXh Position Actual Value (6064h) with frequency divider 8
0DXXh Position Actual Value (6064h) with frequency divider 16
0EXXh Position Actual Value (6064h) with frequency divider 32
0FXXh Position Actual Value (6064h) with frequency divider 64
10XXh PWM signal that is configured with object 2038h:05h and 06h
11XXh Inverted PWM signal that is configured with object 2038h:05h and 06h
Note:

On any change of the "encoder signal" (6063h) or the current position (6064h in user-defined units) by an increment, a pulse is output at the digital input (for frequency divider 1). Take this into account when selecting the frequency divider and the unit, especially when using sensors with low resolution (such as Hall sensors).

Example

The encoder signal (6063h) is to be applied to output 1 with a frequency divider 4. The output is to be controlled with bit 5 of object 60FE:01.

  • 3250h:08h = 1 (activate routing)
  • 3252h:02h = 0405h (04XXh + 0005h)
  • 04XXh: Encoder signal with frequency divider 4
  • 0005h: Selection of bit 5 of 60FE:01

The output is switched on by setting bit 5 in object 60FE:01.

Example

The brake PWM signal is to be applied to output 2. Because the automatic brake control uses bit 0 of 60FE:01h, this should be used as control bit.

  • 3250h:08h = 1 (activate routing)
  • 3252h:03h = 1080h (=10XXh + 0080h). Where:
    • 10XXh: Brake PWM signal
    • 0080h: Selection of the inverted bit 0 of object 60FE:01

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